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BATTERY RECORDS FOR IPHONE & IPAD

Your battery today.
Its story over time.

Capacity, charge cycles, and the changes in between. Turn everyday logs into a better understanding of your devices.

Download on the App StoreSee how it works

AltStore PAL is also available. The PAL version has no in-app donations.

Free · In-app purchasesiPhone / iPad / Apple Watch

MochiLogiPhone 15 Pro
Battery historySAMPLE / 2026
Sample period
9393%Estimated capacity
APROCT ’25SEP ’26
Charge cycles248248 cycles
Logged capacity3,0483,048 mAh
Illustrative preview · Sample data
Build a history. Discover the changes.
01
Record

Capacity, cycles, and log dates

02
Explore

Compare your history in charts

03
Take it with you

On iPhone, iPad, and Watch

YOUR BATTERY, OVER TIME

More than a number.
A history you can see.

Make sense of the details in your analytics logs. Keep each device’s records together and explore them at your own pace.

01

Connect the dots.

See capacity and charge cycles change over time. Keep separate records for each of your devices.

02

Share a log. Open MochiLog.

Open MochiLog from the analytics log’s share menu to import it. You can also import a saved file from the app.

03

Pick up where you left off.

Enable iCloud sync to share records between your iPhone and iPad using the same Apple Account.

04

A quick look, on your wrist.

Send records to your paired Apple Watch and view the devices imported on your iPhone. This does not continuously measure the Watch’s own battery.

PC 1.0.0 · AUTOMATIC LOG COLLECTION

Less time finding logs.
More time seeing the story.

MochiLog Mac and Windows collect daily battery logs for you to receive and record when you open the mobile app. An optional tab also shows current cycle count and capacity, separate from history. Manual mobile import remains available without a computer.

  • Includes paired Apple Watch logs stored on iPhone
  • Transfers batches securely from Mac or Windows to iPhone or iPad
  • Switch on Live Battery in settings to see current readings separately from history
PC 1.0.0 is available on GitHub. Mobile 4.0.0 is being prepared for App Store review and is currently available through TestFlight. PC Transfer requires iOS/iPadOS 27, macOS 27 or Windows 11. Daily log collection needs an unlocked device. Current values are not saved to history or iCloud.

TestFlight ↗Mac ↗Windows ↗

PRIVATE BY DESIGN

Your logs. Your device.

Log analysis runs on your device. iCloud sync is optional, and Mac transfer stays on your local network. Support receives the information you send when you contact us.

How your data is handled

GETTING STARTED

Your first record, in 3 steps.

Start with one recent analytics log. An in-app tutorial helps you along the way.

  1. 01

    Find an analytics log

    Go to Settings → Privacy & Security → Analytics & Improvements → Analytics Data. Look for a file starting with Analytics-.

  2. 02

    Open it in MochiLog

    Use the log’s share button and choose MochiLog. If it isn’t listed, save the log to Files, then import it from the app.

  3. 03

    Explore your records

    Review and save capacity, cycles, and other available values. Add logs from different dates to see trends in the charts.

See how it works

MOCHILOG 4.0.0

More time with your records.

4.0.0 adds automatic log collection, current battery readings and multi-record deletion. It is being prepared for App Store review, supports eight languages, and still works without a PC.

日本語 / English / 简体中文 / 繁體中文 / 한국어 / Español / Français / Deutsch

Check TestFlight

Beta features and available places depend on the current distribution.

FAQ

A few things worth knowing.

Why is the capacity different from Settings?

MochiLog displays values from logs and calculations using reference capacities. Calculation methods and recording dates can differ from Settings. For repair or replacement decisions, refer to Apple’s guidance and official diagnostics.

Why can’t I find an analytics log?

Log availability depends on your settings and OS. Changing analytics sharing settings may not generate a log immediately. Check again later and refer to the in-app tutorial for supported logs.

Which devices and OS versions are supported?

iOS and iPadOS 16 or later, with watchOS 9 or later for Apple Watch. iCloud sync requires iOS or iPadOS 17 or later. Some features vary with the app and OS version. Available data varies by device and log format. See the App Store for current requirements.

Does MochiLog measure my battery automatically?

Normal records use imported Analytics logs. The PC companion can collect and transfer daily logs and offers an optional current-values view. Current values are not saved as history. Manual import still works on mobile without a computer.

Can I import multiple files?

The public release has known OS-related limitations, and multi-file imports are being improved. If an import does not work, import your files one at a time.

A log today. A little more insight tomorrow.

Get to know the devices you use every day.

Download on the App Store

Values are reference information derived from logs. They do not replace official Apple diagnostics or hardware warranties.