Where a device broadcasts its battery level, the scan shows it. On a search that is not a nice-to-have, it is your deadline.
How it works
- ScanBattery appears next to any device that broadcasts the value.
- Read it as a clockHigh battery means you can search methodically. Low battery means search now, then check the last-seen map before it stops transmitting.
- Save the low onesSaving a device logs its position each time it is seen, so when the battery does die you still have a pin.
When you’d use it
Prioritising a search
Two things are missing. The one at 15% is the one to find first.
Checking accessories without pairing
Read the level on a device that is paired to somebody else’s phone, or to a laptop that is not to hand.
Requirements
| Platform | iPhone, iOS 17.0 or later |
|---|---|
| Added in | Version 1.0 |
| Permissions | Bluetooth |
| Account needed | No, no sign-up, nothing collected |
| Works offline | Yes |
More of what the app does
Each feature covers a case the others cannot.
- Bluetooth scanner for iPhone, Scan tab
- Clap to find your phone, Clap tab
- Last-seen map for your devices, Map tab
- Get warmer, get colder, Inside Scan
- What to do if you find someone else’s device, Guidance
- How to find something you left at a swimming pool
- All features, the complete list
Common questions
Why do some devices not show a battery level?
Because they do not broadcast one. Battery in the advertisement packet is optional in the Bluetooth spec. Apple accessories and most current headphones include it; budget tags, older speakers and most car systems do not.
Is the percentage accurate?
It is exactly the figure the device itself reports, unmodified. Accuracy is down to the manufacturer, and cheap hardware tends to round hard, 100, 75, 50, 25.