# TIMMS Site Viewer vs ROLAVIScan

The clearest difference is update cadence: ROLAVIScan at every 2 weeks against TIMMS Site Viewer's every 6 months. TIMMS Site Viewer's advantage is iOS requirement (8.1 vs 18.6). On price, ads, in-app purchases and device support there is nothing between them.

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

TIMMS Site Viewer ships an update every 6 months, ROLAVIScan every 2 weeks. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | TIMMS Site Viewer | ROLAVIScan |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 2 weeks** |
| Size | 78 MB | 11 MB |
| Requires iOS | **8.1** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Trimble Inc.](https://appshunter.io/developer/322561665) | [Marco Herrera](https://appshunter.io/developer/6779786898) |

## What reviewers say

### TIMMS Site Viewer

[App page](https://appshunter.io/ios/app/timms-site-viewer/id1109956778)

**Features:** Vision Pro support

**In-app purchases:** none


### ROLAVIScan

[App page](https://appshunter.io/ios/app/rolaviscan/id6779786896)

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

**In-app purchases:** none


## Frequently asked questions

### Is TIMMS Site Viewer free?

TIMMS Site Viewer is free to download, with no in-app purchases.

### Is ROLAVIScan free?

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

### Do TIMMS Site Viewer or ROLAVIScan have ads?

Neither TIMMS Site Viewer nor ROLAVIScan shows ads.

### Which is updated more often, TIMMS Site Viewer or ROLAVIScan?

TIMMS Site Viewer ships an update every 6 months, and ROLAVIScan every 2 weeks. Most recently, TIMMS Site Viewer was updated on October 26, 2026 and ROLAVIScan on October 25, 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.*