# BisonAuthy vs 上下求索

The clearest difference is in-app purchases: BisonAuthy at none against 上下求索's 5. BisonAuthy also leads on update cadence (every 3 weeks vs every 6 weeks). 上下求索's advantage is iOS requirement (14.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. 上下求索 sells 5 in-app purchases, starting at $3.99 per month. BisonAuthy asks for nothing beyond the download.

BisonAuthy ships an update every 3 weeks, 上下求索 every 6 weeks. The most recent releases landed on October 2, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | BisonAuthy | 上下求索 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 6 weeks |
| Monetization | — | Free |
| Size | 5 MB | 105 MB |
| Requires iOS | 17.0 | **14.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [B&A Group Limited](https://appshunter.io/developer/1821851165) | [亿有引力](https://appshunter.io/developer/1787379474) |

## What reviewers say

### BisonAuthy

[App page](https://appshunter.io/ios/app/bisonauthy/id6499211300)

**Features:** macOS Compatibility

**In-app purchases:** none


### 上下求索

[App page](https://appshunter.io/ios/app/ai/id6741800737)

This intelligent assistant supports voice, text, and image input for Q&A and inspiration. Explore bite-sized knowledge, generate unique photos with the Time Gallery, and engage in follow-up questions for deeper understanding.

**Highlights:** Voice, text, and image input, Follow-up questions, Extended reading content, Bite-sized Knowledge module, Time Gallery photo generation, Task list and result page

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AI Creation Monthly | $3.99 | per month |
| 50 张图片加量包 | $0.99 | one-time |
| 50 Coins | $0.99 | one-time |
| 170 Coins | $3.99 | one-time |
| 420 Coins | $9.99 | one-time |


## Frequently asked questions

### Is BisonAuthy free?

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

### Is 上下求索 free?

上下求索 is free to download, with in-app purchases available.

### Do BisonAuthy or 上下求索 have ads?

Neither BisonAuthy nor 上下求索 shows ads.

### Which is updated more often, BisonAuthy or 上下求索?

BisonAuthy ships an update every 3 weeks, and 上下求索 every 6 weeks. Most recently, BisonAuthy was updated on October 2, 2026 and 上下求索 on September 30, 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.*