Comparison

FAC Bandit vs sumFX

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

FAC Bandit

This app is a multiband audio effect processor that splits your audio into three frequency bands. Each band can be processed independently with its own effect, allowing for detailed sound sculpting and unique sonic transformations. It offers built-in effects and expandable options for creative audio manipulation.

Highlights
  • 3-Band multi effects processor
  • Independent effects per band
  • Built-in Saturator, Lofi, Ring Modulator
  • Expandable effects via In-App Purchase
  • Frequency isolator equalizer
  • Adjustable crossover points with slope control
  • Separate Dry/Wet output controls
Read full description

• 3-Band multi effects processor • Each band provides its own effect with mix blending control • Comes with built-in effects: Saturator, Lofi and Ring Modulator • Extendable via In-App purchase in Bandit store: Delay and Reverb • Frequency isolator equaliser (DJ style filter) • Two adjustable crossover points for low and high bands with slope up to 48dB • Separate Dry/Wet output controls • Suitable for any situation, going from subtle to drastic change • Multi-outs support, route each band to separate channels in your DAW • Advanced Responsive Design, portrait and landscape views • AuV3 for iOS (iPad/iPhone) FAC Bandit is a multiband audio effect that splits the audio signal into three bands of frequencies according two adjustable crossover points. Each band is processed independently by its own effect processor and the outputs are then recombined to produce the final effect. Each frequency range is altered with different effects and settings that won't sound the same if applied to the full frequency range. As you have probably realized, FAC Bandit is a wonderful and powerful sound design tool for designers who want to sculpt new personal, exciting and outstanding sounds. Either in a subtle way, without compromising the original tone, or in a more drastic way. - AuV3 and Standalone App - To use multiple outputs, you need a host able to provide additional output busses to the AuV3 plug-in The documentation is available at fredantoncorvest.com/FAC_Bandit.html

About

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.

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
Read full description

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.

Screenshots

FAC Bandit4 screens
sumFX3 screens

Verdict

The call

The clearest difference is review sentiment: FAC Bandit at 90% against sumFX's 55%. FAC Bandit also leads on rating (4.9 vs 4.4) and ratings volume (57 vs 12). sumFX's advantage is in-app purchases (none vs 5). On price, update cadence, ads 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

CostPrice · In-app purchases · Ads · Monetization

FAC Bandit costs $9.99 and sumFX $9.99 up front. FAC Bandit sells 5 one-off in-app purchases. sumFX asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

FAC Bandit holds the better App Store score, 4.9 against 4.4. Both are backed by a comparable volume of ratings — 57 and 12 respectively. Written reviews point the same way: 90% of FAC Bandit's written reviews are positive against 55% of sumFX's.

UpkeepUpdate frequency

FAC Bandit ships an update every 4 months, sumFX every 6 months. The most recent releases landed on September 18, 2026 and September 7, 2026 respectively.

Scorecard5 real differences · 5 level
FAC Bandit versus sumFX: the parameters behind the verdict, then further details
ParameterFAC BanditsumFX
Price$9.99$9.99
Rating4.9 (57 ratings) — better4.4 (12 ratings)
Positive reviews90.2% of reviews — better54.5% of reviews
Number of ratings57 — better12
Update frequencyEvery 4 months — betterEvery 6 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.012.0 — better
Further details — not scored
Size3 MB44 MB
Age rating4+4+
DeveloperFrederic CorvestOSC Audio

Customer experience

FAC Bandit

All ratings57 ratings
Positive96.5%
Neutral0.0%
Negative3.5%
Written reviews41 reviews
Positive90.2%
Neutral0.0%
Negative9.8%

sumFX

All ratings12 ratings
Positive83.3%
Neutral8.3%
Negative8.3%
Written reviews11 reviews
Positive54.5%
Neutral18.2%
Negative27.3%

In-app purchases

5 purchases

FAC Bandit

One-time5
  • Multiband Delays$1.99
  • Multiband Reverbs$1.99
  • Small Tip$1.99
Show 2 more
  • Medium Tip$4.99
  • Large Tip$14.99
None

sumFX

No in-app purchases

Questions

Is FAC Bandit free?
FAC Bandit costs $9.99, and also offers in-app purchases.
Is sumFX free?
sumFX costs $9.99, with no in-app purchases.
Which has better reviews, FAC Bandit or sumFX?
FAC Bandit is rated higher. FAC Bandit averages 4.9 out of 5 from 57 ratings, while sumFX averages 4.4 from 12 ratings.
Do FAC Bandit or sumFX have ads?
Neither FAC Bandit nor sumFX shows ads.
Which is updated more often, FAC Bandit or sumFX?
FAC Bandit ships an update every 4 months, and sumFX every 6 months. Most recently, FAC Bandit was updated on September 18, 2026 and sumFX on September 7, 2026.

Other comparisons