# Annual Ring vs PowerMJ

The clearest difference is update cadence: PowerMJ at every 4 days against Annual Ring's every 3 weeks. Annual Ring's advantage is iOS requirement (10.0 vs 12.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Annual Ring ships an update every 3 weeks, PowerMJ every 4 days. The most recent releases landed on October 3, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Annual Ring | PowerMJ |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 4 days** |
| Size | 25 MB | 87 MB |
| Requires iOS | **10.0** | 12.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [颖昭 范](https://appshunter.io/developer/1476704080) | [Shanghai Power Science&Technology Co., Ltd.](https://appshunter.io/developer/1463907329) |

## What reviewers say

### Annual Ring

[App page](https://appshunter.io/ios/app/annual-ring/id1605609710)

**Features:** macOS Compatibility

**In-app purchases:** none


### PowerMJ

[App page](https://appshunter.io/ios/app/powermj/id6738763443)

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

**In-app purchases:** none


## Frequently asked questions

### Is Annual Ring free?

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

### Is PowerMJ free?

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

### Do Annual Ring or PowerMJ have ads?

Neither Annual Ring nor PowerMJ shows ads.

### Which is updated more often, Annual Ring or PowerMJ?

Annual Ring ships an update every 3 weeks, and PowerMJ every 4 days. Most recently, Annual Ring was updated on October 3, 2026 and PowerMJ on October 7, 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.*