How fast is your battery ageing?
Drop in a screenshot, confirm the values — and see immediately where your iPhone sits against everyone else. No sign-up, no serial number, and the image is discarded the moment it has been read.
How it works — 30 seconds
For iPhone 15 or newer running iOS 17.4 or newer- Open Settings on your iPhone
- Tap Battery, then Battery Health
- Take a screenshot there: side button + volume up together
- Come back here and upload that screenshot — it is in your Photos
That page shows maximum capacity, cycle count, manufacture date and first use. Those four values are all we read — nothing else.
Please do not photograph the screen — a real screenshot is read far more reliably.
Reading the values…
This usually takes two to five seconds.
How iPhone batteries age
From every device submitted so far. Each screenshot makes this curve firmer.
Comparison, not a single number
Knowing your battery reads 91 per cent tells you nothing on its own. It only becomes useful when you ask: at 420 cycles and 14 months of use, is that good? That is the question this answers.
Honest spread
We show the median and percentile bands, not flattering averages. Where the data is thin we say so, instead of inventing a curve.
Minimal by design
No serial number, no IMEI, no email, no account. Manufacture and first-use dates to the month — that is all iOS itself shows. The screenshot never leaves memory for a disk.