Axsen

Axsen is a fully on-device sensor dashboard. It turns everything your iPhone or iPad can measure without a network connection, from location and motion to hardware details, into clear live charts. It works the same offline or in Airplane Mode.

SENSORS
• Location & heading: latitude, longitude, altitude, horizontal and vertical accuracy, speed, course, floor, magnetic and true heading, with a compass
• Attitude: pitch, roll and yaw gauges and a bubble level, plus quaternion, gravity, user acceleration and rotation rate
• Raw IMU: live accelerometer, gyroscope and magnetometer charts at 10–100 Hz
• Barometer: pressure, relative altitude change and absolute altitude. Set the current reading to 0; the offset clears when you leave the app
• Steps & activity: today's steps, distance, floors, pace, cadence and activity type
• Device status & capabilities: battery, thermal state, brightness, proximity sensor, and which sensors your device supports (including UWB and LiDAR)

CONNECTIVITY
• Network overview: live download and upload speed, active interface, Low Data Mode, IPv4/IPv6 support
• Wi-Fi & cellular: interface addresses, traffic counters, and the radio technology of each SIM (5G SA, 5G NSA, LTE and more)
• Bluetooth: scan nearby Bluetooth Low Energy devices on demand to see signal strength, manufacturer and advertisement details. Axsen only listens and never connects. Open a device to see a 60-second signal chart
• Audio output: current output device, volume, channels, sample rate and latency

DEVICE
• Model, chip, process node, performance and efficiency cores, Neural Engine, GPU and Metal features
• Memory usage, storage and battery state
• Live total and per-core CPU load, boot time and uptime
• Screen check: solid colors, grayscale and multitouch. Listed models can be compared with the previous generation on chip, cores and GPU

RECORD
On the Sensors tab, choose location, attitude, raw IMU, barometer and steps, then start. Stop to export CSV (one file per channel, with a Unix timestamp in the first column) or one JSON file. With precise location hidden, coordinates stay at about 1 km. Recording stops in the background. The file is written to a temporary folder only when you export, and leaves the device only if you share it.

SHARE
Pick the sections you want and turn the current readings into a single image to save or send. Precise location, IP addresses and device names are hidden by default.

PRIVACY
Axsen makes no network requests and has no account, ads or analytics. Live readings appear on screen, and sampling stops in the background. A recording is written to a temporary folder only when you export it, and is not uploaded. You can decline the location, motion and Bluetooth permissions and keep using everything else.

Available in 14 languages, with VoiceOver and Dynamic Type support.

Note: some readings depend on your hardware. For example, the barometer, pedometer, UWB and LiDAR are only available on some models. iOS does not expose satellite counts, Wi-Fi signal strength or battery health, so Axsen does not show them.