# Kelime Defteri vs Chemlab

The clearest difference is in-app purchases: Kelime Defteri at none against Chemlab's 2. Kelime Defteri also leads on iOS requirement (15.0 vs 18.0). Chemlab's advantage is update cadence (monthly vs every 65 months). On price, ads and device support there is nothing between them.

Both are free to download. Chemlab sells 2 one-off in-app purchases. Kelime Defteri asks for nothing beyond the download.

Kelime Defteri ships an update every 65 months, Chemlab monthly. The most recent releases landed on October 14, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Kelime Defteri | Chemlab |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 65 months | **Monthly** |
| Monetization | Free | — |
| Size | 17 MB | 9 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Parantez Teknoloji](https://appshunter.io/developer/1077669139) | [Volodumur Kolosovskiy](https://appshunter.io/developer/6791622341) |

## What reviewers say

### Kelime Defteri

[App page](https://appshunter.io/ios/app/kelime-defteri/id1552578182)

This app helps you learn English vocabulary effectively by letting you save, organize, and practice words with their meanings. It features pronunciation guides, smart repetition systems, and progress tracking to solidify your learning.

**Highlights:** Save English words and meanings, Organize and categorize vocabulary, Listen to pronunciations, Smart repetition system, Track daily goals and progress, Test knowledge with quizzes, Share word lists

**Features:** macOS Compatibility

**In-app purchases:** none


### Chemlab

[App page](https://appshunter.io/ios/app/chemlab/id6791622339)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AI Chemist Unlimited | $1.99 | one-time |
| Experiments Pack | $1.99 | one-time |


## Frequently asked questions

### Is Kelime Defteri free?

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

### Is Chemlab free?

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

### Do Kelime Defteri or Chemlab have ads?

Neither Kelime Defteri nor Chemlab shows ads.

### Which is updated more often, Kelime Defteri or Chemlab?

Kelime Defteri ships an update every 65 months, and Chemlab monthly. Most recently, Kelime Defteri was updated on October 14, 2026 and Chemlab on October 11, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*