# Opus LF vs EF Qatar

The clearest difference is update cadence: EF Qatar at every 5 days against Opus LF's every 3 months. 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.

Opus LF ships an update every 3 months, EF Qatar every 5 days. The most recent releases landed on September 8, 2026 and March 2, 2026 respectively.

## The numbers

| Metric | Opus LF | EF Qatar |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 5 days** |
| Size | 82 MB | 39 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Amigo Systems AB](https://appshunter.io/developer/1299663460) | [Anvin Info System](https://appshunter.io/developer/1486762551) |

## What reviewers say

### Opus LF

[App page](https://appshunter.io/ios/app/opus-lf/id1247772215)

**Features:** macOS Compatibility

**In-app purchases:** none


### EF Qatar

[App page](https://appshunter.io/ios/app/ef-qatar/id1522888343)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Opus LF free?

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

### Is EF Qatar free?

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

### Do Opus LF or EF Qatar have ads?

Neither Opus LF nor EF Qatar shows ads.

### Which is updated more often, Opus LF or EF Qatar?

Opus LF ships an update every 3 months, and EF Qatar every 5 days. Most recently, Opus LF was updated on September 8, 2026 and EF Qatar on March 2, 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.*