These Terms of Service ("Terms") govern your use of the Shiver: Cold Shower Challenge iOS application (bundle identifier xyz.bogtsi.shiver) and any content or features it provides (the "App"). The App is provided by an individual developer based in Israel ("we", "us", or "our"). By downloading, accessing, or using the App, you agree to these Terms. If you do not agree, do not use the App.
Subject to your compliance with these Terms, we grant you a personal, limited, non-exclusive, non-transferable, revocable license to download and use the App on Apple devices that you own or control, for your own personal, non-commercial use. This license is granted under the terms of Apple's Licensed Application End User License Agreement (EULA), which applies to your use of the App as an application obtained through the App Store; where these Terms are silent, Apple's standard EULA governs.
You may not copy, modify, reverse-engineer, decompile, sublicense, sell, rent, or otherwise exploit the App or its content except as expressly permitted by these Terms or applicable law.
Shiver offers an optional auto-renewing subscription ("Shiver Pro") that unlocks additional features — including the full challenge-plan library, silent breathing prep, full stats, retro-logging, CSV export, unlimited timer presets, and optional Apple Health sync (write-only). Shiver remains fully usable without it: the 14-Day Starter plan, the timer, and your session log are free forever. Subscriptions and payments are handled by Apple through the App Store; we never receive or store your payment card details.
Subscription entitlements are managed through RevenueCat on our behalf. See our Privacy Policy for details on the data involved.
The App contains no advertising and no advertising SDK. If we enable advertising in a future update, this section and our Privacy Policy will be updated before it ships.
You agree not to:
Shiver is intended for general wellness purposes only — timing and logging cold-water exposure you choose to undertake, tracking a streak, and showing your own reported mood before and after. It is not a medical device. It is not intended to diagnose, treat, cure, or prevent any disease or medical condition, and it is not a substitute for professional medical advice, diagnosis, or treatment.
Cold-water exposure produces a real, involuntary "cold-shock response" — a gasp reflex, a spike in heart rate and blood pressure, and fast, shallow breathing in the first seconds of contact with cold water. For most healthy people this is brief and manageable; for some people and some conditions it is a genuine risk. Before your first session, review the safety information available in the App (the Safety tab and the first-run onboarding), including at minimum the following conditions, which mean you should talk to a doctor before doing any cold exposure at all, including a cold finish to a warm shower:
Stop a session immediately if you experience chest pain or pressure; dizziness, fainting, or your vision greying out; a racing, pounding, or irregular heartbeat; hives, welts, or swelling anywhere on your skin; numbness that outlasts the shower; breathing you cannot slow down; blue or grey fingers or lips; or shivering you cannot stop or confusion after you get out — and seek medical help if a symptom lingers or frightens you. Never combine breath-holding or hyperventilation breathwork with being in or near water; the App's optional breathing-prep feature is deliberately seated, on dry ground, before the shower, and is never run with the water on. Cold and duration figures the App displays (plan targets, timers, weekly totals) are targets you choose to attempt, not prescriptions, and must not be used to override your own body's stop signals.
The App and all of its content — including software, design, text, and graphics — are owned by us or our licensors and are protected by intellectual-property laws. Except for the limited license in Section 1, no rights are granted to you. "Shiver" and associated marks are our property.
The entries and settings you create in the App are stored on your device, not on a server we operate. You are responsible for keeping your own copies of anything you wish to preserve — Shiver Pro's CSV export exists for that purpose. Deleting the App, or using Clear all data in its settings, permanently removes that data from your device, and we cannot recover it for you.
The App relies on third-party services, including Apple (App Store) and RevenueCat. Your use of those services through the App may be subject to their own terms and policies. We are not responsible for the practices of these third parties.
The App is provided "as is" and "as available", without warranties of any kind, whether express, implied, or statutory, including implied warranties of merchantability, fitness for a particular purpose, title, and non-infringement. We do not warrant that the App will be uninterrupted, error-free, secure, that any timer or figure it displays will be accurate, or that any defects will be corrected. You use the App, and undertake any cold exposure you choose to do with its help, entirely at your own risk, to the maximum extent permitted by applicable law.
To the maximum extent permitted by applicable law, in no event will we be liable for any indirect, incidental, special, consequential, exemplary, or punitive damages, or for any loss of data, profits, goodwill, or other intangible losses, or for any personal injury, arising out of or relating to your use of (or inability to use) the App or any cold-water exposure you undertake, even if we have been advised of the possibility of such damages. To the maximum extent permitted by law, our total aggregate liability for any claim arising out of or relating to the App or these Terms will not exceed the greater of the amount you paid us for the App in the twelve (12) months preceding the claim, or ten U.S. dollars (US$10).
Some jurisdictions do not allow certain limitations, so some of the above may not apply to you; in that case, our liability is limited to the smallest extent permitted by law.
You agree to indemnify and hold us harmless from any claims, damages, liabilities, and expenses (including reasonable legal fees) arising from your misuse of the App or your violation of these Terms or of applicable law.
These Terms are between you and us only, not with Apple. Apple is not responsible for the App or its content. Apple has no obligation to provide maintenance or support for the App. In the event of any failure of the App to conform to any applicable warranty, you may notify Apple, and Apple may refund the purchase price (if any); to the maximum extent permitted by law, Apple has no other warranty obligation with respect to the App. Apple and its subsidiaries are third-party beneficiaries of these Terms and may enforce them against you.
These Terms remain in effect while you use the App. We may suspend or terminate your access if you violate these Terms. You may stop using the App at any time by deleting it. Sections that by their nature should survive termination (including intellectual property, disclaimers, limitation of liability, and governing law) survive.
These Terms are governed by and construed in accordance with the laws of the State of Israel, without regard to its conflict-of-laws rules. Subject to any mandatory consumer-protection rights available to you under the law of your country of residence, you agree that the competent courts located in Israel will have exclusive jurisdiction over any dispute arising out of or relating to these Terms or the App.
We may update these Terms from time to time. When we do, we will revise the "Last updated" date above and post the new version at this URL. Your continued use of the App after changes take effect constitutes acceptance of the revised Terms. If you do not agree to the changes, stop using the App.
Questions about these Terms? Email bogdan.tsiganiyk@gmail.com.