---
title: "Battery Saver - Power Master - Reviews, Revenue and Downloads in Japan | Apple App Store"
description: "Battery Saver - Power Master is a simple but professional tool to check battery status. Battery Saver can visualize the details of battery precisely and protect your battery. Download now ！  -Predict "
---

# Battery Saver - Power Master — Japan

![Battery Saver App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple125/v4/32/1d/2b/321d2bae-4b54-d30f-982a-a7b3256de381/AppIcon-0-0-1x_U007emarketing-0-0-0-7-0-0-sRGB-0-0-0-GLES2_U002c0-512MB-85-220-0-0.png/434x0w.png)

**Developer:** [欣 张](https://apptail.io/developer/developer-sthpR)
**Category:** Utilities
**Rating:** 4.9/5 (813 ratings)
**Price:** Free
**Bundle ID:** com.geeksoft.BatterySaver
**Store:** Apple App Store
**Country:** Japan
**Version:** 1.4 (released 2021-09-01)
**Original Release:** 2020-05-23
**Languages:** English

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/jp/app/app/id1514077251)
**AppTail Page:** [https://apptail.io/app/battery-saver-power-master-gsv/japan](https://apptail.io/app/battery-saver-power-master-gsv/japan)

## Battery Saver Description
Battery Saver - Power Master is a simple but professional tool to check battery status. Battery Saver can visualize the details of battery precisely and protect your battery. Download now ！

-Predict the runtime of battery : no more concern about power off 
-Remind you to stop when the battery is fully charged
-Tips for battery maintenance
-Beautiful screensavers when your iPhone is charging

Auto-renewable subscriptions
- $0.99 per week
- $6.99 per year
- $9.99 for Lifetime

Rules that apply to all subscriptions:
– Payment will be charged to iTunes Account at confirmation of purchase
– Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period
– Account will be charged for renewal within 24-hours before the end of the current period, and identify the cost of the renewal
– Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase
– Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable

* Terms of Use:
* Privacy Policy:
* Contact us:

## Battery Saver Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource114/v4/f1/11/4a/f1114aa1-2792-c905-b76c-1630d10d581a/9fb02661-28c0-4409-8972-85552cb36ca6_6.5_A.png/1242x2688.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource114/v4/fa/d2/bd/fad2bdfc-9440-6f92-4113-328372fa6b3e/d75ee4a9-7d56-4216-ba7b-4a6ec2528af2_6.5_B.png/1242x2688.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource124/v4/77/b5/99/77b599c3-e5d1-b5c1-d96a-4789bc3e3795/56a348ef-d30e-4e92-9689-fc3c797bc654_6.5_C.png/1242x2688.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource124/v4/30/6d/72/306d722d-0a3a-3ef1-06ba-bf1a54cd8bbe/64797eeb-52c8-47a0-a01f-e14c270148a4_6.5_D.png/1242x2688.png)

## Battery Saver Rating Breakdown in Japan
- 5 stars: 749 (92%)
- 4 stars: 28 (3%)
- 3 stars: 20 (2%)
- 2 stars: 13 (2%)
- 1 stars: 3 (0%)

## Battery Saver Reviews in Japan

### *---- "課金したのに何も変わらず"
1,220円支払ったのにプロへのアップグレードが表示されたまま何も変わらず。広告もで消えません。 Restore Purchaseも効果なし。 返金請求します。
-- The motoken, 2021-12-04

### *---- "使い勝手悪っ！！"
さっさとメモリクリーンして戻るを押すと中途半端の状態でメモリの空きを増やさないし、再度やり直ししようとしてクリーンボタンをタップすると、一度クリーンした扱いになってしばらくはクリーンさせて貰えない。

更にはこのアプリでメモリの空きを調べると数%と表示するけど、高評価出してる他社メモリクリーンアプリで見たら最大10倍前後の空きがあると表示する。
全くもってアプリとスマホの整合性が取れていない。

このアプリがネットで紹介されていたから数ヶ月、仕方なく我慢して利用していたけど、もう我慢ならん。他社メモリクリーンアプリに乗り換えたのでサヨナラバイバイ。
-- 楽園の巫女巫女ナース, 2021-11-08

### ***** "見やすい！"
そして美しいです。
シンプルなんですけど分かりやすくて便利です
-- Uchimura Sorai, 2020-07-19

### ***** "良き"
良き良き良き
-- Hitarashi Noriko, 2020-07-19

### ***** "とても"
シンプルで見やすいです。
-- Nakahara Akihiro, 2020-07-19

### ***** "使い易い"
Os7になっても快調で見やすい。
-- Yagi Kenji, 2020-07-19

### ***** "なかなか良い"
このアプリは、iPhoneの電池劣化問題が起きた後から利用して電池の管理をしています。
助かっています！
-- Fukutsuchi Terumoto, 2020-07-19

### ***** "素晴らしい"
分かりやすいです
-- Wakuni Kiku, 2020-07-19

### ***** "とても便利！"
開いたらすぐ見れるのがいいですね！愛用しています！
-- Kida Koi, 2020-07-19

### ***** "good"
とても便利です
-- Yamabe Etsuya, 2020-07-19

[View all Battery Saver reviews and detailed analytics on AppTail](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=reviews)

