# 补天AR vs Second Guess

The clearest difference is update cadence: 补天AR at every 9 days against Second Guess's every 3 weeks. 补天AR also leads on iOS requirement (13.0 vs 17.0). 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.

补天AR ships an update every 9 days, Second Guess every 3 weeks. The most recent releases landed on September 18, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | 补天AR | Second Guess |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 3 weeks |
| Monetization | — | Free |
| Size | 153 MB | 1 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 9+ | 4+ |
| Developer | [翚 虞](https://appshunter.io/developer/1711130570) | [KUAN HUANG](https://appshunter.io/developer/6783854163) |

## What reviewers say

### 补天AR

[App page](https://appshunter.io/ios/app/ar/id6470826959)

**Features:** macOS Compatibility

**In-app purchases:** none


### Second Guess

[App page](https://appshunter.io/ios/app/second-guess/id6788762420)

Draw quickly from prompts, then have your memory wiped. Guess what your own drawings represent after a memory challenge. Share your creations and challenge friends.

**Highlights:** Draw 20 prompts against a 5-second timer, Memory-wiping color test, Guess your own drawings, Challenge friends, Unlockable Ultimate Challenge, Share drawings as cards or videos

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

**In-app purchases:** none


## Frequently asked questions

### Is 补天AR free?

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

### Is Second Guess free?

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

### Do 补天AR or Second Guess have ads?

Neither 补天AR nor Second Guess shows ads.

### Which is updated more often, 补天AR or Second Guess?

补天AR ships an update every 9 days, and Second Guess every 3 weeks. Most recently, 补天AR was updated on September 18, 2026 and Second Guess on October 14, 2026.

---

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