# 识知 vs AR Maths 2

The clearest difference is update cadence: AR Maths 2 at every 6 days against 识知's every 41 months. AR Maths 2 also leads on price ($1.99 vs $5.99). 识知's advantage is iOS requirement (10.0 vs 14.0). On ads, in-app purchases and device support there is nothing between them.

识知 costs $5.99 and AR Maths 2 $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

识知 ships an update every 41 months, AR Maths 2 every 6 days. The most recent releases landed on November 30, 2025 and October 25, 2026 respectively.

## The numbers

| Metric | 识知 | AR Maths 2 |
| --- | --- | --- |
| Price | $5.99 | **$1.99** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 41 months | **Every 6 days** |
| Size | 47 MB | 267 MB |
| Requires iOS | **10.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [云飞 李](https://appshunter.io/developer/1533837393) | [Dai Phan](https://appshunter.io/developer/1462563314) |

## What reviewers say

### 识知

[App page](https://appshunter.io/ios/app/id1557868598)

**Features:** macOS Compatibility

**In-app purchases:** none


### AR Maths 2

[App page](https://appshunter.io/ios/app/ar-maths-2/id6553971646)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 识知 free?

识知 costs $5.99, with no in-app purchases.

### Is AR Maths 2 free?

AR Maths 2 costs $1.99, with no in-app purchases.

### Do 识知 or AR Maths 2 have ads?

Neither 识知 nor AR Maths 2 shows ads.

### Which is updated more often, 识知 or AR Maths 2?

识知 ships an update every 41 months, and AR Maths 2 every 6 days. Most recently, 识知 was updated on November 30, 2025 and AR Maths 2 on October 25, 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.*