The short version
This box is a summary. The full Terms below are the agreement.
1.1. These Terms of Service ("Terms") are an agreement between you and Connor Matthew Otto, an individual who makes and runs the Rhythm Fit app ("Rhythm", "we", "us" or "our"). Rhythm is not a company. When these Terms say "we", they mean Connor Otto.
1.2. These Terms cover the Rhythm Fit app for iPhone, the Rhythm Fit app for Apple Watch, the web pages at rhythmfit.app and its sub-sites, and the routine share links (together, the "Service").
1.3. You agree to these Terms when you create an account or use the Service. If you do not agree, do not use the Service.
1.4. If Connor forms a company to run Rhythm, he may transfer this agreement to that company (see section 21.4). We will tell you if this happens, and we will update section 1.1.
1.5. Contact: team@rhythmfit.app · 7864 Camino Huerta, San Diego, CA 92122 · (818) 584-9488.
2.1. Age. You must be at least 18 years old to use Rhythm. Rhythm is not for children or teenagers. We do not knowingly collect data from anyone under 18.
2.2. Where. Rhythm is offered only in the United States.
2.3. Your account. Give true information when you sign up. Keep your password and your devices secure. Tell us at team@rhythmfit.app if you think someone else is using your account. You are responsible for what happens in your account, unless it happens because of our own failure to keep it secure.
2.4. One person per account. Your account is for you. Do not share it or sell it.
3.1. Rhythm helps you plan and log workouts and gives you general fitness and wellness information. Rhythm does not diagnose, treat, cure or prevent any disease or medical condition. It is not a medical device. It does not give medical advice. Nothing in Rhythm replaces a doctor, a nurse, a physical therapist, a dietitian or another qualified health professional.
3.2. Talk to your doctor before you start a new exercise program, and before you change your diet or take a supplement. This is most important if you:
3.3. Stop exercising and get help if you feel pain, dizziness, faintness, chest pain or pressure, a very fast or irregular heartbeat, unusual shortness of breath, or anything that worries you. During pregnancy or after birth, also stop and call your provider if you have bleeding, fluid leaking, contractions, calf pain or swelling, or a headache that does not go away. Rhythm cannot see you or know how you feel.
3.4. Emergencies. Rhythm is not for emergencies. If you think you have a medical emergency, call 911.
3.5. Some screens in Rhythm name conditions such as PCOS, perimenopause, pregnancy or postpartum recovery. That information is general. It is not about you, and it is not a diagnosis. Your own provider's advice comes first. When Rhythm uses a cautious limit (for example on suggested weights during pregnancy or after birth), that limit is Rhythm's own cautious default. It is not a limit your provider has set.
Please read this section carefully. It limits your right to make some claims against us.
4.1. Exercise can cause injury. Lifting weights, cardio and other exercise carry risks that no app can remove. These include pulled muscles, joint and back injury, falls, dropped weights, heat illness, heart problems and, rarely, death. These risks exist even when you use good form and follow every suggestion.
4.2. Suggestions are suggestions. Rhythm suggests weights, reps, sets, rest times and how hard a day might be. These suggestions come from what you log, from general rules, and (if you connect them) from your wearables. They can be wrong. They cannot account for how you feel today, your form, your equipment or where you train. You decide what to lift and how hard to train. Use a weight you can control. Use a spotter or safety equipment when you need it. If a suggestion feels wrong for you, do less.
4.3. You accept these risks. By using Rhythm to plan or do exercise, you accept the risks in section 4.1 as your own.
4.4. Release. To the fullest extent the law of your state allows, you release Connor Otto from claims for injury, illness or damage that come from your exercise or from following or not following a suggestion in Rhythm, including claims based on our ordinary negligence. This release does not cover harm caused by our gross negligence, our willful misconduct or our fraud. It does not apply where the law does not allow it (see section 17.4).
5.1. Cycle tracking in Rhythm is optional. When you turn it on, Rhythm estimates your cycle phase and gives training context. These are estimates. They can be wrong, especially if your cycle is irregular, you use hormonal birth control, you are pregnant or postpartum, you are in perimenopause, or your data is missing.
