iOS sometimes caches an old permission state. Force-quit the app (swipe up from the App Switcher) and reopen. If that doesn't fix it: iOS Settings → Privacy & Security → [the permission] → make sure "All Sensors" is set to your intended value.
Yes. iOS Settings → Privacy & Security → [permission] → All Sensors → toggle. Or: iOS Settings → All Sensors → re-enable any permission listed there.
A given permission only prompts the first time the app actually uses that capability. To re-trigger: delete the app and reinstall, then walk through the permission onboarding flow again.
Open any sensor's detail screen (tap a sensor card on the dashboard) and tap the gradient banner that says "Show-Off Mode" at the top.
It doesn't. Each sensor remembers its own selected variant for the duration of the session. Swipe back and the variant you last picked is still active.
On iPad, Show-Off Mode scales the visualization up to fill the screen (in both portrait and landscape), so it commands the larger display while keeping the design's proportions.
Logger tab (record icon) → tap "Start Log Session for all sensors" on the dashboard, or open Logger Settings to pick specific sensors and per-sensor sample rates.
Sessions are stored as a SQLite database under your app's Documents/Logging/ folder. You can export to CSV (one file per sensor) or JSON (a single file with all samples).
iOS can throttle background sensor work to save battery. The app shows a banner when this happens. To minimize throttling: keep the app in the foreground while recording, plug into power, and disable Low Power Mode.
A 1-minute recording of all 21 sensors at maximum rate is ~2 MB. A 1-hour recording at default rates (10 Hz for IMU, 1 Hz for slow sensors) is ~30 MB. Storage is your device's storage; the app does not upload anything.
HealthKit returns the same empty result when access is off and when the Health store has no matching samples. Open iOS Settings → Privacy & Security → Health → All Sensors to confirm read access, then try moving around with your phone or check that your Apple Watch is syncing if that is your data source.
No. The app requests HealthKit read access only. It does not write workouts, samples, or any other data back to HealthKit.
Add via Shortcuts app → Add Action → search "All Sensors". Or just say "Hey Siri, get the accelerometer reading" once you've added it.
The app does not collect, transmit, or share any of your data. See the full privacy policy. The only outbound network call is a connectivity test you initiate yourself in the Network sensor.
If you hit a different issue, please email contact@1moby.com — I'll fix it in 1.0.1.
I built All Sensors because I was teaching myself iOS sensor APIs and couldn't find a single app that exposed them all in one place, honestly, with no marketing fluff. If it's useful to you too, that's great. If something's missing or wrong, write me and I'll fix it. — Anu