# 自我挑戰獎勵計劃 vs 現代小數 AR 4

自我挑戰獎勵計劃 and 現代小數 AR 4 are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

## The numbers

| Metric | 自我挑戰獎勵計劃 | 現代小數 AR 4 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Size | 105 MB | 434 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Big Dipper Studio](https://appshunter.io/developer/962643670) | [Modern Educational Research Society, LTD](https://appshunter.io/developer/432268704) |

## What reviewers say

### 自我挑戰獎勵計劃

[App page](https://appshunter.io/ios/app/id1546065745)

**Features:** macOS Compatibility

**In-app purchases:** none


### 現代小數 AR 4

[App page](https://appshunter.io/ios/app/ar-4/id1567318772)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 自我挑戰獎勵計劃 free?

自我挑戰獎勵計劃 is free to download, with no in-app purchases.

### Is 現代小數 AR 4 free?

現代小數 AR 4 is free to download, with no in-app purchases.

### Do 自我挑戰獎勵計劃 or 現代小數 AR 4 have ads?

Neither 自我挑戰獎勵計劃 nor 現代小數 AR 4 shows ads.

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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.*