# OMEC Open vs SIGMA LUME

The clearest difference is iOS requirement: SIGMA LUME at 11.0 against OMEC Open's 13.0. 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.

OMEC Open ships an update every 5 months, SIGMA LUME every 4 months. The most recent releases landed on November 3, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | OMEC Open | SIGMA LUME |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 4 months** |
| Size | 27 MB | 27 MB |
| Requires iOS | 13.0 | **11.0** |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [1Control](https://appshunter.io/developer/1044212789) | [ID&A S.r.l.](https://appshunter.io/developer/1446283055) |

## What reviewers say

### OMEC Open

[App page](https://appshunter.io/ios/app/omec-open/id1672000823)

**In-app purchases:** none


### SIGMA LUME

[App page](https://appshunter.io/ios/app/sigma-lume/id6746123995)

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

**In-app purchases:** none


## Frequently asked questions

### Is OMEC Open free?

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

### Is SIGMA LUME free?

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

### Do OMEC Open or SIGMA LUME have ads?

Neither OMEC Open nor SIGMA LUME shows ads.

### Which is updated more often, OMEC Open or SIGMA LUME?

OMEC Open ships an update every 5 months, and SIGMA LUME every 4 months. Most recently, OMEC Open was updated on November 3, 2026 and SIGMA LUME on September 18, 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.*