5.2. Rhythm is not birth control. Do not use Rhythm to avoid pregnancy or to plan a pregnancy. Rhythm cannot tell you when you can or cannot get pregnant. Any "ovulatory window" or temperature-rise note in Rhythm is training context only.
5.3. Rhythm does not diagnose cycle or hormone conditions. If your periods change, stop, become very painful or very heavy, or if something worries you, talk to your provider.
5.4. Your cycle dates, cycle phase and daily cycle check-ins stay on your iPhone. We never store them on our servers. Because of this, we cannot recover them for you. If you lose your phone, set up a new phone, or delete your account, your cycle history may be lost. The Privacy Policy explains the details, including the copy that stays in your iPhone's Keychain.
6.1. Rhythm can read data from Apple Health, an Apple Watch, an Oura ring, a Whoop band and a Bluetooth heart-rate strap. These devices and services measure things like heart rate, heart-rate variability, sleep and skin temperature. Their readings can be missing, late or wrong.
6.2. Rhythm turns these readings into plain-language context. That context is only as good as the data behind it, and it is not a medical measurement. Do not use Rhythm or your wearable data to make medical decisions.
7.1. What you may do. We give you a personal, limited, non-exclusive, non-transferable, revocable license to download and use the Rhythm app on Apple-branded products that you own or control, for your own non-commercial use, as these Terms and the Apple Media Services Terms allow. This includes the Apple Watch app.
7.2. What you may not do. You may not:
7.3. What we keep. Rhythm, including its software, design, text, exercise library, animations and names, belongs to Connor Otto or to the people who license it to him. These Terms do not give you ownership of any of it. Apple Health, Apple Watch, Oura and Whoop are trademarks of their owners.
7.4. Apple's Standard License. If you downloaded Rhythm from the App Store, Apple's Licensed Application End User License Agreement (the "Standard EULA", at https://www.apple.com/legal/internet-services/itunes/dev/stdeula/) also applies. These Terms add to the Standard EULA. If the two conflict, these Terms control between you and us. Apple's rights in section 20 still apply.
7.5. Updates. We may update the app, including by automatic updates. Some features may change or stop. We do not promise that the app will work on every device or iOS version.
8.1. Free and Pro. You can use Rhythm for free. Some features and limits need a paid subscription, Rhythm Pro. The purchase screen in the app shows what Pro includes before you buy. If the purchase screen and these Terms disagree about what Pro includes, the purchase screen controls.
8.2. Apple handles payment. You buy Rhythm Pro through Apple's App Store with your Apple Account. Apple charges you, not us. We never see your card details. Your purchase is also covered by the Apple Media Services Terms (https://www.apple.com/legal/internet-services/itunes/us/terms.html).
8.3. Price and length. Before you buy, the purchase screen and Apple's payment sheet show each plan's price, how often you are charged (for example every month or every year), and any free trial.
8.4. Automatic renewal. Rhythm Pro renews automatically at the end of each period, at the price then in effect, and Apple charges your Apple Account, until you cancel. Apple charges you within the 24 hours before the new period starts.
8.5. Free trials. If a plan offers a free trial, the purchase screen shows how long it lasts and the price after it. When the trial ends, your paid subscription starts and Apple charges you, unless you cancel at least 24 hours before the trial ends. A free trial is for new subscribers. Apple decides who is eligible.
8.6. How to cancel. You can cancel at any time. On your iPhone: open Settings → tap your name → Subscriptions → Rhythm Fit → Cancel Subscription. If you have Rhythm Pro, the app also links to this screen (in Rhythm: Settings → Manage Subscription). When you cancel, Pro stays on until the end of the period you already paid for. Then it stops, and Apple does not charge you again.
8.7. Deleting your account does not cancel your subscription. Apple bills you, not us. Cancel in your iPhone Settings first.
