# sumFX vs Guitar FX Powerage

The clearest difference is price: Guitar FX Powerage at $7.99 against sumFX's $9.99. sumFX's advantage is iOS requirement (12.0 vs 17.0). On update cadence, ads, in-app purchases and device support there is nothing between them.

sumFX costs $9.99 and Guitar FX Powerage $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.

sumFX ships an update every 6 months, Guitar FX Powerage every 8 months. The most recent releases landed on November 7, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | sumFX | Guitar FX Powerage |
| --- | --- | --- |
| Price | $9.99 | **$7.99** |
| Rating | **[4.4 (12 ratings)](https://appshunter.io/ios/app/sumfx/id6450494474/reviews)** | — |
| Number of ratings | **12** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 months** | Every 8 months |
| Monetization | Paid | — |
| Size | 44 MB | 3 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [OSC Audio](https://appshunter.io/developer/1693533681) | [Luis Alberto Ruiz](https://appshunter.io/developer/1773681646) |

## What reviewers say

### sumFX

[App page](https://appshunter.io/ios/app/sumfx/id6450494474)

This app is a versatile audio effects processor for musicians. It offers a modular design with multiple high-quality FX modules and customizable slots, allowing for quick creation of unique sounds. Focus on your music with intuitive controls and visual feedback.

**Highlights:** Modular multi-FX processor, 8 high-quality FX modules, 8 FX slots with Wet/Dry control, 2 LFOs per slot, 50+ cross-platform presets, Pre/post waveform view

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

**In-app purchases:** none


### Guitar FX Powerage

[App page](https://appshunter.io/ios/app/guitar-fx-powerage/id6736888827)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is sumFX free?

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

### Is Guitar FX Powerage free?

Guitar FX Powerage costs $7.99, with no in-app purchases.

### Do sumFX or Guitar FX Powerage have ads?

Neither sumFX nor Guitar FX Powerage shows ads.

### Which is updated more often, sumFX or Guitar FX Powerage?

sumFX ships an update every 6 months, and Guitar FX Powerage every 8 months. Most recently, sumFX was updated on November 7, 2026 and Guitar FX Powerage on October 30, 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.*