# 一车当千 vs Second Guess

The clearest difference is ads: Second Guess at none against 一车当千's shown. 一车当千's advantage is update cadence (every 6 days vs every 3 weeks) and iOS requirement (12.0 vs 17.0). On price, 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.

一车当千 ships an update every 6 days, Second Guess every 3 weeks. The most recent releases landed on October 14, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | 一车当千 | Second Guess |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 6 days** | Every 3 weeks |
| Monetization | — | Free |
| Size | 88 MB | 1 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Wuhan Wind Tunnel Network Technology Co., Ltd.](https://appshunter.io/developer/1885518437) | [KUAN HUANG](https://appshunter.io/developer/6783854163) |

## What reviewers say

### 一车当千

[App page](https://appshunter.io/ios/app/id6761511027)

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

**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 一车当千 free?

一车当千 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 一车当千 or Second Guess have ads?

一车当千 shows ads; Second Guess does not.

### Which is updated more often, 一车当千 or Second Guess?

一车当千 ships an update every 6 days, and Second Guess every 3 weeks. Most recently, 一车当千 was updated on October 14, 2026 and Second Guess on October 24, 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.*