# Catzumi vs Stimly

The clearest difference is ads: Stimly at none against Catzumi's shown. Stimly also leads on update cadence (every 11 days vs every 6 months) and iOS requirement (16.4 vs 18.6). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Catzumi sells 3 one-off in-app purchases and Stimly sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Catzumi ships an update every 6 months, Stimly every 11 days. The most recent releases landed on November 4, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Catzumi | Stimly |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (4 ratings)](https://appshunter.io/ios/app/catzumi/id6642671240/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 6 months | **Every 11 days** |
| Monetization | Free with in-app purchases | — |
| Size | 31 MB | 62 MB |
| Requires iOS | 18.6 | **16.4** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Peter Yaacoub](https://appshunter.io/developer/1330097505) | [Zen Media Mateusz Stys](https://appshunter.io/developer/6772148668) |

## What reviewers say

### Catzumi

[App page](https://appshunter.io/ios/app/catzumi/id6642671240)

This app transforms your daily walks into a game by caring for a virtual cat. Earn rewards and unlock new looks for your feline friend as you reach your step goals, promoting a healthier lifestyle.

**Highlights:** Gamified walking to build habits, Virtual pet care with every step, Evolve and customize your cat, Unlock new skins and looks, Motivation for consistent walking

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Money | $4.99 | one-time |
| Money | $7.99 | one-time |
| Money | $14.99 | one-time |


### Stimly

[App page](https://appshunter.io/ios/app/stimly-caffeine-tracker/id6772148666)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Stimly Pro Monthly | $4.99 | per month |
| Stimly Pro Yearly | $39.99 | per year |
| Stimly Pro Lifetime | $29.99 | one-time |


## Frequently asked questions

### Is Catzumi free?

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

### Is Stimly free?

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

### Do Catzumi or Stimly have ads?

Catzumi shows ads; Stimly does not.

### Which is updated more often, Catzumi or Stimly?

Catzumi ships an update every 6 months, and Stimly every 11 days. Most recently, Catzumi was updated on November 4, 2026 and Stimly on November 5, 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.*