# CORE40 AMSTERDAM vs Double Shift

The clearest difference is ads: CORE40 AMSTERDAM at none against Double Shift's shown. Double Shift's advantage is iOS requirement (14.0 vs 16.0). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 5 weeks. The most recent releases landed on October 9, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | CORE40 AMSTERDAM | Double Shift |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 5 weeks | Every 5 weeks |
| Size | 195 MB | 123 MB |
| Requires iOS | 16.0 | **14.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [CORE40 CENTRUM B.V.](https://appshunter.io/developer/1487030741) | [The Turn Holding BV](https://appshunter.io/developer/1621271915) |

## What reviewers say

### CORE40 AMSTERDAM

[App page](https://appshunter.io/ios/app/core40-amsterdam/id1487030742)

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

**In-app purchases:** none


### Double Shift

[App page](https://appshunter.io/ios/app/double-shift/id1621271913)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is CORE40 AMSTERDAM free?

CORE40 AMSTERDAM is free to download, with no in-app purchases.

### Is Double Shift free?

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

### Do CORE40 AMSTERDAM or Double Shift have ads?

Double Shift shows ads; CORE40 AMSTERDAM does not.

### Which is updated more often, CORE40 AMSTERDAM or Double Shift?

CORE40 AMSTERDAM ships an update every 5 weeks, and Double Shift every 5 weeks. Most recently, CORE40 AMSTERDAM was updated on October 9, 2026 and Double Shift on October 3, 2026.

---

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