# GT Graph vs Topos

The clearest difference is iOS requirement: GT Graph at 18.0 against Topos's 26.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. GT Graph sells 1 one-off in-app purchase and Topos sells 2 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

GT Graph ships an update every 8 days, Topos every 5 days. Both last shipped on October 31, 2026.

## The numbers

| Metric | GT Graph | Topos |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/topos-ai-memory-palace/id6758406420/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 8 days | **Every 5 days** |
| Monetization | — | Freemium |
| Size | 1 MB | 8 MB |
| Requires iOS | **18.0** | 26.0 |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Gennaro Eduardo Tangari](https://appshunter.io/developer/1616502345) | [Anthem Labs](https://appshunter.io/developer/1883829488) |

## 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 |


### Topos

[App page](https://appshunter.io/ios/app/topos-ai-memory-palace/id6758406420)

This app helps you retain information long-term by combining AI-powered flashcard generation with ancient memory techniques like the Memory Palace and spaced repetition. It offers a distraction-free learning environment designed for efficient, permanent understanding.

**Highlights:** AI flashcard generation from text, Memory Palace technique for spatial recall, Spaced repetition (SM-2 algorithm), Customizable memory palaces, Offline study capabilities, Distraction-free design, Progress tracking and statistics

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| topos Pro | $5.99 | per month |
| topos Pro | $49.99 | per year |


## Frequently asked questions

### Is GT Graph free?

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

### Is Topos free?

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

### Do GT Graph or Topos have ads?

Neither GT Graph nor Topos shows ads.

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

GT Graph ships an update every 8 days, and Topos every 5 days. Most recently, GT Graph was updated on October 31, 2026 and Topos on October 31, 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.*