Support · v1.1

Need a hand with Internal GPS Info?

Internal GPS Info turns your iPhone's own GPS and motion sensors into a performance toolkit — live data, acceleration and braking timers, lap timing, run recording with analytics, and saved locations. No external hardware. Most questions come down to granting location access and getting a clear view of the sky. Check the quick answers below, and if that doesn't sort it, reach out directly and we'll get back to you.

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Quick answers

Frequently asked questions

Tap a question to expand it.

The position stays blank, or shows "No Fix"
A GPS fix depends on your iPhone seeing enough open sky — indoors, in a garage, or under heavy cover it can take a while, or never lock at all. Make sure you've allowed location access, then take the phone outside with a clear view up and give it 30–60 seconds. The map, saving a location, recording, and the compass all become available once there's a fix.
Does the app use my iPhone's GPS or extra hardware?
Only your iPhone. Internal GPS Info reads the phone's built-in location and motion sensors — there's no external device, no Bluetooth, and no accessory to pair. Position, speed, course, and elevation come from Core Location; g-force comes from the iPhone's accelerometer.
Why does the app need location permission?
Location is the core of the app — it's how it reads your iPhone's GPS to show and record data. The app requests "While Using the App" access only. If you declined the first prompt, you can grant it under Settings → Privacy & Security → Location Services → Internal GPS Info, or Settings → Internal GPS Info → Location.
What do Speed, Elevation and G-Force show?
Speed is ground speed and Elevation is height above sea level, both from Core Location and shown in your region's units (mph/feet or km/h/metres). G-Force is the combined cornering-and-braking force measured by the iPhone's accelerometer. Position, speed, and elevation need a GPS fix; g-force is always live.
Why do Speed and course read "--" when I'm standing still?
That's expected. GPS works out speed and direction of travel from movement, so when you're stationary the phone can't report a reliable value and the app shows "--". They fill in as soon as you're moving.
What is the "GPS Rate" row?
It shows how many position fixes per second your iPhone is currently delivering (for example 1.0 /s). iPhones typically provide about one fix per second, so around 1.0 /s is normal. It's a quick way to confirm live updates are flowing.
How do the performance timers (0–60, ¼ mile) work?
Open the Timers tab and pick a mode. 0–60 / ¼ mile is a standing-start run: come to a complete stop, tap Arm, then accelerate — the app records 0–30, 0–60 and 0–100 mph (or 0–50 / 0–100 / 0–160 km/h) plus your eighth- and quarter-mile times with trap speed. Roll-on times a rolling interval such as 60–130, and Braking measures the time and distance to stop from a speed you set. Your best time for each metric is saved. Because the iPhone reports roughly one fix per second, results are interpolated between fixes for sub-second resolution — ideal for comparing your own runs, though not a substitute for a dragstrip timing beam. Use the timers only where it's safe and legal.
How does the lap timer work?
On the Laps tab, drive to your start/finish point and tap Set Start/Finish — this lays a line across the track at your position. Each time you cross it, the app closes the current lap and starts the next, listing your lap times with the best lap highlighted and a live timer for the lap in progress. For the cleanest line, set it while moving through it in your racing direction.
What analytics do I get for a recorded run?
Open a run from the Sessions tab to see its average moving speed, elevation gain and loss, and peak lateral g, along with speed-over-time and elevation graphs. From there you can also play it back on a map or export it as GPX or CSV.
How do I record a run and play it back?
Once you have a fix, tap Record on the main screen — a red banner shows the elapsed time and how many points have been captured. Tap Stop to finish and name it. Open your recordings from the Sessions tab, tap a run, and choose Play on Map to replay it with a track colored by speed, a moving marker, a scrubber, and a live data panel. The screen stays on while you're recording so the phone won't auto-lock and stop the run; if you do leave the app mid-run, the recording is saved automatically.
How do I get my data out — GPX or CSV?
Open a recording from the sessions list and tap Export GPX or Export CSV. GPX opens in Google Earth and most track-analysis tools; CSV (one row per sample, with time, position, elevation, speed, heading and g-force) opens in any spreadsheet. Saved locations can also be exported — a single one is shared as text, and Export All produces a PDF table you can print or email.
The compass arrow seems wrong when I'm standing still
This is normal. The compass works out direction from your movement, so it's only accurate while you're moving. When you're stopped it can't tell which way you're facing, so it points relative to North and asks you to start moving.
My accuracy reads poorly — can I improve it?
Tall buildings, tunnels, and indoor spaces all reduce GPS accuracy. Move to open sky for the best fix. Also check that Precise Location is enabled for the app under Settings → Internal GPS Info → Location — with it off, iOS deliberately coarsens your position.
Where are my recordings and saved locations kept?
On your iPhone only. Recorded runs and saved locations are stored on the device and kept between sessions — there's no account and no cloud. They stay there until you delete them, or until you choose to share or export one.
Does the app collect or share my data?
No. Internal GPS Info has no analytics, no ad tracking, and no backend server. Your location is used on the device to show and record GPS data, and nothing leaves your iPhone unless you explicitly share or export it. See the Privacy section for details.
What iOS version do I need?
iOS 17.0 or later, on any iPhone that supports it.
Still stuck?

