# GramImage AI vs Zetamac problems

The clearest difference is in-app purchases: Zetamac problems at none against GramImage AI's 1. Zetamac problems also leads on update cadence (every 2 months vs every 10 months). GramImage AI's advantage is ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. GramImage AI sells 1 in-app purchase, starting at $4.99 per month. Zetamac problems asks for nothing beyond the download.

GramImage AI ships an update every 10 months, Zetamac problems every 2 months. The most recent releases landed on October 30, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | GramImage AI | Zetamac problems |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/zetamac-problems/id6743952737/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 10 months | **Every 2 months** |
| Monetization | — | Ad-supported |
| Size | 258 MB | 4 MB |
| Requires iOS | **15.6** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [masashi umetani](https://appshunter.io/developer/1768573992) | [Chhaya Patel](https://appshunter.io/developer/1736176770) |

## What reviewers say

### GramImage AI

[App page](https://appshunter.io/ios/app/gramimage-ai/id6686400148)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro プラン | $4.99 | per month |


### Zetamac problems

[App page](https://appshunter.io/ios/app/zetamac-problems/id6743952737)

Sharpen your math skills with daily practice problems. This app offers diverse problem types, customizable difficulty, and timed challenges to prepare for exams and interviews. Get instant feedback to improve your accuracy and speed.

**Highlights:** Diverse math problem types, Customizable number range, Timed practice challenges, Realistic quantitative simulations, Instant feedback on answers

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

**In-app purchases:** none


## Frequently asked questions

### Is GramImage AI free?

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

### Is Zetamac problems free?

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

### Do GramImage AI or Zetamac problems have ads?

Zetamac problems shows ads; GramImage AI does not.

### Which is updated more often, GramImage AI or Zetamac problems?

GramImage AI ships an update every 10 months, and Zetamac problems every 2 months. Most recently, GramImage AI was updated on October 30, 2026 and Zetamac problems on November 4, 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.*