# GT Graph vs FlashZen

The clearest difference is in-app purchases: FlashZen at none against GT Graph's 1. FlashZen also leads on iOS requirement (15.1 vs 18.0). GT Graph's advantage is ads (none vs shown). On price, update cadence and device support there is nothing between them.

Both are free to download. GT Graph sells 1 one-off in-app purchase. FlashZen asks for nothing beyond the download.

GT Graph ships an update every 8 days, FlashZen every 9 days. The most recent releases landed on September 7, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | GT Graph | FlashZen |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/flashzen-flashcards/id6760035270/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 8 days** | Every 9 days |
| Monetization | — | Ad-supported |
| Size | 1 MB | 29 MB |
| Requires iOS | 18.0 | **15.1** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Gennaro Eduardo Tangari](https://appshunter.io/developer/1616502345) | [Baptiste Fehrenbach](https://appshunter.io/developer/1257553869) |

## What reviewers say

### GT Graph

[App page](https://appshunter.io/ios/app/gt-graph/id6757393417)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| GT Graph In-App Purchase | $0.99 | one-time |


### FlashZen

[App page](https://appshunter.io/ios/app/flashzen-flashcards/id6760035270)

This app helps you learn vocabulary and build memory through active recall and spaced repetition. It offers a clean interface, allows custom definitions, and generates practice sentences with corrections. It's designed for efficient, focused study.

**Highlights:** Spaced repetition system, 800+ high-frequency English words, Custom definitions and translations, Sentence generation with corrections, Clean flashcard interface, Import custom decks

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

**In-app purchases:** none


## Frequently asked questions

### Is GT Graph free?

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

### Is FlashZen free?

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

### Do GT Graph or FlashZen have ads?

FlashZen shows ads; GT Graph does not.

### Which is updated more often, GT Graph or FlashZen?

GT Graph ships an update every 8 days, and FlashZen every 9 days. Most recently, GT Graph was updated on September 7, 2026 and FlashZen on September 14, 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.*