# StampIt! vs Shift Calendar

The clearest difference is in-app purchases: Shift Calendar at none against StampIt!'s 2. Shift Calendar also leads on update cadence (every 3 weeks vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. StampIt! sells 2 in-app purchases, starting at $0.99 per month. Shift Calendar asks for nothing beyond the download.

StampIt! ships an update every 2 months, Shift Calendar every 3 weeks. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | StampIt! | Shift Calendar |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 88.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 57 MB | 12 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [DAIKI YUASA](https://appshunter.io/developer/1632691655) | [Vu Trong](https://appshunter.io/developer/1878635735) |

## What reviewers say

### StampIt!

[App page](https://appshunter.io/ios/app/stampit-habit-formed/id6670320389)

This app helps you achieve goals and build habits with a fun sticker-collecting approach. Choose between stamp card or calendar tracking, and set custom notifications to stay on track. Unlock exclusive designs with a premium subscription.

**Highlights:** Goal achievement, Habit formation, Stamp card tracking, Calendar tracking, Customizable notifications, Premium design options

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| プレミアムプラン | $0.99 | per month |
| Premium Plan | $5.99 | one-time |


### Shift Calendar

[App page](https://appshunter.io/ios/app/shift-calendar-shift-planner/id6760978159)

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

**In-app purchases:** none


## Frequently asked questions

### Is StampIt! free?

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

### Is Shift Calendar free?

Shift Calendar is free to download, with no in-app purchases.

### Do StampIt! or Shift Calendar have ads?

Neither StampIt! nor Shift Calendar shows ads.

### Which is updated more often, StampIt! or Shift Calendar?

StampIt! ships an update every 2 months, and Shift Calendar every 3 weeks. Most recently, StampIt! was updated on November 4, 2026 and Shift Calendar 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.*