# Chiffre vs ChunkFlow

The clearest difference is in-app purchases: Chiffre at none against ChunkFlow's 1. ChunkFlow's advantage is update cadence (every 2 days vs every 2 months) and iOS requirement (15.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. ChunkFlow sells 1 in-app purchase, starting at $4.99 per month. Chiffre asks for nothing beyond the download.

Chiffre ships an update every 2 months, ChunkFlow every 2 days. Both last shipped on September 9, 2026.

## The numbers

| Metric | Chiffre | ChunkFlow |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/chunkflow/id6795199051/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 days** |
| Monetization | — | Freemium |
| Size | 1 MB | 51 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [峥 张](https://appshunter.io/developer/1862645298) | [易欢 张](https://appshunter.io/developer/6794977153) |

## What reviewers say

### Chiffre

[App page](https://appshunter.io/ios/app/chiffre/id6757078975)

**Features:** macOS Compatibility

**In-app purchases:** none


### ChunkFlow

[App page](https://appshunter.io/ios/app/chunkflow/id6795199051)

Master French speaking by learning real-world expressions and sentence chunks. Understand context, pronunciation, and syntax to build fluency naturally. Review with flashcards and integrate learned content into your conversations.

**Highlights:** Chunk-learning method, Extract and understand real-world expressions, Syntax analysis and pronunciation practice, Flashcard review system, Contextual vocabulary lookup, Cyclical learning for retention

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ChunkFlow Pro | $4.99 | per month |


## Frequently asked questions

### Is Chiffre free?

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

### Is ChunkFlow free?

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

### Do Chiffre or ChunkFlow have ads?

Neither Chiffre nor ChunkFlow shows ads.

### Which is updated more often, Chiffre or ChunkFlow?

Chiffre ships an update every 2 months, and ChunkFlow every 2 days. Most recently, Chiffre was updated on September 9, 2026 and ChunkFlow on September 9, 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.*