sumFX vs Guitar FX Powerage
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
sumFX
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.
- 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
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sumFX is a modular multi-FX processor for Mac/PC and iOS. Designed with simplicity in mind, to help keep you focused on the music and the sum of your efforts. Packed with 8 high quality FX modules and an available 8 slots, each loaded with Wet/Dry control, Global Wet/Dry, and 2 LFOs per slot, creating new unique sounds is quick and easy. 50+ cross-platform slot & chain presets are included to get you to any sound you need quickly and we’ve packed in an easy to use pre/post waveform view to help keep you focused on the result of your FX. Modules: -syncDynamics - Multimode dynamic FX with BPM sync attack/release (Noise Gate, Expander, Compressor, Limiter) -stereoFilter - Stereo filter with link or individual channel controls (LPF12, HPF12, BPF12, LPF24, HPF24, BPF24, Notch, & Formant options). -variMod - Multimode modulation FX with stereo offset (Chorus, Flanger, Vibrato, Phaser, Tremolo, & Auto Pan) -EQuator - Full high quality EQ module (3 Parametric Bands, High/Low Shelf, & HPF/LPF). -frostReverb - Multi-Mode (Original, Plate, Spring, Room) Stereo Reverb. -bucketDelay - Stereo Analog Style Delay with individual channel control. -variPitch - Stereo Pitch Shifter with 3X Modes (Doubler, Harmonizer, & Full Control) -powerPhase - Multimode Saturation, Utility Gain In/Out, Mono Maker, Channel msDelay, & Phase inverter.
Guitar FX Powerage
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Unleash the true power of Guitar FX Processor. Whether you’re a seasoned musician or just starting out, Guitar FX elevates your music to new heights. With an array of customizable effects, from Reverb and Delay to Overdrive and Modulation, this effects processor is designed to inspire and empower your creativity. Features: * Seamless Integration: Effortlessly connects with your iPad, Audio Interfaces, Guitar and Amps setups. * User-Friendly interface: Intuitive controls and a bright display make it easy to dial in your perfect Classic tones. * Basic Effects: Most used effects to deliver pristine studio-grade tone quality for every performance. Perfect for live gigs, studio recording or practice sessions, the Guitar FX processor is your ultimate companion on your music journey. it support any Audio Interface with Lightning or USB-C connection (Like I-Rig all models and others) Download now and transform your Guitar Playing experience!
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | sumFX | Guitar FX Powerage |
|---|---|---|
| Price | $9.99 | $7.99 — better |
| Rating | 4.4 (12 ratings) — better | — |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 12 — better | — |
| Update frequency | Every 6 months — better | Every 8 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 12.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 44 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | OSC Audio | Luis Alberto Ruiz |
In-app purchases
sumFX
No in-app purchases
Guitar FX Powerage
No in-app purchases
Questions
Is sumFX free?
Is Guitar FX Powerage free?
Do sumFX or Guitar FX Powerage have ads?
Which is updated more often, sumFX or Guitar FX Powerage?
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