Uphill Privacy Policy

Last updated: July 31, 2026

Uphill is a treadmill workout companion app. This policy explains what data Uphill handles and — more importantly — what it never does with that data.

The short version

What Uphill does send is anonymous diagnostics and usage events. If the app crashes, a report describing the error (plus your device model, OS version and app version) goes to Google Firebase Crashlytics so the bug can be fixed. Uphill also records anonymous usage events — which screens you open and which features you use, such as "a workout was saved" — so we can see where the app is confusing and fix it. These events record that something happened, never how much: your calories, distance, elevation, floors and workout duration are never sent. Neither is tied to your identity. Uphill also fetches configuration values (such as calculation settings) from Firebase Remote Config; that request sends no personal data.

What data Uphill stores

Uphill stores the following data only on your device:

• Body profile — your weight (required), and optionally your height, sex and age. These are health-related data you enter yourself.
• Workout records — for each workout you save: date and time, elapsed time, distance, calories, elevation gain and floors climbed.
• App settings — your unit preference (metric/imperial) and similar non-personal app options.

Uphill does not access your contacts, location, camera, microphone, photos, or any other data on your device. Uphill does not read from or write to Apple HealthKit or any health platform.

What Uphill sends off your device

Some data does leave your phone, and none of it is your health data:

• Crash diagnostics — when the app crashes or hits an unexpected error, Uphill sends a report to Google Firebase Crashlytics: the error and where in the code it happened, your device model, OS version, app version and a randomly generated installation identifier. This exists so crashes can be found and fixed. It is not linked to your identity, and it never contains your weight, height, sex, age or workout records.
• Usage events — Uphill sends anonymous events to Google Firebase Analytics describing what happened in the app: which screen you opened, that you finished onboarding, that you started or saved a workout, that you used a preset, changed units or opened support. Each event carries only the fact that it happened plus, in some cases, a fixed label chosen by the app (for example which preset was tapped, or whether a workout was your first). Alongside these, Firebase records your device model, OS and app version, and a randomly generated app-instance identifier.

  What these events never contain: your calories, distance, elevation gain, floors climbed, workout duration, or any part of your body profile. The app is built so that numbers like these cannot be attached to an event — event values are limited to yes/no flags and fixed labels, and this restriction is enforced by automated tests.

• Configuration fetch — Uphill asks Firebase Remote Config for settings values (for example calculation constants and display timings). This is a download; no personal data is uploaded with it.

All three are processed by Google as our service provider. See Google's privacy policy at https://policies.google.com/privacy. Uphill still has no servers of its own, no user accounts, no advertising and no advertising trackers, and it does not sell or share your data with anyone. Uphill does not collect advertising identifiers and does not use any of this data to track you across apps or websites.

Why Uphill stores it

• Your body profile is used for exactly one thing: estimating the calories you burn during a workout (weight is required for this; height, sex and age only refine the estimate and are optional).
• Your workout records exist so you can review your history and cumulative progress.

Uphill collects the minimum needed for these features and nothing else.

Where the data lives

All data is saved in an encrypted database on your phone. The encryption key is generated on your device and kept in your device's secure storage (Keychain on iOS, Keystore on Android). No other app can read it.

What Uphill never does

• Uphill never transmits your profile or workout data off your device.
• Uphill has no server of its own and no user accounts.
• Uphill never sends the numbers from your workouts — calories, distance, elevation, floors and duration stay on your phone even though usage events are sent.
• Uphill contains no ads and no advertising or behavioural trackers, and it does not build a profile of you. The only external services it uses are crash diagnostics, anonymous usage analytics and configuration fetch, described above.
• Uphill works fully offline — every core feature (profile, workouts, calculations, history, statistics) works with no network connection.

You are in control

At any time, inside the app, you can:

• View and edit your profile (Settings → Your profile).
• Delete any single workout, or delete all workouts (Settings → Data).
• Reset your profile (Settings → Data).

Because your profile and workouts live only on your phone, uninstalling Uphill permanently removes all of them. (This also means Uphill cannot recover your data if you lose your phone — there is no copy anywhere else.)

Crash diagnostics are retained by Firebase Crashlytics for up to 90 days and are then deleted automatically. Usage events are retained by Firebase Analytics for up to 2 months and are then deleted automatically. Neither contains health data or your workout numbers.

Age

Uphill is intended for adults aged 18 and over.

Not medical advice

Uphill's numbers (calories, distance, elevation, floors) are estimates based on your manual input, with a typical margin of ±10–20%. Uphill is not a medical device and does not provide medical, diagnostic or health advice. For health decisions, consult a qualified professional.

Changes to this policy

If this policy changes, the updated version will be posted at this same address with a new "Last updated" date.

Change on July 31, 2026: Uphill added anonymous crash diagnostics, anonymous usage analytics and remote configuration (all described above). Your body profile and workout records — including calories, distance, elevation, floors and duration — are still never sent anywhere. That has not changed.

Contact

Questions about this policy: android.kangzerg@gmail.com