# Prothelis vs Keep in Memory

The clearest difference is price: Prothelis at Free against Keep in Memory's $0.99. Prothelis also leads on device support (3 vs 1) and iOS requirement (15.0 vs 26.2). Keep in Memory's advantage is update cadence (every 3 days vs every 6 weeks). On ads and in-app purchases there is nothing between them.

Prothelis is free to download; Keep in Memory costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Prothelis ships an update every 6 weeks, Keep in Memory every 3 days. The most recent releases landed on October 16, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | Prothelis | Keep in Memory |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/prothelis/id1077727750/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 40.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 3 days** |
| Monetization | Free | — |
| Size | 27 MB | 1 MB |
| Requires iOS | **15.0** | 26.2 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Reinhold Busch Prothelis e. K.](https://appshunter.io/developer/1775894977) | [MUSTAFA KEMAL DEMIR](https://appshunter.io/developer/1883646654) |

## 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


### Keep in Memory

[App page](https://appshunter.io/ios/app/keep-in-memory/id6760288596)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Prothelis free?

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

### Is Keep in Memory free?

Keep in Memory costs $0.99, with no in-app purchases.

### Do Prothelis or Keep in Memory have ads?

Neither Prothelis nor Keep in Memory shows ads.

### Which is updated more often, Prothelis or Keep in Memory?

Prothelis ships an update every 6 weeks, and Keep in Memory every 3 days. Most recently, Prothelis was updated on October 16, 2026 and Keep in Memory on September 28, 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.*