# Mobisys MSB App vs Justrite STUD

Mobisys MSB App and Justrite STUD are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on December 3, 2025 and September 23, 2026 respectively.

## The numbers

| Metric | Mobisys MSB App | Justrite STUD |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Size | 13 MB | 29 MB |
| Requires iOS | 9.0 | 9.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Mobisys GmbH](https://appshunter.io/developer/404546262) | [JUSTRITE MANUFACTURING COMPANY, L.L.C.](https://appshunter.io/developer/1574523993) |

## What reviewers say

### Mobisys MSB App

[App page](https://appshunter.io/ios/app/mobisys-msb-app/id404546259)

**In-app purchases:** none


### Justrite STUD

[App page](https://appshunter.io/ios/app/justrite-stud-e-survey/id1574523991)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Mobisys MSB App free?

Mobisys MSB App is free to download, with no in-app purchases.

### Is Justrite STUD free?

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

### Do Mobisys MSB App or Justrite STUD have ads?

Neither Mobisys MSB App nor Justrite STUD shows ads.

### Which is updated more often, Mobisys MSB App or Justrite STUD?

Mobisys MSB App ships an update every 2 months, and Justrite STUD every 2 months. Most recently, Mobisys MSB App was updated on December 3, 2025 and Justrite STUD on September 23, 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.*