# ISTQB Model vs Pro Scrum Master III Exam Prep

The clearest difference is update cadence: ISTQB Model at every 2 months against Pro Scrum Master III Exam Prep's every 8 months. Pro Scrum Master III Exam Prep's advantage is iOS requirement (15.1 vs 17.2). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. ISTQB Model sells 2 in-app purchases, starting at $9.99 per month and Pro Scrum Master III Exam Prep sells 5 in-app purchases, starting at $8.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ISTQB Model ships an update every 2 months, Pro Scrum Master III Exam Prep every 8 months. The most recent releases landed on October 27, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | ISTQB Model | Pro Scrum Master III Exam Prep |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 8 months |
| Size | 9 MB | 50 MB |
| Requires iOS | 17.2 | **15.1** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Cargo Teleport Inc](https://appshunter.io/developer/1761832181) | [Exam Prep OU](https://appshunter.io/developer/1689642184) |

## What reviewers say

### ISTQB Model

[App page](https://appshunter.io/ios/app/istqb-model-based-tester/id6738401973)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium monthly subscription | $9.99 | per month |
| Lifetime version | $19.99 | one-time |


### Pro Scrum Master III Exam Prep

[App page](https://appshunter.io/ios/app/pro-scrum-master-iii-exam-prep/id6744003145)

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PSM 3 Weekly Full Access | $8.99 | per 7 days |
| PSM 3 Monthly Full Access | $24.99 | per month |
| PSM 3 Monthly Full Access | $34.99 | per month |
| PSM 3 Quarterly Full Access | $55.99 | per 3 months |
| PSM 3 Quarterly Full Access | $59.99 | per 3 months |


## Frequently asked questions

### Is ISTQB Model free?

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

### Is Pro Scrum Master III Exam Prep free?

Pro Scrum Master III Exam Prep is free to download, with in-app purchases available.

### Do ISTQB Model or Pro Scrum Master III Exam Prep have ads?

Neither ISTQB Model nor Pro Scrum Master III Exam Prep shows ads.

### Which is updated more often, ISTQB Model or Pro Scrum Master III Exam Prep?

ISTQB Model ships an update every 2 months, and Pro Scrum Master III Exam Prep every 8 months. Most recently, ISTQB Model was updated on October 27, 2026 and Pro Scrum Master III Exam Prep 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.*