# PERC vs 小步读书

The clearest difference is iOS requirement: PERC at 10.0 against 小步读书's 13.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on November 7, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | PERC | 小步读书 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Size | 50 MB | 204 MB |
| Requires iOS | **10.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [深圳市好学多科技有限公司](https://appshunter.io/developer/1568037324) | [江苏亲近母语文化教育有限公司](https://appshunter.io/developer/1521437326) |

## What reviewers say

### PERC

[App page](https://appshunter.io/ios/app/perc/id1575353864)

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

**In-app purchases:** none


### 小步读书

[App page](https://appshunter.io/ios/app/id6744951476)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is PERC free?

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

### Is 小步读书 free?

小步读书 is free to download, with no in-app purchases.

### Do PERC or 小步读书 have ads?

Neither PERC nor 小步读书 shows ads.

### Which is updated more often, PERC or 小步读书?

PERC ships an update every 3 weeks, and 小步读书 every 3 weeks. Most recently, PERC was updated on November 7, 2026 and 小步读书 on November 5, 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.*