Ampere APK

Rating: 133K+ votes, 4.5/5

Did you ever felt, that one Charger/USB cable set charges your device really fast and the other not? Now, you can prove...[read more]

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6.8 MB

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File Infos

Size‎6.8 MB
File Namecom.gombosdev.ampere-vv2.24.apk
Requires Android VersionAndroid 4.0+ (Ice Cream Sandwich)
Package Namecom.gombosdev.ampere
Author's NotesMeasure the charging and discharging current of your battery.

Certificate fingerprints (Signature):

SHA-1: 31241BBB6AAF2C3857C7A24BED10F478716D8CC3
SHA-256: AD9BFC72ABFA4E6C34DD14F379E5F7BF73374C6DAC28D8B251C3ACD900A9FAE2
The cryptographic signature guarantees the file is safe to install and was not tampered with in any way.

File hashes:

MD5: 9D876160C990B559DCAEB9BA339926C6
SHA-1: 5383C80084D288C8CB5A80F71845B06E1863BFA8
SHA-256: B241A076B6E3D7D91706BFA2D17347943C4A07DB9648DEA71EC8BC9F2EB1BC9D
Verify the file you downloaded is not corrupt and was not tampered with using the file hashes above.

Application Permissions


Screenshots (3 pics)

Screenshot 01Screenshot 02Screenshot 03

About Ampere APK

Ampere APK Download for Android
Ampere APK Download for Android

Latest updates

What's new in version v2.24

* Bug fixes and minor enhancements
Ampere FAQ:
For more info please read the change history: Settings => About Ampere => Change history
Note: When ampere would stuck in "measuring" state (after a firmware upgrade to Android 7.x) please clear Amperes's app cache.
1.) Open the "Android Settings app" => "Apps" => "Ampere"
2.) Clear all data under the "Storage" menu
3.) Restart Ampere


Did you ever felt, that one Charger/USB cable set charges your device really fast and the other not? Now, you can prove this with Ampere.

Measure the charging and discharging current of your battery.

PRO features:
- Widgets
- Notification
- Alerts on device
- Alerts on Android Wear

The app works on Android 4.0.3+ devices. Not every device is supported because there are devices which lacks an appropriate measurement chip (or the interface) and they can not be supported at all. Please read the list of not supported phones at the end of the description.

The app is not meant to be mA accurate. It is only good for evaluate which Charger/USB cable combo is working the best for you on the same device.


Please read also the FAQ:


Start the app and wait ca. 10 seconds ("measuring" is on the display). After this time, the charging or discharging current will be shown.

The current depends on many things:
- Charger (USB/AC/Wireless)
- USB cable
- Phone type
- Current tasks running
- Display brightness
- WiFi state
- GPS state

Please don't use the readings on this app as concrete science. However, the readings are good enough to relatively measure how various chargers and USB cables fair on the same device.

If the app shows 0mA all the time, please use the settings option "Old measurement method". You can force the app with it to use the old measurement interface, if the Lollipop device has at least one.

Unfortunately some Samsung devices don't give correct (measured) values (e.g.: S5), just the maximum possible charging current with the actual USB cable/charger configuration. This is a firmware problem.


Background info: The app measures the charging/discharging current of the battery. If your phone is not connected to a charger, you see the discharging current which is negative. If you connect a charger then the current what the charger gives will be used to supply your phone and the remaining power will be charged into the battery.

If your phone consumes 300 mA without a charger connected (-300mA on the display), then a 500 mA charger will charge your battery maximum with 200 mA current (200mA on display).


Technical info: The displayed current is an average value from 50 measurements minus the 10 upper values and the 10 lower values. The displayed current can be shaky or unstable or even zero which means, that the Android system provides unstable values. Every company uses different battery types and other hardware making it difficult to get accurate results about your charger.


LiPo batteries don't draw the maximum for the full time it takes to charge the phone. If your battery is charged almost full then the charging current will be much less as by lower battery levels.

