# Devplay vs Katsuyou Drill

The clearest difference is in-app purchases: Devplay at none against Katsuyou Drill's 1. Devplay also leads on ads (none vs shown) and iOS requirement (13.0 vs 15.0). Katsuyou Drill's advantage is update cadence (weekly vs every 3 months). On price and device support there is nothing between them.

Both are free to download. Katsuyou Drill sells 1 one-off in-app purchase. Devplay asks for nothing beyond the download.

Devplay ships an update every 3 months, Katsuyou Drill weekly. The most recent releases landed on November 12, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | Devplay | Katsuyou Drill |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Weekly** |
| Size | 49 MB | 43 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [The Members](https://appshunter.io/developer/1653824858) | [Ming Fang](https://appshunter.io/developer/1885120342) |

## What reviewers say

### Devplay

[App page](https://appshunter.io/ios/app/devplay/id6446906662)

**Features:** macOS Compatibility

**In-app purchases:** none


### Katsuyou Drill

[App page](https://appshunter.io/ios/app/katsuyou-drill/id6769468622)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Katsuyou Drill Premium (Lifetime) | $1.99 | one-time |


## Frequently asked questions

### Is Devplay free?

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

### Is Katsuyou Drill free?

Katsuyou Drill is free to download, with in-app purchases available.

### Do Devplay or Katsuyou Drill have ads?

Katsuyou Drill shows ads; Devplay does not.

### Which is updated more often, Devplay or Katsuyou Drill?

Devplay ships an update every 3 months, and Katsuyou Drill weekly. Most recently, Devplay was updated on November 12, 2026 and Katsuyou Drill on November 9, 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.*