# Digit Detective vs Katakana Examples

The clearest difference is update cadence: Katakana Examples at every 3 months against Digit Detective's every 39 months. Digit Detective's advantage is iOS requirement (17.0 vs 26.0). 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.

Digit Detective ships an update every 39 months, Katakana Examples every 3 months. The most recent releases landed on November 11, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | Digit Detective | Katakana Examples |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 39 months | **Every 3 months** |
| Size | 32 MB | 18 MB |
| Requires iOS | **17.0** | 26.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [BrainTrain Inc.](https://appshunter.io/developer/584469134) | [Zoli Udvar](https://appshunter.io/developer/729430704) |

## What reviewers say

### Digit Detective

[App page](https://appshunter.io/ios/app/digit-detective-memory-train/id1211833573)

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

**In-app purchases:** none


### Katakana Examples

[App page](https://appshunter.io/ios/app/katakana-examples/id6751439536)

**In-app purchases:** none


## Frequently asked questions

### Is Digit Detective free?

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

### Is Katakana Examples free?

Katakana Examples is free to download, with no in-app purchases.

### Do Digit Detective or Katakana Examples have ads?

Neither Digit Detective nor Katakana Examples shows ads.

### Which is updated more often, Digit Detective or Katakana Examples?

Digit Detective ships an update every 39 months, and Katakana Examples every 3 months. Most recently, Digit Detective was updated on November 11, 2026 and Katakana Examples on November 8, 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.*