# 知到. vs BufferMind

The clearest difference is review sentiment: BufferMind at 100% against 知到.'s 19%. BufferMind also leads on rating (5.0 vs 1.2) and update cadence (every 6 days vs every 3 weeks). 知到.'s advantage is in-app purchases (none vs 5) and ratings volume (327 vs 9). On price, ads and device support there is nothing between them.

Both are free to download. BufferMind sells 5 in-app purchases, starting at $9.99 per month. 知到. asks for nothing beyond the download.

BufferMind holds the better App Store score, 5.0 against 1.2. That said, the two scores are not equally well evidenced: 知到. has 327 ratings behind it against 9, so its average is the more settled of the two. Written reviews point the same way: 19% of 知到.'s written reviews are positive against 100% of BufferMind's.

知到. ships an update every 3 weeks, BufferMind every 6 days. The most recent releases landed on November 6, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | 知到. | BufferMind |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.2 (327 ratings)](https://appshunter.io/ios/app/id1255358463/reviews) | **[5.0 (9 ratings)](https://appshunter.io/ios/app/buffermind-ai-translator/id6760977587/reviews)** |
| Number of ratings | **327** | 9 |
| Positive reviews | 18.8% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 6 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 394 MB | 67 MB |
| Requires iOS | **14.0** | 16.2 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [上海卓越睿新数码科技有限公司](https://appshunter.io/developer/702650874) | [ZECHANG HE](https://appshunter.io/developer/1887108961) |

## What reviewers say

### 知到.

[App page](https://appshunter.io/ios/app/id1255358463)

Access a vast library of high-quality courses from over 2000 universities worldwide. Learn from experts and dedicate time daily to enrich your knowledge and personal growth. This platform aims to democratize educational resources.

**Highlights:** Access to 2000+ university courses, Expert-led educational content, Daily learning modules, Social sharing of educational resources, Personal growth and development focus

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Provides access to learning resources
- 👍 Offers a platform for academic exchange
- 👍 Free to download and access content
- 👍 Useful for supplementary learning
- 👍 Good for utilizing spare time for learning

**What reviewers complain about**

- 👎 Forced updates
- 👎 Poor server performance
- 👎 Frequent crashes and freezes
- 👎 Bad user interface and experience
- 👎 Inconvenient login and verification process

**Reported bugs**

- App crashes frequently
- App freezes or becomes unresponsive
- Video playback issues (no sound, auto-pause, content not counting)
- Login and verification process is problematic
- Exams end prematurely

**Requested features**

- Develop an iPad/tablet version
- Improve server stability and performance
- Offer a delayed update option
- Allow users to choose whether to rate courses
- Implement a proper rating system for courses


### BufferMind

[App page](https://appshunter.io/ios/app/buffermind-ai-translator/id6760977587)

This app provides real-time lecture transcription and translation for students. It listens, transcribes, and translates lectures live, with an AI assistant to answer questions about the content. Users can save, search, and organize their lecture history.

**Highlights:** Real-time transcription, Instant translation, AI teaching assistant, Searchable lecture history, Live activity on Lock Screen, Push-to-talk translated conversation

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $9.99 | per month |
| Pro Semester | $19.99 | per 3 months |
| Max Monthly | $19.99 | per month |
| Max Semester | $44.99 | per 3 months |
| Recording Top-up (10 hours) | $3.99 | one-time |


## Frequently asked questions

### Is 知到. free?

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

### Is BufferMind free?

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

### Which has better reviews, 知到. or BufferMind?

BufferMind is rated higher. 知到. averages 1.2 out of 5 from 327 ratings, while BufferMind averages 5.0 from 9 ratings.

### Do 知到. or BufferMind have ads?

Neither 知到. nor BufferMind shows ads.

### Which is updated more often, 知到. or BufferMind?

知到. ships an update every 3 weeks, and BufferMind every 6 days. Most recently, 知到. was updated on November 6, 2026 and BufferMind on October 31, 2026.

---

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