# Playing Prague vs Calc Ninja

The clearest difference is in-app purchases: Calc Ninja at none against Playing Prague's 2. Playing Prague's advantage is ads (none vs shown) and update cadence (every 4 days vs monthly). On price there is nothing between them.

Both are free to download. Playing Prague sells 2 one-off in-app purchases. Calc Ninja asks for nothing beyond the download.

Playing Prague ships an update every 4 days, Calc Ninja monthly. The most recent releases landed on October 14, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Playing Prague | Calc Ninja |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (5 ratings)](https://appshunter.io/ios/app/playing-prague/id6742446809/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 4 days** | Monthly |
| Monetization | Free | — |
| Size | 276 MB | 118 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone |
| Age rating | 4+ | 9+ |
| Developer | [Charles Games s.r.o.](https://appshunter.io/developer/1512771915) | [kotaro yamada](https://appshunter.io/developer/1193903506) |

## What reviewers say

### Playing Prague

[App page](https://appshunter.io/ios/app/playing-prague/id6742446809)

A relaxing puzzle game where you bring Prague to life by matching cards featuring ancient symbols. Uncover iconic landmarks and historical figures as you progress through handcrafted levels, celebrating the city's rich cultural heritage.

**Highlights:** Relaxing puzzle gameplay, Iconic Prague landmarks, Historical personalities, City building elements, Logical pattern composition, Hand-crafted levels

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Extra levels: Bells & Unicorns | $3.99 | one-time |
| Extra levels: Boats & Pears | $3.99 | one-time |


### Calc Ninja

[App page](https://appshunter.io/ios/app/calc-ninja-mental-math-games/id6784948949)

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

**In-app purchases:** none


## Frequently asked questions

### Is Playing Prague free?

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

### Is Calc Ninja free?

Calc Ninja is free to download, with no in-app purchases.

### Do Playing Prague or Calc Ninja have ads?

Calc Ninja shows ads; Playing Prague does not.

### Which is updated more often, Playing Prague or Calc Ninja?

Playing Prague ships an update every 4 days, and Calc Ninja monthly. Most recently, Playing Prague was updated on October 14, 2026 and Calc Ninja on October 13, 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.*