- A graph explaining LiPo charge stages:
- Dave's (EEVBlog) LiPo Charging Tutorial:


Phones/ROMS compatible only with "Old measurement method" switched on and selected the right "Measurement interface":
➤ HTC One M7 / M8
➤ LG G3

Phones/ROMS reported to be not working with this app:
➤ Galaxy Grand Prime - fortuna3gdtv
➤ Galaxy Note2 - t03g, t03gchn, t03gchnduos, t03gcmcc, t03gctc, t03gcuduos
➤ Galaxy S3 - d2att, d2spr, d2vmu
➤ Galaxy Tab4 7.0 - degas3g
➤ HTC Desire 510 - htc_a11ul8x26
➤ HTC One S (ville), X (endeavoru), XL (evita)
➤ HTC Sensation 4G - pyramid

Please do not give wrong rating, if your phone is one of the above. Not the app is wrong, but your phone does not support this kind of measurement yet.

If the app doesn't work on your device with pre-Lollipop Android version, then please read the first and the second posts in this XDA developer forum thread: . Please post your problem with screenshots in the XDA thread.

Please read also the FAQ:

User's Reivew

4 ★ Awesome little program good enough to pay for the upgrade to pro! Slightissue with Android 7.1.1 and the new Moto E4 Plus. Perhaps the Developerwould like to contact me and I will help fault findby Trevor Hibdige on May 12, 2018
5 ★ I have another app for my Note 8 called Galaxy charging current. Works verywell on the Samsung very granular. This app is quite good, but it displaysvoltage apparently in increments of 10. And a personal irritation, please,please grammar Nazi here......."Did you ever felt" FELT? Really? Did youever think, or believe, did you ever suspect, do you suspect?by Daryl Friedrich on May 12, 2018
5 ★ Is there a way to only boot the app whilst charging? I just want it to onlyshow the amp input in the notification area only when it is charging. Iknow you can turn it off when not charging but that only turns off thenotification and the app is still running in the Kevin Ta on May 14, 2018
5 ★ Your battery voltage reads 3717.934 V which is incorrect. It should read3.717 V. Any more digits are useless because accuracy is not much betterthan Donald Pauly on May 14, 2018
5 ★ Fantastic, so good I paid for the Pro version nice clean UI Ideal forchecking out USB cable's and chargers would be great if there was a graphicdisplay that also recorded data overnight ie min Max mah also total mahused to charge phone or tablet to maximum and a timer for example 2300mhaused charge in 3 hours 23 mins keep up the good work and again fantasticapplication.😉by Gerald Read on May 14, 2018
5 ★ This has a battery of information available. Thanksby Glenn Chugg on May 12, 2018
5 ★ It helped me a lot determining the correct power Muhammad Ali Dildar on May 12, 2018
5 ★ VERY MUCH USEFULby ashoka r.n on May 14, 2018
4 ★ Love the app. i would like to see accurate voltage readings for my Droidturbo 2. the charger delivers at times 12 volts whereas most chargers stayat 5 volts. This app never shows above 4.41 volts on my charger. I know mycharger voltage goes to 12 because it burns out lighted USB cables rightaway. Keep up the good work.your doing Kelly D. Sharp on May 03, 2018
5 ★ Helps me to find out what chargers are slow and won't let me listen tomusic and charge at the same time. With my new USB C phone that doesn'thave a headphone David Llewellyn on May 03, 2018

How to install Ampere APK on Android phone or tablet?

Download Ampere APK file from, then follow these steps:

Update Phone Settings

  • Go to your phone Settings page
  • Tap Security or Applications (varies with device)
  • Check the Unknown Sources box
  • Confirm with OK

Go to Downloads

  • Open Downloads on your device by going to My Files or Files
  • Tap the APK file you downloaded (com.gombosdev.ampere-vv2.24.apk)
  • Tap Install when prompted, the APK file you downloaded will be installed on your device.

See more (full steps with pictures)

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