Version history
Ampere
30
ASO score
Text
21/100
Reviews
64/100
Graphic
40/100
Other
0/100
App Rating
4.4
Votes
36.13M
App Age
10y 11m
Last Update
Aug 31, 2025
iAP
$1.99 - 1.99
Compare with Category Top Apps
|
Metrics
|
Current App
|
Category Top Average
|
Difference
|
|---|---|---|---|
|
Installs
|
28.9M
|
71M
|
-59%
|
|
Rating
|
4.44
|
4.29
|
+4%
|
|
Number of Ratings (Voted)
|
29M
|
92.2M
|
-69%
|
|
App Age
|
10y 11m
|
6y 8m
|
+63%
|
|
In-app Purchases Price
|
$2
|
$98
|
-98
%
|
|
Update Frequency
|
117d
|
84d
|
+40%
|
|
Title Length
|
6
|
26
|
-77%
|
|
Short Description Length
|
61
|
74
|
-18%
|
|
Description Length
|
3 939
|
2 658
|
+48%
|
|
Number of Screenshots
|
880
|
1192
|
-26
%
|
|
Has Video?
|
No
|
0% has videos
|
|
|
Size
|
0MB
|
0MB
|
|
Category Ranking in United States
7 days
Last 7 days
Last 30 days
Last 90 days
Last 180 days
Last year
| Top | Dec 19, 2025 | Dec 26, 2025 |
|---|---|---|
|
No results were found!
|
||
| Top | Dec 19, 2025 | Dec 26, 2025 |
|---|---|---|
|
No results were found!
|
||
| Top | Dec 19, 2025 | Dec 26, 2025 |
|---|---|---|
|
No results were found!
|
||
| Top | Dec 19, 2025 | Dec 26, 2025 |
|---|---|---|
|
No results were found!
|
||
Downloads
Downloads Graph
Total
28.7M
Last month
190.4K
Text ASO
Title
(
Characters:
6
of 50
)
Ampere
Short Description
(
Characters:
61
of 80
)
Measure the charging and discharging current of your battery.
Description
(
Characters:
3939
of 4000
)
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
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: http://goo.gl/R8XgXX
----
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: http://batteryuniversity.com/_img/content/ion1.jpg
- Dave's (EEVBlog) LiPo Charging Tutorial: http://youtu.be/A6mKd5_-abk
----
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: http://goo.gl/pZqJg8 . Please post your problem with screenshots in the XDA thread.
Please read also the FAQ: http://goo.gl/R8XgXX }
Read more
Other
Additional Information
| Rating: | |
| Voted: | 36.13M |
| Google Play Link: | |
| Website: | |
| Email: | |
| Privacy Policy: | |
| Categories: | Tools |
| Size: | - |
| iAP: | 1.99 - 1.99 $ |
| Installs: | 28.72M |
| App Age: | 10 years 11 months |
| Release Date: | Jan 25, 2015 |
| Last Update: | Aug 31, 2025 |
| Version: | v4.35.9 |
Version history
v4.35.9
Aug 31, 2025
v4.35.9<br>* Experimental option: Show charging/discharging power in watts<br>* Bug fixes and enhancements<br><br>Ampere FAQ: http://goo.gl/R8XgXX <br><br>See also: Settings => About Ampere => Change history<br><br>Note: If Ampere gets stuck in "measuring" after a firmware update, clear the app cache:<br>1. Open "Android Settings" => "Apps" => "Ampere"<br>2. Clear all data under Storage<br>3. Restart Ampere
v4.35.8
Jun 03, 2025
v4.35.8<br>* Dark mode enhanced<br>* Layout changes for tablets<br>* Bug fixes and enhancements<br><br>Ampere FAQ: http://goo.gl/R8XgXX <br><br>See also: Settings => About Ampere => Change history<br><br>Note: If Ampere gets stuck in "measuring" after a firmware update, clear the app cache:<br>1. Open "Android Settings" => "Apps" => "Ampere"<br>2. Clear all data under Storage<br>3. Restart Ampere