Work through these in order

This sequence resolves the large majority of "no position" reports.

1

Grant location access

Open Settings → Privacy & Security → Location Services, confirm the master switch is on, then set Internal GPS Info to While Using the App.

2

Turn on Precise Location

In Settings → Internal GPS Info → Location, enable Precise Location so iOS gives the app full-accuracy fixes rather than an approximate area.

3

Go outside with a clear view of the sky

GPS needs line of sight to satellites. Step away from buildings and cover and give it 30–60 seconds to lock on; the accuracy figure will tighten as it settles.

4

Check Airplane Mode and Location Services

Airplane Mode disables GPS-assist data. Turn it off, and make sure Location Services as a whole is enabled in Settings.

5

Force close and reopen the app

Swipe up from the app switcher to fully close Internal GPS Info, then relaunch it so it requests a fresh fix.

6

Update iOS

Settings → General → Software Update. Location and sensor fixes ship in point releases fairly often.

Privacy policy

Your data stays on your device

This section doubles as the app's privacy policy.

Internal GPS Info is designed to work entirely on your iPhone. It has no user accounts, no cloud sync, no analytics, no advertising, and no third-party SDKs that collect data.

What the app accesses

  • Location (while using the app) — used to display your live GPS data, to record runs, to save locations, and to power the navigation compass.
  • Motion & fitness (accelerometer) — used to display and record g-force.

How your data is stored and used

  • Location and motion data are processed on your device, in real time, to show readings on screen.
  • Recorded sessions and saved locations are stored only on your iPhone, and remain there until you delete them.
  • The app does not transmit your location, recordings, or any other data to the developer or to any server.
  • Data leaves your device only when you choose to share or export it (for example, emailing a location, or exporting a GPX/CSV/PDF through the iOS share sheet). Where it goes from there is governed by the app or service you send it to.

Data collection — the developer does not collect, receive, or have access to any of your data. There is no tracking, in the sense defined by Apple's App Tracking Transparency, and no data is shared with third parties.

Children — the app is not directed at children and collects no personal information from anyone.

Contact — questions about privacy can be sent to nsat-dev@pm.me.

Last updated: October 7, 2026

Still not sorted

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We read every message and typically reply within 2 business days.

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To help us diagnose it faster, include:

  • iPhone model and iOS version
  • App version (from the App Store listing)
  • Whether location access is set to "While Using the App" with Precise Location on
  • What you expected to happen, and what happened instead
Reference

App information

App nameInternal GPS Info
Version1.0
PlatformiOS 17.0 or later
Data sourceiPhone GPS & motion sensors
Live readoutTime, position, speed, elevation, g-force
RecordingOn-device · GPX / CSV export · map playback
Permissions usedLocation (When In Use), Motion
Data collectionNone — no analytics, no accounts