# Marvin Altman vs ChompChart

The clearest difference is in-app purchases: Marvin Altman at none against ChompChart's 2. Marvin Altman also leads on iOS requirement (15.1 vs 18.0). ChompChart's advantage is update cadence (daily vs every 7 months). On price, ads and device support there is nothing between them.

Both are free to download. ChompChart sells 2 in-app purchases, starting at $4.99 per month. Marvin Altman asks for nothing beyond the download.

Marvin Altman ships an update every 7 months, ChompChart daily. The most recent releases landed on September 24, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | Marvin Altman | ChompChart |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Daily** |
| Size | 26 MB | 2 MB |
| Requires iOS | **15.1** | 18.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Antaris](https://appshunter.io/developer/1585177811) | [JACOB LAWRENCE WYERS](https://appshunter.io/developer/1895767739) |

## What reviewers say

### Marvin Altman

[App page](https://appshunter.io/ios/app/marvin-altman/id6520039242)

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

**In-app purchases:** none


### ChompChart

[App page](https://appshunter.io/ios/app/chompchart/id6778830263)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ChompChart Plus (Monthly) | $4.99 | per month |
| ChompChart Plus — Yearly | $39.99 | per year |


## Frequently asked questions

### Is Marvin Altman free?

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

### Is ChompChart free?

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

### Do Marvin Altman or ChompChart have ads?

Neither Marvin Altman nor ChompChart shows ads.

### Which is updated more often, Marvin Altman or ChompChart?

Marvin Altman ships an update every 7 months, and ChompChart daily. Most recently, Marvin Altman was updated on September 24, 2026 and ChompChart on September 25, 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.*