Comparison

sumFX vs WoodValvet

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

Head to head
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.

About

WoodValvet

This audio effect app emulates tube saturation with multiple stages, offering extensive control over drive, tube types, and circuit configurations. It features advanced filtering, modulation, and output processing for detailed sound shaping.

Highlights
  • 3 tube stages with individual drive control
  • Selectable tube types per stage
  • Series/parallel stage configuration
  • Input band filter with selectable slope
  • LFO modulation for drive and filter
  • Side chain input for drive modulation
  • Visual harmonic generation representation
Features
Read full description

WoodValvet is a tube emulated saturator with extra features : - has 3 tube stages each with their own “Drive”control. - each stage can be set to a different tube type (ECC82, …). - stage 2 & 3 can be set in series or in parallel to create different harmonics. - stage 1 & 2 are class A circuits, stage 3 is a class AB circuit. - an input band filter allows to add harmonics on the selected band only. - has out-of-band gain control - filter has selectable slope (12 .. 48 dB/oct) - a post tube out lowpass filter allows to reduce the higher harmonics. - a “Constant Level” setting matches the output level with the input level. - has an LFO to modulate the drive and filter settings. - side chain input can modulate the drive settings (increase or duck mode). - has an “Auto Gain Input” mode to automatically bring quiet signals into range. - has a Stereo spread control. - has a brick-wall limiter on output - has a DC blocking output filter - has an output phase switch. - has a visual representation of the generated harmonics. - has oversampling (1 .. 8) - has an extra inter modulation control for extra distortion.

Screenshots

sumFX3 screens
WoodValvet2 screens

Verdict

The call

The clearest difference is review sentiment: sumFX at 55% against WoodValvet's 0%. sumFX also leads on price ($9.99 vs $13.99). WoodValvet's advantage is rating (5.0 vs 4.4) and update cadence (fortnightly vs every 6 months). 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

CostPrice · In-app purchases · Ads · Monetization

sumFX costs $9.99 and WoodValvet $13.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

WoodValvet holds the better App Store score, 5.0 against 4.4. Both are backed by a comparable volume of ratings — 12 and 7 respectively. Written reviews complicate that: 55% of sumFX's written reviews are positive against 0% of WoodValvet's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

sumFX ships an update every 6 months, WoodValvet fortnightly. The most recent releases landed on September 7, 2026 and September 8, 2026 respectively.

Scorecard4 real differences · 6 level
sumFX versus WoodValvet: the parameters behind the verdict, then further details
ParametersumFXWoodValvet
Price$9.99 — better$13.99
Rating4.4 (12 ratings)5.0 (7 ratings) — better
Positive reviews54.5% of reviews — better0.0% of reviews
Number of ratings12 — better7
Update frequencyEvery 6 monthsFortnightly — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.011.4 — better
Further details — not scored
Size44 MB13 MB
Age rating4+4+
DeveloperOSC AudioWoodman's Immaculate Maple Syrup Studio

Customer experience

sumFX

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

WoodValvet

All ratings7 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

sumFX

No in-app purchases

None

WoodValvet

No in-app purchases

Questions

Is sumFX free?
sumFX costs $9.99, with no in-app purchases.
Is WoodValvet free?
WoodValvet costs $13.99, with no in-app purchases.
Which has better reviews, sumFX or WoodValvet?
WoodValvet is rated higher. sumFX averages 4.4 out of 5 from 12 ratings, while WoodValvet averages 5.0 from 7 ratings.
Do sumFX or WoodValvet have ads?
Neither sumFX nor WoodValvet shows ads.
Which is updated more often, sumFX or WoodValvet?
sumFX ships an update every 6 months, and WoodValvet fortnightly. Most recently, sumFX was updated on September 7, 2026 and WoodValvet on September 8, 2026.

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