Privacy Policy

Last updated August 3, 2026

Apsis is an offline-first training and nutrition tracker. Everything you log stays on your device. This page explains, plainly, what data the app touches and the few limited cases where the app talks to an outside service.

Your training and nutrition data stays on your device

Every workout you log — lifting sets, runs, heart rate, bodyweight, distances, durations, and your computed Hybrid Stress Score (HSS) — and everything you log in nutrition — foods, quantities, calories, macros, and your daily targets — is stored locally on your iPhone in a local database. None of it is ever transmitted to us or to any third party. There are no accounts, no sign-in, and no server that your logged data is sent to. Core logging works fully offline, the same with or without an internet connection.

Food lookups (barcode scanning and online food search)

When you scan a product barcode or search for a food that isn't already on your device, Apsis looks it up in public food databases — Open Food Facts and the U.S. Department of Agriculture's FoodData Central. To do this, the app sends only the scanned barcode number or the words you typed in the search box to those services so they can return matching nutrition facts. It never sends your identity, your logged foods, your diary, or any health or training data, and there is no account tied to these lookups. These lookups need an internet connection; if you're offline, or a product isn't found, you can always enter the food manually. Results you choose to log are saved to your on-device database so repeat logging works offline.

Share cards and photos

Apsis can create a shareable image summarizing a workout — your Hybrid Stress Score and a few key stats, styled as a branded card. Adding a background photo to that card is entirely optional and the feature works fully without it. If you choose to add one, Apsis reads a single photo you pick from your photo library (the app asks for this permission only when you tap to add a photo) and composes the share image — your photo plus your stats — entirely on your device. Neither the photo you picked nor the composed image is ever transmitted by Apsis. The image only leaves your device if you choose to share it, using the standard iOS share sheet, which you control — you decide whether to send it, and to whom or which app.

Apple Health (HealthKit)

If you choose to connect Apple Health, Apsis reads workouts, heart rate, and bodyweight samples from HealthKit, and can write your logged workouts back to HealthKit, entirely on-device using Apple's HealthKit framework. This exchange happens only between Apsis and HealthKit on your phone — none of this health data is transmitted off your device by Apsis. Connecting Apple Health is completely optional: you can skip it during setup and connect (or disconnect) it later from Settings at any time without losing any functionality.

Anonymous crash diagnostics

Apsis uses Sentry, a crash-reporting service, to help us find and fix bugs. If the app crashes or hits an unhandled error, a small, anonymous crash diagnostics report is sent to Sentry. That report is limited to: the error type and message, the code stack trace, your device and iOS model, and the app version. It never includes any personal information and never includes any health or training values — no heart rate, no bodyweight, no HSS, no distances, no durations, and nothing that identifies you personally. This crash diagnostics data cannot be linked back to you as an individual.

No tracking, no ads

Changes to this policy

If Apsis's data practices change, this page will be updated and the "Last updated" date above will reflect the change.

Contact

Questions about this policy? Email support@apsistraining.com.