# TIMMS Site Viewer vs ICIDO

The clearest difference is update cadence: ICIDO at every 8 days against TIMMS Site Viewer's every 6 months. TIMMS Site Viewer's advantage is device support (3 vs 1) and iOS requirement (8.1 vs 16.0). On price, 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.

TIMMS Site Viewer ships an update every 6 months, ICIDO every 8 days. The most recent releases landed on October 19, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | TIMMS Site Viewer | ICIDO |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 8 days** |
| Size | 78 MB | 6 MB |
| Requires iOS | **8.1** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Trimble Inc.](https://appshunter.io/developer/322561665) | [Fab Lab Connect](https://appshunter.io/developer/1476251780) |

## 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


### ICIDO

[App page](https://appshunter.io/ios/app/icido/id6787655497)

**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 ICIDO free?

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

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

Neither TIMMS Site Viewer nor ICIDO shows ads.

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

TIMMS Site Viewer ships an update every 6 months, and ICIDO every 8 days. Most recently, TIMMS Site Viewer was updated on October 19, 2026 and ICIDO on October 14, 2026.

---

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