# LDM Valves vs Euler Gamma

The clearest difference is update cadence: Euler Gamma at every 9 days against LDM Valves's every 5 months. LDM Valves's advantage is iOS requirement (15.3 vs 17.0). 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.

LDM Valves ships an update every 5 months, Euler Gamma every 9 days. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | LDM Valves | Euler Gamma |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 9 days** |
| Size | 37 MB | 14 MB |
| Requires iOS | **15.3** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [LDM, spol. s r.o.](https://appshunter.io/developer/1807390383) | [音 卢](https://appshunter.io/developer/1895433682) |

## What reviewers say

### LDM Valves

[App page](https://appshunter.io/ios/app/ldm-valves/id6744373442)

**Features:** macOS Compatibility

**In-app purchases:** none


### Euler Gamma

[App page](https://appshunter.io/ios/app/euler-gamma-ndt-calculator/id6772123721)

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

**In-app purchases:** none


## Frequently asked questions

### Is LDM Valves free?

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

### Is Euler Gamma free?

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

### Do LDM Valves or Euler Gamma have ads?

Neither LDM Valves nor Euler Gamma shows ads.

### Which is updated more often, LDM Valves or Euler Gamma?

LDM Valves ships an update every 5 months, and Euler Gamma every 9 days. Most recently, LDM Valves was updated on October 28, 2026 and Euler Gamma on October 25, 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.*