# SignatureDYN vs LogSynth

The clearest difference is price: SignatureDYN at $5.99 against LogSynth's $9.99. SignatureDYN also leads on iOS requirement (15.0 vs 18.0). On update cadence, ads, in-app purchases and device support there is nothing between them.

SignatureDYN costs $5.99 and LogSynth $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on October 8, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | SignatureDYN | LogSynth |
| --- | --- | --- |
| Price | **$5.99** | $9.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 weeks | Every 2 weeks |
| Size | 8 MB | 22 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Antonio Sorin TASU](https://appshunter.io/developer/1883473854) | [SEAN IAN HALENWOOD](https://appshunter.io/developer/1896371669) |

## What reviewers say

### SignatureDYN

[App page](https://appshunter.io/ios/app/signaturedyn/id6774496784)

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

**In-app purchases:** none


### LogSynth

[App page](https://appshunter.io/ios/app/logsynth/id6792552386)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SignatureDYN free?

SignatureDYN costs $5.99, with no in-app purchases.

### Is LogSynth free?

LogSynth costs $9.99, with no in-app purchases.

### Do SignatureDYN or LogSynth have ads?

Neither SignatureDYN nor LogSynth shows ads.

### Which is updated more often, SignatureDYN or LogSynth?

SignatureDYN ships an update every 2 weeks, and LogSynth every 2 weeks. Most recently, SignatureDYN was updated on October 8, 2026 and LogSynth on October 31, 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.*