# CLOK by NTTU vs Flashcards

The clearest difference is in-app purchases: CLOK by NTTU at none against Flashcards's 3. CLOK by NTTU also leads on ads (none vs shown) and iOS requirement (11.0 vs 17.0). Flashcards's advantage is update cadence (every 3 days vs every 2 weeks). On price and device support there is nothing between them.

Both are free to download. Flashcards sells 3 in-app purchases, starting at $3.99 per month. CLOK by NTTU asks for nothing beyond the download.

CLOK by NTTU ships an update every 2 weeks, Flashcards every 3 days. Both last shipped on November 7, 2026.

## The numbers

| Metric | CLOK by NTTU | Flashcards |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[2.8 (4 ratings)](https://appshunter.io/ios/app/flashcards-learn-chinese/id6448208043/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 weeks | **Every 3 days** |
| Monetization | — | Free |
| Size | 64 MB | 128 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Foreknowledge CO., LTD.](https://appshunter.io/developer/1414102159) | [henri gil](https://appshunter.io/developer/498565852) |

## What reviewers say

### CLOK by NTTU

[App page](https://appshunter.io/ios/app/clok-by-nttu/id1561122134)

**Features:** macOS Compatibility

**In-app purchases:** none


### Flashcards

[App page](https://appshunter.io/ios/app/flashcards-learn-chinese/id6448208043)

Master Chinese vocabulary, pronunciation, and writing with interactive flashcards, listening exercises, and handwriting practice. Engage with a virtual coach and learn at your own pace through fun, game-like activities.

**Highlights:** Interactive flashcards for vocabulary, Listening comprehension exercises, Pronunciation practice, Handwriting exercises, Matching games, Virtual coach chat

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 MONTH PREMIUM | $3.99 | per month |
| 6 MONTHS PREMIUM | $7.99 | per 6 months |
| 1 YEAR PREMIUM | $12.99 | per year |


## Frequently asked questions

### Is CLOK by NTTU free?

CLOK by NTTU is free to download, with no in-app purchases.

### Is Flashcards free?

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

### Do CLOK by NTTU or Flashcards have ads?

Flashcards shows ads; CLOK by NTTU does not.

### Which is updated more often, CLOK by NTTU or Flashcards?

CLOK by NTTU ships an update every 2 weeks, and Flashcards every 3 days. Most recently, CLOK by NTTU was updated on November 7, 2026 and Flashcards on November 7, 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.*