# 维系 vs Battery Analyzer Pro

The clearest difference is in-app purchases: 维系 at none against Battery Analyzer Pro's 1. 维系 also leads on iOS requirement (13.0 vs 15.6). Battery Analyzer Pro's advantage is update cadence (every 3 days vs every 3 weeks). On price, ads and device support there is nothing between them.

Both are free to download. Battery Analyzer Pro sells 1 one-off in-app purchase. 维系 asks for nothing beyond the download.

维系 ships an update every 3 weeks, Battery Analyzer Pro every 3 days. The most recent releases landed on October 18, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | 维系 | Battery Analyzer Pro |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 3 days** |
| Size | 127 MB | 7 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Wish Network Technology(Zhenjiang) Co.,Ltd.](https://appshunter.io/developer/1474741651) | [剑龙 刘](https://appshunter.io/developer/6817254113) |

## What reviewers say

### 维系

[App page](https://appshunter.io/ios/app/id1551786818)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Battery Analyzer Pro

[App page](https://appshunter.io/ios/app/battery-analyzer-pro/id6818005687)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Unlock | $2.99 | one-time |


## Frequently asked questions

### Is 维系 free?

维系 is free to download, with no in-app purchases.

### Is Battery Analyzer Pro free?

Battery Analyzer Pro is free to download, with in-app purchases available.

### Do 维系 or Battery Analyzer Pro have ads?

Neither 维系 nor Battery Analyzer Pro shows ads.

### Which is updated more often, 维系 or Battery Analyzer Pro?

维系 ships an update every 3 weeks, and Battery Analyzer Pro every 3 days. Most recently, 维系 was updated on October 18, 2026 and Battery Analyzer Pro on October 13, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*