8.8. Refunds. All refunds for purchases through the App Store are decided by Apple, under Apple's rules. We cannot give refunds ourselves. To ask for one, go to reportaproblem.apple.com, sign in, choose "Request a refund", and follow the steps. If a problem with Rhythm is the reason, please also tell us at team@rhythmfit.app so we can fix it.
8.9. Price changes. If we raise the price of Rhythm Pro, Apple tells you before the new price applies and, when Apple's rules or the law require it, asks you to agree. If you do not agree, your subscription ends at the end of the current period.
8.10. When Pro ends. Your account goes back to the free plan. We do not delete your data because Pro ended. Pro features stop, and the free plan's limits apply again.
8.11. Restore. If you reinstall the app or get a new phone, tap "Restore Purchases" in the app to link your subscription again.
9.1. What you create. Your content means what you put into Rhythm: workouts, sets, notes, routines, goals, custom exercises, body measurements, and the name you use. You own your content.
9.2. Our permission to use it. You give us permission to store, copy, process and show your content only to run the Service for you: for example, to save your workouts, sync them to your devices, make suggestions, and make your data export. If you say yes to usage data, we also use limited usage information to understand how Rhythm is used, as the Privacy Policy explains. This permission ends when you delete the content or your account, except for copies we must keep by law or that are in backups until they expire (see the Privacy Policy).
9.3. Sharing a routine. When you share a routine by link:
9.4. Stopping a share. You can stop a share link at any time in the app. After you stop it, nobody new can open or copy it. Copies that people already made stay with them. Deleting your account also stops all your share links.
9.5. Do not put private information in a shared routine. A routine's name and exercise names can be seen by anyone with the link. Do not put health details, cycle details, your full name, contact details or other private information in them.
9.6. Your promises about your content. You promise that you have the right to share what you share, and that it does not break these Terms or the law.
9.7. Removing content. We may stop a share link or remove content that breaks these Terms or the law, or that someone reports to us with good reason. To report a shared routine, email team@rhythmfit.app with the link and the reason.
When you use the Service, do not:
If you send us ideas or feedback, we may use them to improve Rhythm without paying you. You keep any rights you have in what you wrote; you give us a non-exclusive, free, permanent permission to use it. Nothing in these Terms stops you from writing an honest review of Rhythm anywhere.
12.1. Rhythm can connect to services run by other companies: Apple (Apple Health, Apple Watch, Sign in with Apple, the App Store), Oura, and Whoop. These connections are optional. You choose what to connect and what to allow, and you can disconnect at any time (in Rhythm under Settings → Wearables & Live Data, in the Oura or Whoop app, or in your iPhone's Health settings).
12.2. When you use those services, their own terms and privacy policies also apply. You agree to follow them. We do not control those services, and we are not responsible for what they do, for their data, or for when they change or stop.
12.3. To the fullest extent the law allows, these third-party service providers (including Apple, Oura and Whoop) give you no warranty through Rhythm, including no implied warranty of merchantability, fitness for a particular purpose or non-infringement, and they are not liable to you through Rhythm for any indirect, incidental, special, consequential or punitive damages.
12.4. Rhythm is not made, approved or endorsed by Apple, Oura or Whoop.
12.5. What Rhythm does with Whoop data. Rhythm does not display Whoop's own Recovery, Day Strain or Sleep Performance scores anywhere in the app. It uses Whoop's daily and workout intensity values only inside its own training-load math and never shows them to you.
13.1. Our Privacy Policy at https://privacy.rhythmfit.app explains what data Rhythm keeps, where it keeps it, who helps us run the Service, and your choices. Please read it. It is part of how we handle your data, and we follow it. Our Consumer Health Data Privacy Policy at https://privacy.rhythmfit.app/health-data/ explains how we handle health data under Washington and Nevada law.
13.2. In short: we do not sell your data, and we do not use it for ads. Your cycle dates, cycle phase and cycle check-ins stay on your iPhone and are never stored on our servers. Usage data goes to our analytics provider only if you say yes.
