# Codex4 - For Serious Study — user reviews

> 2 indexed App Store user reviews of Codex4 by Jonas Richner, rated 5.00/5 from 2 ratings.

- Source: https://appshunter.io/ios/app/codex4-for-serious-study/id6743228019/reviews
- App overview in markdown: https://appshunter.io/ios/app/codex4-for-serious-study/id6743228019.md
- Rating breakdown: 5★ 2 · 4★ 0 · 3★ 0 · 2★ 0 · 1★ 0

## Most critical reviews (2 lowest-rated)

### 1/5 — Not good

*2026-03-12*

Voice Problem

### 5/5 — The best language learning app ever! I've tried them all.

*2025-09-15*

So many apps do nothing to further language learning. This one does everything right. I started with zero knowledge and the way it shows you words in sentence format is priceless. You learn words in context and they stick. Flash cards never worked for me, EVER. This is GOLD and highly recommended.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-21.*