# ASPR vs Sensor Toolkit

The clearest difference is in-app purchases: ASPR at none against Sensor Toolkit's 4. ASPR also leads on ads (none vs shown) and iOS requirement (13.0 vs 15.6). On price, update cadence and device support there is nothing between them.

Both are free to download. Sensor Toolkit sells 4 one-off in-app purchases. ASPR asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on September 29, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | ASPR | Sensor Toolkit |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Size | 56 MB | 54 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 12+ |
| Developer | [Shenzhen Amet Technology Co.,Ltd.](https://appshunter.io/developer/1812592857) | [Dylan Calin](https://appshunter.io/developer/1832226530) |

## What reviewers say

### ASPR

[App page](https://appshunter.io/ios/app/aspr/id6745502342)

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

**In-app purchases:** none


### Sensor Toolkit

[App page](https://appshunter.io/ios/app/sensor-toolkit-smart-tools/id6758297155)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coffee Tip | $1.00 | one-time |
| SensorKit Pro | $1.99 | one-time |
| Pizza Tip | $2.00 | one-time |
| Diamond Tip | $5.00 | one-time |


## Frequently asked questions

### Is ASPR free?

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

### Is Sensor Toolkit free?

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

### Do ASPR or Sensor Toolkit have ads?

Sensor Toolkit shows ads; ASPR does not.

### Which is updated more often, ASPR or Sensor Toolkit?

ASPR ships an update every 3 weeks, and Sensor Toolkit every 3 weeks. Most recently, ASPR was updated on September 29, 2026 and Sensor Toolkit on September 30, 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.*