# TROVIS 55Pro vs LogMemorizer

The clearest difference is update cadence: LogMemorizer at every 3 weeks against TROVIS 55Pro's every 8 months. TROVIS 55Pro's advantage is iOS requirement (9.0 vs 13.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

TROVIS 55Pro ships an update every 8 months, LogMemorizer every 3 weeks. The most recent releases landed on May 17, 2026 and August 28, 2026 respectively.

## The numbers

| Metric | TROVIS 55Pro | LogMemorizer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 3 weeks** |
| Size | 23 MB | 40 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [KT-Elektronik, Klaucke und Partner GmbH](https://appshunter.io/developer/943003350) | [Schaller Messtechnik GmbH](https://appshunter.io/developer/1798242776) |

## What reviewers say

### TROVIS 55Pro

[App page](https://appshunter.io/ios/app/trovis-55pro/id943003351)

**Features:** macOS Compatibility

**In-app purchases:** none


### LogMemorizer

[App page](https://appshunter.io/ios/app/logmemorizer/id6755107868)

**In-app purchases:** none


## Frequently asked questions

### Is TROVIS 55Pro free?

TROVIS 55Pro is free to download, with no in-app purchases.

### Is LogMemorizer free?

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

### Do TROVIS 55Pro or LogMemorizer have ads?

Neither TROVIS 55Pro nor LogMemorizer shows ads.

### Which is updated more often, TROVIS 55Pro or LogMemorizer?

TROVIS 55Pro ships an update every 8 months, and LogMemorizer every 3 weeks. Most recently, TROVIS 55Pro was updated on May 17, 2026 and LogMemorizer on August 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.*