# 知到. vs Celechron

The clearest difference is review sentiment: Celechron at 95% against 知到.'s 19%. Celechron also leads on rating (5.0 vs 1.2) and device support (4 vs 2). 知到.'s advantage is ratings volume (323 vs 9) and update cadence (every 3 weeks vs every 2 months). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Celechron holds the better App Store score, 5.0 against 1.2. That said, the two scores are not equally well evidenced: 知到. has 323 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 95% of Celechron's.

知到. ships an update every 3 weeks, Celechron every 2 months. The most recent releases landed on November 2, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | 知到. | Celechron |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.2 (323 ratings)](https://appshunter.io/ios/app/id1255358463/reviews) | **[5.0 (9 ratings)](https://appshunter.io/ios/app/celechron/id6477194529/reviews)** |
| Number of ratings | **323** | 9 |
| Positive reviews | 18.8% of reviews | **95.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Free | Free |
| Size | 394 MB | 27 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [上海卓越睿新数码科技有限公司](https://appshunter.io/developer/702650874) | [子捷 施](https://appshunter.io/developer/1727805912) |

## 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


### Celechron

[App page](https://appshunter.io/ios/app/celechron/id6477194529)

This app is a time management tool designed for Zhejiang University students. It offers features for task planning, timetable viewing, grade inquiries, and payment code display. It also includes desktop widgets for schedules and payment codes.

**Highlights:** Task planning, Timetable viewing, Grade inquiry, Payment code display, Desktop widgets

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is 知到. free?

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

### Is Celechron free?

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

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

Celechron is rated higher. 知到. averages 1.2 out of 5 from 323 ratings, while Celechron averages 5.0 from 9 ratings.

### Do 知到. or Celechron have ads?

Neither 知到. nor Celechron shows ads.

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

知到. ships an update every 3 weeks, and Celechron every 2 months. Most recently, 知到. was updated on November 2, 2026 and Celechron on October 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.*