# Sensor Data Pro vs Type D Viewer

The clearest difference is in-app purchases: Type D Viewer at none against Sensor Data Pro's 3. Type D Viewer also leads on iOS requirement (18.0 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. Sensor Data Pro sells 3 in-app purchases, starting at $1.99 per month. Type D Viewer asks for nothing beyond the download.

## The numbers

| Metric | Sensor Data Pro | Type D Viewer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 9 months | — |
| Size | 20 MB | 2 MB |
| Requires iOS | 26.0 | **18.0** |
| Devices | **iPhone, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Simon Bogh Holding ApS](https://appshunter.io/developer/776835874) | [Patrick Foley](https://appshunter.io/developer/1853473025) |

## What reviewers say

### Sensor Data Pro

[App page](https://appshunter.io/ios/app/sensor-data-pro/id912802741)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro+ Monthly | $1.99 | per month |
| Pro+ Quarterly | $4.99 | per 3 months |
| Pro+ Yearly | $14.99 | per year |


### Type D Viewer

[App page](https://appshunter.io/ios/app/type-d-viewer/id6755620952)

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

**In-app purchases:** none


## Frequently asked questions

### Is Sensor Data Pro free?

Sensor Data Pro is free to download, with in-app purchases available.

### Is Type D Viewer free?

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

### Do Sensor Data Pro or Type D Viewer have ads?

Neither Sensor Data Pro nor Type D 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.*