# TempoSync vs STEP Viewer

The clearest difference is in-app purchases: STEP Viewer at none against TempoSync's 3. STEP Viewer also leads on iOS requirement (13.0 vs 26.1). On price, ads and device support there is nothing between them.

Both are free to download. TempoSync sells 3 in-app purchases, starting at $5.99 per 7 days. STEP Viewer asks for nothing beyond the download.

## The numbers

| Metric | TempoSync | STEP Viewer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/step-viewer/id6756539299/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | — | Every 5 days |
| Monetization | — | Free |
| Size | 5 MB | 61 MB |
| Requires iOS | 26.1 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Frank Hellwig](https://appshunter.io/developer/1842954924) | [Smart Cube Labs Co., Ltd.](https://appshunter.io/developer/1456342688) |

## What reviewers say

### TempoSync

[App page](https://appshunter.io/ios/app/temposync/id6755908688)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TempoSync Pro (Weekly) | $5.99 | per 7 days |
| TempoSync Pro (Monthly) | $17.99 | per month |
| TempoSync Pro (Yearly) | $89.99 | per year |


### STEP Viewer

[App page](https://appshunter.io/ios/app/step-viewer/id6756539299)

View and interact with 3D CAD files directly on your mobile device. Measure dimensions, rotate, zoom, and save models in a common format without needing desktop software.

**Highlights:** Open STEP files from file manager, 3D model measurement tools, Six fixed views, Pinch to zoom, pan, and rotate, Save as GLB, Progress indicator for large files, Multilingual support

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

**In-app purchases:** none


## Frequently asked questions

### Is TempoSync free?

TempoSync is free to download, with in-app purchases available.

### Is STEP Viewer free?

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

### Do TempoSync or STEP Viewer have ads?

Neither TempoSync nor STEP Viewer shows ads.

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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.*