# SJ Chmod Calculator vs Presentation Master 2

The clearest difference is in-app purchases: Presentation Master 2 at none against SJ Chmod Calculator's 5. Presentation Master 2 also leads on ads (none vs shown) and update cadence (every 3 days vs weekly). On price and device support there is nothing between them.

Both are free to download. SJ Chmod Calculator sells 5 one-off in-app purchases. Presentation Master 2 asks for nothing beyond the download.

SJ Chmod Calculator ships an update weekly, Presentation Master 2 every 3 days. The most recent releases landed on October 9, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | SJ Chmod Calculator | Presentation Master 2 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Weekly | **Every 3 days** |
| Size | 3 MB | 28 MB |
| Requires iOS | 16.0 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Stephane JAILLIARD](https://appshunter.io/developer/1749751077) | [Taavi Ruebenhagen](https://appshunter.io/developer/1785933388) |

## What reviewers say

### SJ Chmod Calculator

[App page](https://appshunter.io/ios/app/sj-chmod-calculator/id6504128434)

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| A coffee | $0.99 | one-time |
| A cookie | $2.99 | one-time |
| A lemon tart | $4.99 | one-time |
| No ads | $4.99 | one-time |
| A pizza | $9.99 | one-time |


### Presentation Master 2

[App page](https://appshunter.io/ios/app/presentation-master-2/id6739542508)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SJ Chmod Calculator free?

SJ Chmod Calculator is free to download, with in-app purchases available.

### Is Presentation Master 2 free?

Presentation Master 2 is free to download, with no in-app purchases.

### Do SJ Chmod Calculator or Presentation Master 2 have ads?

SJ Chmod Calculator shows ads; Presentation Master 2 does not.

### Which is updated more often, SJ Chmod Calculator or Presentation Master 2?

SJ Chmod Calculator ships an update weekly, and Presentation Master 2 every 3 days. Most recently, SJ Chmod Calculator was updated on October 9, 2026 and Presentation Master 2 on October 2, 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.*