sumFX vs Gorilla
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.
Gorilla
Create professional bass tones with this comprehensive suite. It offers multiple preamps, a 3-way splitter with compression and saturation, an octaver, and custom IR loading. Includes artist presets and a built-in tuner for a complete bass experience.
- Three distinct preamps
- 3-way splitter with compressor/saturator
- Octaver for sound depth
- Custom IR loading
- Artist-curated presets
- Built-in tuner
- AUv3 support
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Meet the Gorilla Bass Studio Suite, the ultimate tool for bassists of all genres with midi control. This app is packed with everything you need to create pro-level bass tones effortlessly. Three Powerful Preamps: *Green: Clean, warm sound or fat tube distortion *Yellow: Modern rock sound *Orange: Powerful bass and punchy mids. 3-way splitter with independent compressor and saturator for detailed tone shaping. Octaver Functionality: Built-in octaver for creating a massive wall of sound, ideal for solo performances or adding depth to your band's sound. User-Friendly Interface: Quick access to essential controls with detailed customization options for advanced users. Custom IRs and Mixing Capabilities: Use built-in Aurora IRs or load your own for unparalleled sound customization. Standalone Version and AUv3 Support: Enjoy quick and easy setup with standalone and AUv3 formats for seamless integration with iOS. Preset Packs by Renowned Artists: Play within seconds using presets curated by musicians and producers like Erik Arko, Gergo Hajer, and Henning Pauly. State Recall and Tuner: Try new tones without losing previous settings and keep your bass perfectly tuned with a fast, accurate tuner.
Screenshots
Verdict
The clearest difference is rating: Gorilla at 4.9 against sumFX's 4.4. Gorilla also leads on update cadence (every 2 months vs every 6 months) and review sentiment (67% vs 50%). On ratings volume, ads, in-app purchases and monetization model 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 Gorilla $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Gorilla holds the better App Store score, 4.9 against 4.4. Both are backed by a comparable volume of ratings — 12 and 8 respectively. Written reviews point the same way: 50% of sumFX's written reviews are positive against 67% of Gorilla's.
sumFX ships an update every 6 months, Gorilla every 2 months. The most recent releases landed on November 7, 2026 and November 4, 2026 respectively.
| Parameter | sumFX | Gorilla |
|---|---|---|
| Price | $9.99 | $6.99 — better |
| Rating | 4.4 (12 ratings) | 4.9 (8 ratings) — better |
| Positive reviews | 50.0% of reviews | 66.7% of reviews — better |
| Number of ratings | 12 — better | 8 |
| Update frequency | Every 6 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 | 12.0 |
| Further details — not scored | ||
| Size | 44 MB | 25 MB |
| Age rating | 4+ | 4+ |
| Developer | OSC Audio | Aurora DSP |
Customer experience
sumFX
Gorilla
In-app purchases
sumFX
No in-app purchases
Gorilla
No in-app purchases
Questions
Is sumFX free?
Is Gorilla free?
Which has better reviews, sumFX or Gorilla?
Do sumFX or Gorilla have ads?
Which is updated more often, sumFX or Gorilla?
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