The iOS app has no accounts and no servers; your workout data stays on your device and in your own Apple account. We capture a small set of anonymized usage events (no PII, no advertising IDs) so we can see whether the program is actually helping. The website uses cookieless analytics. The long version is below.
On-device data. Your workout history, program progress, settings, and preferences are stored locally on your device using SwiftData, Apple's local database framework. If you have iCloud enabled, SwiftData syncs this data across your own Apple devices using CloudKit. The sync runs inside your Apple account. sprntr never reads it and has no backup or copy of it.
Apple Health. If you grant permission, sprntr writes sprint workouts to Apple Health so they appear alongside your other activity, and reads workout history to avoid creating duplicates. This data stays in your Health database. sprntr does not transmit any Health data to third parties. You can revoke access at any time in iOS Settings → Privacy & Security → Health → sprntr.
Subscription status. Subscription purchases are handled by Apple's App Store. The App Store shares anonymized entitlement state with sprntr so the app knows whether to unlock Week 3+ content. sprntr does not see your payment method, your Apple ID, or your transaction history, only whether a premium entitlement is currently active.
Local notifications. If you enable workout reminders, sprntr schedules them directly on your device through iOS. No reminder data leaves your device.
Anonymized usage events. sprntr captures a small set of anonymized events so we can see whether the program is actually helping people stick to it. They include things like onboarding completion, training-location preference, workout started / completed / abandoned, warm-up skipped, time trial logged, paywall viewed, subscription purchase started / completed, feel-rating selection, and program reset, plus standard iOS lifecycle events (app open, install, update). Each event includes the event name plus minimal context: iOS version, device model, app version, and a random per-install identifier (no Apple ID, no name, no email, no GPS location). Workout events also include aggregated session metrics (week and day number, session type, reps completed, reps skipped, total sprint volume in meters, session duration, and your perceived-effort rating), but the rep-by-rep splits and individual sprint times that drive your progress charts stay on your device. Your IP address is sent to PostHog to derive an approximate country/region and is then handled per their privacy policy. The data is processed by PostHog in the United States (posthog.com/privacy).
Apple. sprntr uses HealthKit, iCloud, CloudKit, App Store, and StoreKit as a regular end user of Apple's developer platform. Your relationship with Apple is governed by Apple's own privacy policy.
RevenueCat. When subscription handling is active, RevenueCat validates App Store receipts on our behalf. RevenueCat sees only the anonymous App Store transaction identifier, not your name, email, or payment information. Their privacy policy is available at revenuecat.com/privacy.
This website. sprntr.app is served as static files and uses four third-party services. Plausible Analytics records aggregate pageview counts: no cookies are set, no personal data is collected, and no tracking is performed across other sites. Plausible briefly processes your IP address to approximate country and to deduplicate visitors, then discards it (policy at plausible.io/data-policy). PostHog captures a small set of conversion events (e.g. email signup) in cookieless in-memory mode: no cookies, no localStorage, no cross-page or cross-device tracking. The data is processed by PostHog in the United States (posthog.com/privacy). Google Fonts serves the web typography, which means your IP address is visible to Google when you load a page. Buttondown stores your email address if you sign up for the sprntr list (buttondown.com), so we can email you at launch. You can unsubscribe at any time from any email we send.
Because your workout data lives on your device and in your own iCloud, there is no sprntr account for us to delete. To remove your data:
EU/UK and California residents. Depending on where you live, you may have rights to access, correct, export, or delete your personal data, to object to or restrict its processing, and (in California) not to receive discriminatory treatment for exercising those rights. Because your workout history, progress, and settings live only on your device and in your own iCloud, you already hold and control that data directly — the removal steps above accomplish access and erasure without involving us. For the limited data we do process — anonymous product-analytics events (not linked to your identity) and, if you join the newsletter, your email address — email support@sprntr.app and we will action any valid request. We do not sell your personal information, and we do not use it for cross-app or cross-site advertising.
sprntr is not directed at children under 13, and we do not knowingly collect data from children. If you believe a child has provided personal information through sprntr or the newsletter, contact us and we will remove it.
If this policy changes, we will post the update here with a new effective date. Material changes will be reflected in the app.
Questions about this policy: support@sprntr.app.
Effective 2026-05-29