iPhone Screenshots


It gives you notifications of data communication volume based on your communication usage limit for the month or selected days in addition to a remaining battery.
You don’t need to long in every day to confirm it.
Once it exceeds a specified volume, it sends a message or beeps an alarm to notify you the status.

You can set up an alarm as you like including the percentage and an absolute volume. There are 60 kinds of alarm sounds for you to differentiate each situation.
It also keeps a track of daily data communicant volume separately for mobile and WiFi.
Various timelines have been visualized in forms of a list and a graph.
It allows you to understand data communication volumes and battery consumption for various apps.
Use this apps to safely use of iPhone!

- In the case of using,please turn on the “Background App Refresh” switch in “Settings”.
- It has little impact on a battery to use it in the background of your iPhone.
-Calculation does not affect regardless if your iPhone is on or off.
However, when you reset your iPhone, Apps might not be restarted from iOS. It is recommended to start this App once you restart iPhone.
- As for mobile communication, the volume for 3G, 4G and LTE will be summed up. In addition, there is a small difference in transmission volume from each carrier as communication volume is calculated by iPhone. So please use the total usage volume as your reference.

What’s New

Version 2.01

-Group server changed.
-Bug fixed.

Ratings and Reviews

3.0 out of 5
1 Rating

1 Rating

Ostinato ,

Battery alarm sound difficult to configure

This app has many interesting features but I wanted mainly to tell me when my battery dropped below a certain level. However the audio alarm does not work in the foreground or background. The app gives a message that it won’t work in foreground but i also can’t get it to work in the background so the app is of little use to me. There also appears to be no way to ask for assistance.


Writeback Co.,Ltd.
14.2 MB

Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.


English, Japanese

Age Rating
In-App Purchases
  1. Delete AD and Unlimited $1.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

More By This Developer

You May Also Like