WaveFolder vs Surface Builder
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
WaveFolder
This audio effect app adds harmonics to sound by folding waveforms. It's ideal for enhancing synth leads, transforming drum loops, and creating ambient drones. Customize folding thresholds and modulation for unique sound design.
- Wave folding distortion
- Harmonic addition
- Adjustable folding thresholds
- Modulation of folding amount and symmetry
- Tempo-based or free-running modulators
- Built-in wave shaper
- Color themes
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WaveFolder is a simple Wave Folding Audio Unit Extension. Wave Folding is an interesting distortion effect that adds harmonics to the original signal by folding the waveform back on itself when it exceeds a clipping threshold. WaveFolder is great for adding spice to monophonic synth leads and rhythmic, tempo based modulations can turn drum loops into totally new entities, while long, slow, free running modulations are perfect for dirty ambient drones. WaveFolder lets you set the folding thresholds and modulate the folding amount and symmetry with tempo based or free running modulators. WaveFolder also includes a wave shaper to add even more interest. There is also a short built-in manual and a selection of colour themes.
Surface Builder
Create custom MIDI control surfaces for audio applications. Design interfaces with buttons, knobs, and faders to send and receive MIDI data, control audio clips, and customize appearance. Supports AUv3 plugins and standalone use.
- Customizable MIDI control surfaces
- AUv3 plugin and standalone modes
- Send/receive MIDI data (notes, controllers, pitch bend)
- Audio clip playback control
- Multi-scene interface design
- Drag and drop interface customization
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Surface Builder is a tool for creating control surfaces that send MIDI data to one or more audio components in order to simplify remote control tasks. You start by creating a surface of a given size, adding buttons, knobs, faders, etc. to the surface and configuring them to generate the required MIDI output. Surface Builder allows you to send note on/off, controller change and program change values as well as being able to emulate modulation wheel and pitch bend data. Buttons can also be configured to send bulk MIDI data using a single key press. You can build surfaces that span multiple scenes and link between them for large complex interfaces. Incoming MIDI data can also be used to control or trigger elements of the interface, giving a bi-directional stream of MIDI data. Surface Builder can be added as a pure MIDI plugin which allows processing of MIDI only, or as an instrument plugin, allowing you to process audio passing through it. You can even load it as an intrument and configure a surface to start and stop audio clips either manually or remotely. Surface Builder was designed to be used as an AUv3 plugin within your favourite DAW, but it can also be used in standalone to send MIDI directly to MIDI hardware using direct access to their MIDI ports. Many different object types are supported including buttons, switches, lights, rotary knobs, faders, sliders, XY-Pad, keyboards, as well as text, image and box objects. