# System Design Refresher vs SysMLv2 Model User Cert Prep

The clearest difference is iOS requirement: SysMLv2 Model User Cert Prep at 17.0 against System Design Refresher's 26.2. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

System Design Refresher ships an update monthly, SysMLv2 Model User Cert Prep every 3 weeks. The most recent releases landed on September 30, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | System Design Refresher | SysMLv2 Model User Cert Prep |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sysmlv2-model-user-cert-prep/id6787816646/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | — | Free |
| Size | 18 MB | 4 MB |
| Requires iOS | 26.2 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Saurabh Sharma](https://appshunter.io/developer/1883599017) | [JONAS VALTER RADSTROM](https://appshunter.io/developer/6787816648) |

## What reviewers say

### System Design Refresher

[App page](https://appshunter.io/ios/app/system-design-refresher/id6760277935)

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

**In-app purchases:** none


### SysMLv2 Model User Cert Prep

[App page](https://appshunter.io/ios/app/sysmlv2-model-user-cert-prep/id6787816646)

Prepare for the OMG SysML v2 Model User certification exam with a comprehensive study aid. It offers over 500 practice questions, including diagram-based ones, with detailed explanations and offline access. Track your progress and take timed mock exams to ensure readiness.

**Highlights:** 584 validated practice questions, 70 diagram-based questions, Answer explanations with official links, Practice by topic or full mock exam, Accuracy tracking and performance streaks, Offline functionality, Dark mode support

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is System Design Refresher free?

System Design Refresher is free to download, with no in-app purchases.

### Is SysMLv2 Model User Cert Prep free?

SysMLv2 Model User Cert Prep is free to download, with no in-app purchases.

### Do System Design Refresher or SysMLv2 Model User Cert Prep have ads?

Neither System Design Refresher nor SysMLv2 Model User Cert Prep shows ads.

### Which is updated more often, System Design Refresher or SysMLv2 Model User Cert Prep?

System Design Refresher ships an update monthly, and SysMLv2 Model User Cert Prep every 3 weeks. Most recently, System Design Refresher was updated on September 30, 2026 and SysMLv2 Model User Cert Prep on October 10, 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.*