# TIMMS Site Viewer vs Facility Maps

The clearest difference is update cadence: Facility Maps at every 6 days against TIMMS Site Viewer's every 6 months. TIMMS Site Viewer's advantage is iOS requirement (8.1 vs 11.0). 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, Facility Maps every 6 days. The most recent releases landed on September 23, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | TIMMS Site Viewer | Facility Maps |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 6 days** |
| Size | 78 MB | 78 MB |
| Requires iOS | **8.1** | 11.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Trimble Inc.](https://appshunter.io/developer/322561665) | [Viewstride LLC](https://appshunter.io/developer/1625912063) |

## 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


### Facility Maps

[App page](https://appshunter.io/ios/app/facility-maps-personal/id6478473021)

**Features:** macOS Compatibility

**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 Facility Maps free?

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

### Do TIMMS Site Viewer or Facility Maps have ads?

Neither TIMMS Site Viewer nor Facility Maps shows ads.

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

TIMMS Site Viewer ships an update every 6 months, and Facility Maps every 6 days. Most recently, TIMMS Site Viewer was updated on September 23, 2026 and Facility Maps on September 15, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*