## Battery Saver In-App Purchases
| Item | Price |
|------|-------|
| Monthly | ¥120.00 |
| Yearly | ¥780.00 |
| LifeTime | ¥1.50 |
| Remove AD | ¥150.00 |


## Battery Saver Discovered Keywords
- battery
- battery testing
- battery saver
- power master

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## Battery Saver Available In
- [Japan](https://apptail.io/app/battery-saver-power-master-gsv/japan)
- [Ukraine](https://apptail.io/app/battery-saver-power-master-gsv/ukraine)
- [Türkiye](https://apptail.io/app/battery-saver-power-master-gsv/turkey)
- [Indonesia](https://apptail.io/app/battery-saver-power-master-gsv/indonesia)
- [South Korea](https://apptail.io/app/battery-saver-power-master-gsv/south-korea)
- [Russia](https://apptail.io/app/battery-saver-power-master-gsv/russia)
- [United Arab Emirates](https://apptail.io/app/battery-saver-power-master-gsv/united-arab-emirates)
- [Saudi Arabia](https://apptail.io/app/battery-saver-power-master-gsv/saudi-arabia)
- [Canada](https://apptail.io/app/battery-saver-power-master-gsv/canada)
- [Germany](https://apptail.io/app/battery-saver-power-master-gsv/germany)
- [Australia](https://apptail.io/app/battery-saver-power-master-gsv/australia)
- [United Kingdom](https://apptail.io/app/battery-saver-power-master-gsv/united-kingdom)
- [United States](https://apptail.io/app/battery-saver-power-master-gsv/united-states)
- [Taiwan](https://apptail.io/app/battery-saver-power-master-gsv/taiwan)
- [Vietnam](https://apptail.io/app/battery-saver-power-master-gsv/vietnam)
- [Philippines](https://apptail.io/app/battery-saver-power-master-gsv/philippines)
- [France](https://apptail.io/app/battery-saver-power-master-gsv/france)
- [Malaysia](https://apptail.io/app/battery-saver-power-master-gsv/malaysia)
- [India](https://apptail.io/app/battery-saver-power-master-gsv/india)
- [Thailand](https://apptail.io/app/battery-saver-power-master-gsv/thailand)
- [Kuwait](https://apptail.io/app/battery-saver-power-master-gsv/kuwait)
- [South Africa](https://apptail.io/app/battery-saver-power-master-gsv/south-africa)
- [Singapore](https://apptail.io/app/battery-saver-power-master-gsv/singapore)
- [China](https://apptail.io/app/battery-saver-power-master-gsv/china)
- [Italy](https://apptail.io/app/battery-saver-power-master-gsv/italy)
- [Netherlands](https://apptail.io/app/battery-saver-power-master-gsv/netherlands)
- [Belgium](https://apptail.io/app/battery-saver-power-master-gsv/belgium)
- [Brazil](https://apptail.io/app/battery-saver-power-master-gsv/brazil)
- [Pakistan](https://apptail.io/app/battery-saver-power-master-gsv/pakistan)
- [Nigeria](https://apptail.io/app/battery-saver-power-master-gsv/nigeria)
- [Greece](https://apptail.io/app/battery-saver-power-master-gsv/greece)
- [Mexico](https://apptail.io/app/battery-saver-power-master-gsv/mexico)
- [Dominican Republic](https://apptail.io/app/battery-saver-power-master-gsv/dominican-republic)
- [Portugal](https://apptail.io/app/battery-saver-power-master-gsv/portugal)
- [Sweden](https://apptail.io/app/battery-saver-power-master-gsv/sweden)
- [Ghana](https://apptail.io/app/battery-saver-power-master-gsv/ghana)
- [Peru](https://apptail.io/app/battery-saver-power-master-gsv/peru)
- [Angola](https://apptail.io/app/battery-saver-power-master-gsv/angola)
- [Bahrain](https://apptail.io/app/battery-saver-power-master-gsv/bahrain)
- [Belarus](https://apptail.io/app/battery-saver-power-master-gsv/belarus)
- [Belize](https://apptail.io/app/battery-saver-power-master-gsv/belize)
- [Colombia](https://apptail.io/app/battery-saver-power-master-gsv/colombia)
- [Czechia](https://apptail.io/app/battery-saver-power-master-gsv/czechia)
- [Egypt](https://apptail.io/app/battery-saver-power-master-gsv/egypt)
- [Spain](https://apptail.io/app/battery-saver-power-master-gsv/spain)
- [Finland](https://apptail.io/app/battery-saver-power-master-gsv/finland)
- [Israel](https://apptail.io/app/battery-saver-power-master-gsv/israel)
- [Sri Lanka](https://apptail.io/app/battery-saver-power-master-gsv/sri-lanka)
- [Poland](https://apptail.io/app/battery-saver-power-master-gsv/poland)
- [Romania](https://apptail.io/app/battery-saver-power-master-gsv/romania)
