# REF vs DoomLoop

The clearest difference is iOS requirement: DoomLoop at 15.0 against REF's 17.0. 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.

REF ships an update every 3 days, DoomLoop every 6 days. The most recent releases landed on October 5, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | REF | DoomLoop |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 6 days |
| Size | 6 MB | 4 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Amr Rashed](https://appshunter.io/developer/1864768976) | [Ryan Ebner](https://appshunter.io/developer/1896319552) |

## What reviewers say

### REF

[App page](https://appshunter.io/ios/app/ref-440-tuner/id6757130720)

**Features:** macOS Compatibility

**In-app purchases:** none


### DoomLoop

[App page](https://appshunter.io/ios/app/doomloop/id6766733624)

**In-app purchases:** none


## Frequently asked questions

### Is REF free?

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

### Is DoomLoop free?

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

### Do REF or DoomLoop have ads?

Neither REF nor DoomLoop shows ads.

### Which is updated more often, REF or DoomLoop?

REF ships an update every 3 days, and DoomLoop every 6 days. Most recently, REF was updated on October 5, 2026 and DoomLoop on October 3, 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.*