# Prothelis vs Senso4s

The clearest difference is review sentiment: Prothelis at 55% against Senso4s's 21%. On price, update cadence, 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.

Both ship on a similar rhythm, roughly every 6 weeks. The most recent releases landed on June 1, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Prothelis | Senso4s |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/prothelis/id1077727750/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | **55.0% of reviews** | 20.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | Every 6 weeks |
| Monetization | Free | Free |
| Size | 27 MB | 91 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Reinhold Busch Prothelis e. K.](https://appshunter.io/developer/1775894977) | [Senso4s d.o.o.](https://appshunter.io/developer/1447741982) |

## What reviewers say

### Prothelis

[App page](https://appshunter.io/ios/app/prothelis/id1077727750)

This app provides reliable escort protection and location tracking for individuals and valuables. It allows users to monitor the real-time location and movement history of trackers, set up virtual fences, and receive alerts for speed or temperature changes. Notifications can be delivered via push messages or phone calls.

**Highlights:** Track unlimited devices, Create virtual geofences, Speed limit alerts, Temperature monitoring, Push and phone call notifications, Navigation to tracker

**Features:** macOS Compatibility

**In-app purchases:** none


### Senso4s

[App page](https://appshunter.io/ios/app/senso4s/id1447741983)

Monitor your daily gas consumption in cylinders with this app, connecting to a smart device for real-time levels and historical data. It accurately predicts when you'll run out of gas and allows sharing access with others for enhanced safety and convenience.

**Highlights:** Real-time gas level monitoring, Graphical history of gas consumption, Accurate gas run-out prediction, Connect multiple devices, Share device access with others, User-friendly interface

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

**In-app purchases:** none


## Frequently asked questions

### Is Prothelis free?

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

### Is Senso4s free?

Senso4s is free to download, with no in-app purchases.

### Do Prothelis or Senso4s have ads?

Neither Prothelis nor Senso4s shows ads.

### Which is updated more often, Prothelis or Senso4s?

Prothelis ships an update every 6 weeks, and Senso4s every 6 weeks. Most recently, Prothelis was updated on June 1, 2026 and Senso4s on September 19, 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.*