- [Jordan](https://apptail.io/app/battery-saver-power-master-gsv/jordan)
- [Kenya](https://apptail.io/app/battery-saver-power-master-gsv/kenya)
- [Hungary](https://apptail.io/app/battery-saver-power-master-gsv/hungary)
- [Croatia](https://apptail.io/app/battery-saver-power-master-gsv/croatia)
- [Cayman Islands](https://apptail.io/app/battery-saver-power-master-gsv/cayman-islands)
- [Kazakhstan](https://apptail.io/app/battery-saver-power-master-gsv/kazakhstan)
- [Lebanon](https://apptail.io/app/battery-saver-power-master-gsv/lebanon)
- [Uzbekistan](https://apptail.io/app/battery-saver-power-master-gsv/uzbekistan)
- [Lithuania](https://apptail.io/app/battery-saver-power-master-gsv/lithuania)
- [Luxembourg](https://apptail.io/app/battery-saver-power-master-gsv/luxembourg)
- [Latvia](https://apptail.io/app/battery-saver-power-master-gsv/latvia)
- [Madagascar](https://apptail.io/app/battery-saver-power-master-gsv/madagascar)
- [North Macedonia](https://apptail.io/app/battery-saver-power-master-gsv/north-macedonia)
- [Mali](https://apptail.io/app/battery-saver-power-master-gsv/mali)
- [Macao SAR China](https://apptail.io/app/battery-saver-power-master-gsv/macau)
- [Malta](https://apptail.io/app/battery-saver-power-master-gsv/malta)
- [Mauritius](https://apptail.io/app/battery-saver-power-master-gsv/mauritius)
- [Honduras](https://apptail.io/app/battery-saver-power-master-gsv/honduras)
- [Jamaica](https://apptail.io/app/battery-saver-power-master-gsv/jamaica)
- [Ireland](https://apptail.io/app/battery-saver-power-master-gsv/ireland)
- [Namibia](https://apptail.io/app/battery-saver-power-master-gsv/namibia)
- [Grenada](https://apptail.io/app/battery-saver-power-master-gsv/grenada)
- [Estonia](https://apptail.io/app/battery-saver-power-master-gsv/estonia)
- [Norway](https://apptail.io/app/battery-saver-power-master-gsv/norway)
- [Nepal](https://apptail.io/app/battery-saver-power-master-gsv/nepal)
- [New Zealand](https://apptail.io/app/battery-saver-power-master-gsv/new-zealand)
- [Oman](https://apptail.io/app/battery-saver-power-master-gsv/oman)
- [Panama](https://apptail.io/app/battery-saver-power-master-gsv/panama)
- [Ecuador](https://apptail.io/app/battery-saver-power-master-gsv/ecuador)
- [Algeria](https://apptail.io/app/battery-saver-power-master-gsv/algeria)
- [Denmark](https://apptail.io/app/battery-saver-power-master-gsv/denmark)
- [Argentina](https://apptail.io/app/battery-saver-power-master-gsv/argentina)
- [Cyprus](https://apptail.io/app/battery-saver-power-master-gsv/cyprus)
- [Paraguay](https://apptail.io/app/battery-saver-power-master-gsv/paraguay)
- [Qatar](https://apptail.io/app/battery-saver-power-master-gsv/qatar)
- [Armenia](https://apptail.io/app/battery-saver-power-master-gsv/armenia)
- [Chile](https://apptail.io/app/battery-saver-power-master-gsv/chile)
- [Switzerland](https://apptail.io/app/battery-saver-power-master-gsv/switzerland)
- [Brunei](https://apptail.io/app/battery-saver-power-master-gsv/brunei)
- [Slovenia](https://apptail.io/app/battery-saver-power-master-gsv/slovenia)
- [Slovakia](https://apptail.io/app/battery-saver-power-master-gsv/slovakia)
- [Senegal](https://apptail.io/app/battery-saver-power-master-gsv/senegal)
- [Suriname](https://apptail.io/app/battery-saver-power-master-gsv/suriname)
- [Bermuda](https://apptail.io/app/battery-saver-power-master-gsv/bermuda)
- [Tunisia](https://apptail.io/app/battery-saver-power-master-gsv/tunisia)
- [Bulgaria](https://apptail.io/app/battery-saver-power-master-gsv/bulgaria)
- [Barbados](https://apptail.io/app/battery-saver-power-master-gsv/barbados)
- [Azerbaijan](https://apptail.io/app/battery-saver-power-master-gsv/azerbaijan)
- [Uganda](https://apptail.io/app/battery-saver-power-master-gsv/uganda)
- [Austria](https://apptail.io/app/battery-saver-power-master-gsv/austria)
- [Uruguay](https://apptail.io/app/battery-saver-power-master-gsv/uruguay)
- [Iceland](https://apptail.io/app/battery-saver-power-master-gsv/iceland)
- [Hong Kong SAR China](https://apptail.io/app/battery-saver-power-master-gsv/hong-kong)
- [Botswana](https://apptail.io/app/battery-saver-power-master-gsv/botswana)

---

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