# I vs 豆知声

The clearest difference is in-app purchases: I at none against 豆知声's 10. I also leads on iOS requirement (12.0 vs 16). 豆知声's advantage is update cadence (every 2 weeks vs every 6 months). On price, ads and device support there is nothing between them.

Both are free to download. 豆知声 sells 10 one-off in-app purchases. I asks for nothing beyond the download.

I ships an update every 6 months, 豆知声 every 2 weeks. The most recent releases landed on October 27, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | I | 豆知声 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[2.5 (2 ratings)](https://appshunter.io/ios/app/id6745197519/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 2 weeks** |
| Size | 28 MB | 215 MB |
| Requires iOS | **12.0** | 16 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [GAMMA SISTEMI SAS DI PEDRAZZOLI ROBERTO E C.](https://appshunter.io/developer/1686810315) | [Hangzhou zhidou Technology Co., Ltd.](https://appshunter.io/developer/1148463678) |

## What reviewers say

### I

[App page](https://appshunter.io/ios/app/i-bat/id6449299088)

**Features:** macOS Compatibility

**In-app purchases:** none


### 豆知声

[App page](https://appshunter.io/ios/app/id6745197519)

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Audio Transcription 60 mins | $1.49 | one-time |
| Starter (Monthly) | $5.00 | one-time |
| Audio Transcription 600 mins | $11.49 | one-time |
| Pro (Monthly) | $15.00 | one-time |
| Unlimited (Monthly) | $22.49 | one-time |
| Annual Translation Subscription | $24.99 | one-time |
| Starter (Annual) | $30.00 | one-time |
| 2-Year Translation Subscription | $39.99 | one-time |
| Pro (Annual) | $90.00 | one-time |
| Unlimited (Annual) | $134.99 | one-time |


## Frequently asked questions

### Is I free?

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

### Is 豆知声 free?

豆知声 is free to download, with in-app purchases available.

### Do I or 豆知声 have ads?

Neither I nor 豆知声 shows ads.

### Which is updated more often, I or 豆知声?

I ships an update every 6 months, and 豆知声 every 2 weeks. Most recently, I was updated on October 27, 2026 and 豆知声 on November 5, 2026.

---

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