# Sensor Toolkit vs TopoLog

The clearest difference is in-app purchases: TopoLog at none against Sensor Toolkit's 4. Sensor Toolkit's advantage is device support (3 vs 1) and iOS requirement (15.6 vs 18.6). On price and ads there is nothing between them.

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

## The numbers

| Metric | Sensor Toolkit | TopoLog |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 3 weeks | — |
| Monetization | — | Ad-supported |
| Size | 54 MB | 8 MB |
| Requires iOS | **15.6** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [Dylan Calin](https://appshunter.io/developer/1832226530) | [Offline Music](https://appshunter.io/developer/1823656102) |

## What reviewers say

### 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 |


### TopoLog

[App page](https://appshunter.io/ios/app/topolog-live-team-gps-tracker/id6780429432)

This app provides privacy-first, automated GPS tracking and multi-sensor navigation for outdoor enthusiasts. It features intelligent, motion-triggered logging, a pro-grade altimeter, and a hardened compass, all while operating offline and without requiring user accounts.

**Highlights:** Footprint-driven automated tracking, Pro-grade altimeter & barometer, Hardened heading compass, Stateless team relay for location sharing, Indoor floor estimation, Adaptive footprint charts, 100% offline capability

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

**In-app purchases:** none


## Frequently asked questions

### Is Sensor Toolkit free?

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

### Is TopoLog free?

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

### Do Sensor Toolkit or TopoLog have ads?

Both Sensor Toolkit and TopoLog show 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.*