# Codex4 vs Flashy Vocabulary

The clearest difference is update cadence: Codex4 at every 4 days against Flashy Vocabulary's every 9 days. On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Codex4 sells 4 in-app purchases, starting at $12.99 per month and Flashy Vocabulary sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for Codex4 against 5.0 for Flashy Vocabulary. Both are backed by a comparable volume of ratings — 2 and 2 respectively.

Codex4 ships an update every 4 days, Flashy Vocabulary every 9 days. The most recent releases landed on September 17, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | Codex4 | Flashy Vocabulary |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/codex4-for-serious-study/id6743228019/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/flashy-vocabulary/id6748480857/reviews) |
| Number of ratings | 2 | 2 |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 9 days |
| Monetization | Freemium | Free with in-app purchases |
| Size | 52 MB | 44 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Jonas Richner](https://appshunter.io/developer/1801973188) | [Gabriela Garcia](https://appshunter.io/developer/1825932693) |

## What reviewers say

### Codex4

[App page](https://appshunter.io/ios/app/codex4-for-serious-study/id6743228019)

Build a usable vocabulary for your job, studies, or hobbies with smart, spaced repetition reviews. Master real word usage and track your progress with clear statistics. Designed for serious learners with a clean interface and no gimmicks.

**Highlights:** Add custom words from any text, Spaced repetition reviews (FSRS), Master word lemmas and conjugations, Clear progress statistics, Automatic word extraction, Data export and offline access

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Basic | $12.99 | per month |
| Pro | $14.00 | per month |
| Basic Yearly | $69.99 | per year |
| Pro Yearly | $85.00 | per year |


### Flashy Vocabulary

[App page](https://appshunter.io/ios/app/flashy-vocabulary/id6748480857)

Master French vocabulary with AI-powered flashcards. Learn real-world expressions, slang, and idioms with cultural context and smart review tools. Build a daily habit and track your progress to speak French naturally.

**Highlights:** AI-powered flashcards, Native-style examples, Cultural context and slang, Smart review tools, Progress tracking, Community word feed

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Flashy Monthly | $2.99 | per month |
| Flashy Premium | $9.99 | per month |


## Frequently asked questions

### Is Codex4 free?

Codex4 is free to download, with in-app purchases available.

### Is Flashy Vocabulary free?

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

### Which has better reviews, Codex4 or Flashy Vocabulary?

Codex4 and Flashy Vocabulary are both rated 5.0 out of 5 on the App Store, from 2 and 2 ratings respectively.

### Do Codex4 or Flashy Vocabulary have ads?

Neither Codex4 nor Flashy Vocabulary shows ads.

### Which is updated more often, Codex4 or Flashy Vocabulary?

Codex4 ships an update every 4 days, and Flashy Vocabulary every 9 days. Most recently, Codex4 was updated on September 17, 2026 and Flashy Vocabulary on September 8, 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.*