# PDCA Success vs OTKPAMA

The clearest difference is in-app purchases: PDCA Success at none against OTKPAMA's 5. PDCA Success also leads on update cadence (every 3 weeks vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. OTKPAMA sells 5 in-app purchases, starting at $19.99 per year. PDCA Success asks for nothing beyond the download.

PDCA Success ships an update every 3 weeks, OTKPAMA every 2 months. The most recent releases landed on October 25, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | PDCA Success | OTKPAMA |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Size | 108 MB | 92 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [PDCA INNOVATION](https://appshunter.io/developer/1823042208) | [OTK EDUCATION TECHNOLOGY](https://appshunter.io/developer/1828833215) |

## What reviewers say

### PDCA Success

[App page](https://appshunter.io/ios/app/pdca-success/id6747833832)

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

**In-app purchases:** none


### OTKPAMA

[App page](https://appshunter.io/ios/app/otkpama/id6749109629)

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 CHILD | $19.99 | per year |
| 2 CHILD | $29.99 | per year |
| 4 CHILD | $39.99 | per year |
| 3 CHILD | $39.99 | per year |
| 5 CHILD | $49.99 | per year |


## Frequently asked questions

### Is PDCA Success free?

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

### Is OTKPAMA free?

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

### Do PDCA Success or OTKPAMA have ads?

Neither PDCA Success nor OTKPAMA shows ads.

### Which is updated more often, PDCA Success or OTKPAMA?

PDCA Success ships an update every 3 weeks, and OTKPAMA every 2 months. Most recently, PDCA Success was updated on October 25, 2026 and OTKPAMA on October 30, 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.*