WoodStepper vs RasterFX
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
WoodStepper
This app is a versatile music production tool that combines sequencing, synthesis, and sampling. It offers multiple independent sequencers that can be linked, and each can function as a synth. It supports both standalone use and as a plugin within a DAW.
- 4 independent 8-step sequencers
- Synth mode for parameter automation
- Sequencers can be linked for longer patterns
- Audio and MIDI output
- Built-in VCOs with modulation
- Sampling from live input or files
- Step-based pitch shifting and filtering
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The WoodStepper is a sequencer/synthesizer/sampler having both audio and midi out. The audio sources can be the track audio, sampled audio (live/track recorded or from file) or the built-in VCO's. The VCO notes can also be set by the Chordulator which finds chord notes in a live stream or recorded track. It consists of 4 independent 8-steps sequencers which can be linked to a 16, 24 or 32 steps sequencer. Each sequencer can independently be set to Synth mode. So WoodStepper can be used in any combinations of sequencers, synths and looper/samplers. Each step can also send 4 midi messages (note on, CC, …) to 2 midi channels. The audio part for each sequencer has a pitch (down) shifter, (Moog lowpass) filter with A(D)SR envelope, saturator, amplitude A(D)SR envelope and delay line which can all be set independently per step. The VCO notes can be set by midi input and WoodStepper has a function to limit the notes produced by VCO + pitch shifters to a specified key and interval scale. The app can be used stand-alone (device audio input and output) or as a plugin in a DAW. The manual can be downloaded from : http://www.woodmansimmaculatemaplesyrupstudio.be/woodstepper/WoodStepperHelp.pdf - IOS plugin type : AUv3 effect, AUv3 instrument and stand-alone app. - Has 4 independent 8-steps sequencers. - Each of the 4 sequencers can be set to Synth mode, the steps can then be used to automate parameters while playing. - Sequencers can be linked to form 16, 24, or 32 steps sequencer(s). - Each sequencer can have a different timing. - Steps can be disabled for non 4/4 patterns. - Each step can send up to 4 midi messages (+ all previous notes off) on 2 midi channels - Audio sources can be the track audio, sampled audio or 3 VCO's (per sequencer). - Sampling (audio coming live or from the DAW track) can be armed (per sequencer) with a button or a midi in CC. - Samples can also be loaded from file (sample files should be in the WoodStepper iCloud folder) - Each sequencer has it’s own gain, clipping led and brick-wall limiter. - VCO’s have the usual waveforms and can be modulated in various ways. - Full polyphonic mode sends 4 subsequent note-ons to the 4 sequencers/synths. - Para-polyphonic mode (per sequencer) sends notes 2&3 to the sequencer/synth VCO's 2&3, giving max 12 voices. - Each sequencer/synth can set the range of receiving midi notes (which allows for up to 4 split keyboard regions). - Each step has a pitch down shifter (sequencer mode only). - Pitch shifters have a glide control. - Pitch shifters can be set to a random value (out of a list of scales). - Pitch values can be harmonically locked to the Just Scale or the Equally Tempered Scale. - VCO + Pitch can be limited to a specified key + interval scale (e.g. C Major Pentatonic) - Each step has a 4-pole Moog Lowpass filter with resonance and ASR (sequencer) or ADSR (synth) envelope. - Steps have an additional high-pass filter and a saturation control. - All steps have an ASR (sequencer) or ADSR (synth) amplitude envelope and a step gain. - Each step has its own delay line with independent timing, feedback, and filtering. - Step audio and delay can be panned independently per step. - Sequencers can be started manually, started with the DAW transport, start after receiving a midi note or start audio gated. - Sequencers can be stopped manually or after a number of bars have been played. - A “Play 1 Step” button allows to finetune step settings - An “All Steps” button allows to set the same parameter value in all steps. - Has a global Dry-Wet, Input gain and Output gain control. - Presets can be stored in iCloud Drive (makes them available on all your devices). - Presets can be switched with Midi Program Changes or with the "Next Preset" button when running. - Major controls can be set with Midi CC messages. - Ableton Link can synchronise tempo, phase and start-stop with other Ableton Link enabled apps.
RasterFX
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Make any sound move. RasterFX is a playable modular multi-effects processor for iPhone and iPad. Use it standalone with a microphone, an imported audio file or built-in signals — or load it as an AUv3 audio effect in AUM, GarageBand, Logic Pro for iPad, Loopy Pro, Cubasis and other Audio Unit hosts. BUILD YOUR EFFECT CHAIN Choose from Filter, Delay, Drive, Reverb, Grain, Repeat, Motion and Dynamics. Arrange up to six plates in series or split them into parallel A/B paths. Reorder the chain and the sound changes with it. MODULATE ANY CONTROL Patch LFOs, envelope followers, random and chaos sources, step sequencers, MIDI, macros, the XY pad or device tilt to any control. Create up to 16 modulation lines, with live arcs showing exactly how the sound is moving. PERFORM THE PATCH Morph between four snapshots on the XY pad. Turn eight macros. Hold four momentary throws for stutter, sweep, reverse and freeze. RasterFX is built to be played with one hand, not programmed and left alone. GENERATE, LOCK, EVOLVE Nudge a patch, reshape it or roll a new one. Lock the parts you want to keep, undo any result and save the seeds worth returning to. Evolve lets the patch drift over time while staying anchored to the sound you chose. SEE WHAT YOU HEAR Every effect has its own live visualizer. The CRT and halftone interface makes filters, delay taps, grains, dynamics and modulation visible without turning the screen into a wall of meters. RECORD THE RESULT Record the processed output to WAV, rename takes and share them from the app. FREE TO START. PRO ONCE. Free includes all eight effects, all modulation sources, every factory preset, three plates, four modulation lines and 60-second recordings. No ads, account, watermark or reduced audio quality. RasterFX Pro is a one-time purchase — not a subscription. It unlocks six plates, 16 modulation lines, split routing, XY snapshot morphing, Evolve, A/B compare, unlimited recording length and your own saved presets. Your saved sound always plays back exactly as created, even if it uses Pro features; Free limits editing, never playback. Made for headphones, late at night.
Screenshots
Verdict
The clearest difference is price: RasterFX at Free against WoodStepper's $10.99. WoodStepper's advantage is in-app purchases (none vs 1) and iOS requirement (11.4 vs 17.0). On 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
RasterFX is free to download; WoodStepper costs $10.99 up front. RasterFX sells 1 one-off in-app purchase. WoodStepper asks for nothing beyond the download.
| Parameter | WoodStepper | RasterFX |
|---|---|---|
| Price | $10.99 | Free — better |
| Rating | 4.3 (12 ratings) — better | — |
| Positive reviews | 57.1% of reviews | — |
| Number of ratings | 12 — better | — |
| Update frequency | Every 3 weeks | — |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 11.4 — better | 17.0 |
| Further details — not scored | ||
| Size | 112 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Woodman's Immaculate Maple Syrup Studio | Chih Han Lin |
In-app purchases
WoodStepper
No in-app purchases
RasterFX
- RasterFX Pro$3.99









