Contraction Timer by Nestling — Terms of Service
Last updated: September 3, 2026
These terms govern your use of Contraction Timer by Nestling (also called Nestling Labor; the "App"), an iOS contraction timer published by Sparkwell Studios LLC ("we," "us," "our"). By installing or using the App, you agree to these terms. If you don't agree, don't use the App.
This is a separate agreement from the parent Nestling app's terms.
1. Not a medical device; not medical advice; no emergency detection
Nestling Labor ("the App") is a self-help contraction timing tool for informational purposes only. It is not a medical device, is not intended to diagnose, treat, cure, or prevent any condition, and does not provide medical advice. The App cannot and does not detect the onset of labor, complications, or any emergency. Timing patterns such as 5-1-1 are general informational references, not instructions or recommendations — they exist to help you communicate with your healthcare provider and do not replace clinical judgment. Never disregard professional medical advice or delay seeking it because of something in this App.
Contact your maternity care team whenever you are uncertain or concerned and follow the plan they gave you. For an emergency, use your local emergency service. Do not delay seeking care because of anything the App displays.
You assume all risk for any decision made while using the App. You acknowledge and agree that you use the App at your own risk and that we are not liable for any decisions you make based on App data.
2. Eligibility
You must be at least 13 years old to use the App. If you're under 18 in the U.S. (or under the age of majority in your country), use the App with the involvement of a parent or guardian.
3. Pricing — the App is free
The App is completely free. Every feature is included — unlimited contraction timing, full session history, CSV and PDF export, the Apple Watch app and Lock Screen Live Activity. There is no paywall, no advertising and no subscription, and nothing is offered for sale inside the App.
A one-time, non-consumable in-app purchase called Forever Unlockstill exists on the App's store listing, which is why Apple may display an In-App Purchases badge. It is not offered for sale anywhere in the App, and no feature depends on it.
- If you purchased Forever Unlock previously, your purchase remains valid with no expiration, on any device tied to that Apple ID. You are not disadvantaged: every feature it covered is now free for everyone.
- Restore Purchase in Settings still restores a prior Forever Unlock on a new device or after reinstall.
- Refunds are processed by Apple per Apple's App Store refund policy. We can't directly refund — request a refund through reportaproblem.apple.com.
4. Acceptable use
Don't:
- Reverse engineer, decompile, or extract source code from the App
- Use the App to harass, deceive, or harm anyone (e.g. fabricated labor data sent to a partner)
- Submit content via partner share that infringes anyone's rights
We may suspend access to features (e.g. partner share) for users we reasonably believe are violating these rules.
5. Partner share
The partner-share feature creates a temporary, revocable token. The person you share it with can view your contraction data in real time while your session is active and the token is valid (max 48 hours). You're responsible for who you share with.
Tokens are revocable from inside the App at any time. Revoking immediately stops new data from being visible to the watcher.
An hourly cleanup removes revoked or expired link records and live summaries that no longer have an active link. You may request earlier deletion through support@trynestling.com.
6. On-device storage
Version 1.0.17 stores new labor-session records with SwiftData on your device and does not access Apple Health. Deleting the App removes its local store; export anything you want to keep before deletion.
Versions released before 1.0.17 could sync records to the private CloudKit database associated with your Apple account. Updating or deleting the current App does not itself erase a legacy copy already held by Apple; manage that copy in your Apple Account's iCloud storage settings.
7. Cross-app handoff with Nestling
The "Baby Arrived" handoff offers to open the Nestling baby-tracker app via a Universal Link. If Nestling isn't installed, Safari opens trynestling.com/baby-arrived with an App Store install prompt. You can decline the handoff. Nestling is a separate app published by us under a separate agreement; if you install it, Nestling's terms apply to your use of that app.
8. Intellectual property
The App, its design, code, and content are owned by Sparkwell Studios LLC and licensed to you for personal, non-commercial use under these terms.
9. Disclaimer of warranties
The App is provided "as is" and "as available" without warranties of any kind, express or implied, including merchantability, fitness for a particular purpose, and non-infringement. We do not warrant that the App will be error-free or uninterrupted, nor that any data the App displays is accurate.
See Section 1 — Nestling Labor is not a medical device. Decisions about your labor must be made with a healthcare provider, not based solely on App output.
10. Limitation of liability
To the maximum extent permitted by law, we are not liable for any indirect, incidental, special, consequential, or punitive damages, or any loss of profits, data, use, or goodwill, arising from your use of (or inability to use) the App. Our total liability for any claim arising out of these terms or the App is limited to the amount you paid us for the App in the 12 months before the claim (i.e., at most the amount you actually paid us, which for almost all users is $0 because the App is free).
Some jurisdictions don't allow these limitations, so they may not apply to you in full.
11. Changes
We may update these terms occasionally. Material changes will be surfaced via the in-app notice on next launch and will update the "last updated" date.
12. Governing law
These terms are governed by the laws of the State of Texas, USA, without regard to conflict-of-law principles. Any dispute arising out of these terms shall be resolved in the state or federal courts located in Travis County, Texas.