# Stamp it vs Cat's Study

The clearest difference is in-app purchases: Stamp it at none against Cat's Study's 6. Stamp it also leads on ads (none vs shown) and update cadence (every 2 days vs every 5 days). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Cat's Study sells 6 in-app purchases, starting at $2.49 per month. Stamp it asks for nothing beyond the download.

Stamp it ships an update every 2 days, Cat's Study every 5 days. The most recent releases landed on October 28, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Stamp it | Cat's Study |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 2 days** | Every 5 days |
| Monetization | — | Free with in-app purchases |
| Size | 8 MB | 186 MB |
| Requires iOS | 17.0 | **16.6** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [HeberekeKomachi](https://appshunter.io/developer/1868863528) | [Lo-Fi Labs Inc.](https://appshunter.io/developer/6796905768) |

## What reviewers say

### Stamp it

[App page](https://appshunter.io/ios/app/stamp-it/id6757840549)

**Features:** macOS Compatibility

**In-app purchases:** none


### Cat's Study

[App page](https://appshunter.io/ios/app/cats-study-focus-timer/id6816829300)

Enhance your focus with a charming virtual cat companion. This app offers customizable Pomodoro timers, task planning, and progress tracking. Personalize your study space with various themes and ambient sounds, and connect with friends for collaborative focus sessions.

**Highlights:** Customizable Pomodoro and stopwatch timers, Task planning and scheduling, Focus time tracking and streaks, Ambient soundscapes and room themes, Social focus sessions with friends, Cat and room customization

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Cat's Study Pro Monthly | $2.49 | per month |
| Cat's Study Pro Annual | $14.49 | per year |
| 100 Coins | $1.49 | one-time |
| 500 Coins | $6.49 | one-time |
| 1,000 Coins | $9.99 | one-time |
| Cat's Study Pro Lifetime | $33.49 | one-time |


## Frequently asked questions

### Is Stamp it free?

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

### Is Cat's Study free?

Cat's Study is free to download, with in-app purchases available.

### Do Stamp it or Cat's Study have ads?

Cat's Study shows ads; Stamp it does not.

### Which is updated more often, Stamp it or Cat's Study?

Stamp it ships an update every 2 days, and Cat's Study every 5 days. Most recently, Stamp it was updated on October 28, 2026 and Cat's Study on October 29, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*