# Expert at disciplining vs One

The clearest difference is in-app purchases: One at none against Expert at disciplining's 2. One also leads on iOS requirement (13.0 vs 15.0). Expert at disciplining's advantage is update cadence (every 5 weeks vs every 5 months). On price, ads and device support there is nothing between them.

Both are free to download. Expert at disciplining sells 2 one-off in-app purchases. One asks for nothing beyond the download.

Expert at disciplining ships an update every 5 weeks, One every 5 months. The most recent releases landed on November 3, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Expert at disciplining | One |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/expert-at-disciplining/id1463044676/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Every 5 weeks** | Every 5 months |
| Monetization | Free with in-app purchases | — |
| Size | 210 MB | 138 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [TAKAYUKI MASUDA](https://appshunter.io/developer/1463044615) | [RieveldtGames](https://appshunter.io/developer/1648036319) |

## What reviewers say

### Expert at disciplining

[App page](https://appshunter.io/ios/app/expert-at-disciplining/id1463044676)

Train your dog to overcome troublesome behaviors like food-stealing and escaping. Observe your dog's habits and use items and actions to solve problems and build a closer bond. Features 30 unique scenarios and mini-games.

**Highlights:** Train your dog successfully, Solve troublesome behaviors, Observe dog's habits and gestures, Use items and actions, 30 troublesome behaviors, Full of mini games

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 20 hearts | $0.99 | one-time |
| Tenacious heart | $1.99 | one-time |


### One

[App page](https://appshunter.io/ios/app/one-stroke-squares/id6741795949)

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

**In-app purchases:** none


## Frequently asked questions

### Is Expert at disciplining free?

Expert at disciplining is free to download, with in-app purchases available.

### Is One free?

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

### Do Expert at disciplining or One have ads?

Both Expert at disciplining and One show ads.

### Which is updated more often, Expert at disciplining or One?

Expert at disciplining ships an update every 5 weeks, and One every 5 months. Most recently, Expert at disciplining was updated on November 3, 2026 and One on October 28, 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.*