14.1. You can stop at any time. You can stop using Rhythm at any time. You can delete your account in the app (Settings → Legal & Data → Delete Account). The Privacy Policy explains what deletion removes and how long backup copies last. Before you delete, you can export your data (Settings → Legal & Data → Export My Data). Remember to cancel Rhythm Pro in your iPhone Settings (section 8.7).
14.2. When we may suspend or close an account. We may suspend or close your account, or stop your share links, if:
Where it is safe and legal, we will tell you why and give you a chance to respond or to export your data.
14.3. If we shut Rhythm down. If we stop running the Service, we will try to tell you at least 30 days before, in the app and by email, so you can export your data. If you paid for a period that has not ended, you can ask Apple for a refund of the unused part (section 8.8).
14.4. What stays after the end. When these Terms end, your license to use the app ends. These sections stay in effect: 3, 4, 5, 6, 9.3 (for copies other people already made), 11, 12.3, and 16 to 21.
15.1. Changes to the Service. We improve and change Rhythm often. Features may be added, changed or removed.
15.2. Changes to these Terms. We may change these Terms. Each version has a version number and an effective date at the top.
15.3. A change to these Terms does not apply to a dispute that you told us about, or that started, before the change took effect.
Please read this section carefully.
16.1. We work hard to make Rhythm useful and reliable. But the Service is provided "as is" and "as available." To the fullest extent the law allows, we make no warranties, express or implied, including any implied warranty of merchantability, fitness for a particular purpose, title or non-infringement.
16.2. In particular, we do not promise that:
16.3. Keep your own copy of anything that is important to you. The in-app export (Settings → Legal & Data → Export My Data) can help. It does not include cycle data.
Please read this section carefully. It limits the amount you can recover from us.
17.1. Types of loss. To the fullest extent the law allows, we are not liable for any indirect, incidental, special, consequential, exemplary or punitive damages, or for loss of profits, data, goodwill or use, even if we were told these losses were possible.
17.2. Maximum amount. To the fullest extent the law allows, our total liability to you for all claims about the Service or these Terms is limited to the greater of (a) the total amount you paid for Rhythm Pro in the 12 months before the event that caused the claim, or (b) US $100.
17.3. What this section does not limit. Sections 4.4, 16 and 17 do not limit our liability for:
17.4. Your state's law. Some states do not allow some of the limits, exclusions or releases in sections 4.4, 16 and 17. For example, some states do not allow a release of claims for personal injury caused by negligence. If you live in such a state, those limits apply to you only as far as your state's law allows. These Terms do not take away any right that you have under consumer protection or other laws and that cannot be waived by contract.
If someone else makes a legal claim against us because (a) you shared content that you did not have the right to share, (b) you broke the law, or (c) you broke section 10 on purpose, you agree to cover our reasonable costs of that claim, including reasonable lawyers' fees, as far as the law allows. We will tell you about the claim promptly, and you may take part in the defense. This section does not apply to claims about your own injury, or to anything we caused.
19.1. Talk to us first. Most problems can be fixed quickly. Before you start a legal claim, email team@rhythmfit.app with your name, the email address on your account, what happened, and what you would like us to do. We will reply and try to fix it with you. If we cannot fix it within 30 days after you write to us, either of us may go to court as this section says. We will do the same before we start a claim against you. This step does not stop you from contacting a government agency, and it does not delay a claim that must be filed urgently to keep it within a legal time limit.
19.2. Small claims court. Either of us may bring a claim in small claims court, if it qualifies, in the county where you live or in the county where Connor Otto lives.
19.3. Other courts. Any other claim must be brought in the state or federal courts located in the State of California, and you and we agree to those courts' jurisdiction. But if the law of the state where you live gives you the right to bring a consumer claim in a court where you live, you keep that right.
19.4. No arbitration. These Terms do not require arbitration. This replaces the arbitration clause in the earlier Terms.
19.5. Governing law. These Terms, and any dispute about them or the Service, are governed by the laws of the State of California and applicable US federal law, without regard to conflict-of-law rules. This does not take away the protection of consumer laws of the state where you live that cannot be changed by contract.
