# Crown Defender vs Digit Invader Calculator

The clearest difference is update cadence: Crown Defender at daily against Digit Invader Calculator's weekly. Crown Defender also leads on iOS requirement (13.0 vs 17.6). On price, ads, 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.

Crown Defender ships an update daily, Digit Invader Calculator weekly. The most recent releases landed on October 2, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Crown Defender | Digit Invader Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (6 ratings)](https://appshunter.io/ios/app/digit-invader-calculator/id6743176325/reviews)** |
| Number of ratings | — | **6** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Daily** | Weekly |
| Monetization | — | Free |
| Size | 8 MB | 5 MB |
| Requires iOS | **13.0** | 17.6 |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [swipe GmbH](https://appshunter.io/developer/1487089734) | [Daniel Fu Keung Kwan](https://appshunter.io/developer/1801804499) |

## What reviewers say

### Crown Defender

[App page](https://appshunter.io/ios/app/crown-defender/id6741389283)

**In-app purchases:** none


### Digit Invader Calculator

[App page](https://appshunter.io/ios/app/digit-invader-calculator/id6743176325)

This app combines a functional calculator with a retro arcade game inspired by classic calculator interfaces. It offers automatic game saving, a high score list, and multitasking support on iPads. A scaled-down version is also available for Apple Watch.

**Highlights:** Retro calculator game, Basic calculator functions, Automatic game save, High score list, iPad Stage Manager support, Apple Watch version

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Crown Defender free?

Crown Defender is free to download, with no in-app purchases.

### Is Digit Invader Calculator free?

Digit Invader Calculator is free to download, with no in-app purchases.

### Do Crown Defender or Digit Invader Calculator have ads?

Neither Crown Defender nor Digit Invader Calculator shows ads.

### Which is updated more often, Crown Defender or Digit Invader Calculator?

Crown Defender ships an update daily, and Digit Invader Calculator weekly. Most recently, Crown Defender was updated on October 2, 2026 and Digit Invader Calculator on October 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.*