These terms apply because you downloaded Rhythm from Apple's App Store.
20.1. These Terms are between you and Connor Otto only, not with Apple. Connor Otto, not Apple, is solely responsible for Rhythm and its content.
20.2. Your license to use Rhythm is limited to a non-transferable license to use it on Apple-branded products that you own or control, as allowed by the usage rules in the Apple Media Services Terms. Rhythm may be accessed and used by other accounts linked to you through Family Sharing or volume purchasing, if Apple's rules allow it for this app.
20.3. Connor Otto, not Apple, is solely responsible for maintenance and support of Rhythm. Apple has no obligation to provide any maintenance or support for Rhythm.
20.4. Connor Otto is responsible for any product warranties, whether express or implied by law, to the extent they are not effectively disclaimed. If Rhythm fails to conform to any applicable warranty, you may notify Apple, and Apple will refund the purchase price (if any) of Rhythm to you. To the maximum extent the law allows, Apple has no other warranty obligation at all with respect to Rhythm. Any other claims, losses, liabilities, damages, costs or expenses caused by any failure to conform to a warranty are Connor Otto's responsibility, as far as these Terms allow.
20.5. Connor Otto, not Apple, is responsible for addressing any claims by you or any third party relating to Rhythm or your possession or use of it, including: (a) product liability claims; (b) any claim that Rhythm fails to conform to any applicable legal or regulatory requirement; and (c) claims arising under consumer protection, privacy or similar laws, including in connection with Rhythm's use of the HealthKit framework.
20.6. If a third party claims that Rhythm or your possession and use of it infringes that third party's intellectual property rights, Connor Otto, not Apple, is solely responsible for the investigation, defense, settlement and discharge of that claim.
20.7. You represent and warrant that (a) you are not located in a country that is subject to a US Government embargo or that the US Government has designated as a "terrorist supporting" country, and (b) you are not listed on any US Government list of prohibited or restricted parties.
20.8. Questions, complaints or claims about Rhythm go to Connor Otto at the contact details in section 1.5.
20.9. You must follow any applicable third-party terms when you use Rhythm (for example, your wireless carrier's terms and the terms in section 12).
20.10. Apple and Apple's subsidiaries are third-party beneficiaries of these Terms. When you accept these Terms, Apple will have the right (and will be deemed to have accepted the right) to enforce these Terms against you as a third-party beneficiary.
21.1. The whole agreement. These Terms, the Privacy Policy, and (where section 7.4 says so) Apple's Standard EULA are the whole agreement between you and us about the Service. They replace any earlier Terms.
21.2. If a part is not valid. If a court finds a part of these Terms invalid or not enforceable, that part is limited or removed only as far as needed, and the rest of the Terms stay in effect.
21.3. No waiver. If we do not enforce a part of these Terms right away, we can still enforce it later.
21.4. Transfer. You may not transfer these Terms or your account to someone else. We may transfer these Terms to a company that Connor Otto forms or controls to run Rhythm, or to a company that takes over Rhythm, if that company agrees to be bound by these Terms and the Privacy Policy. We will tell you before or when this happens.
21.5. Things outside our control. We are not responsible for a delay or failure caused by events we cannot reasonably control, such as outages at Apple, Oura, Whoop or our hosting providers, internet failures, natural disasters, or government action.
21.6. Notices. We may send you notices in the app or to the email address on your account. You can send notices to team@rhythmfit.app or to 7864 Camino Huerta, San Diego, CA 92122.
21.7. Headings and examples. Headings and the "short version" box are for easy reading. They do not change the meaning of these Terms. "Including" and "for example" mean "including, but not limited to".
Under California Civil Code §1789.3, California users have the right to this information:
Questions about these Terms, a problem, or a report about a shared routine: team@rhythmfit.app · 7864 Camino Huerta, San Diego, CA 92122 · (818) 584-9488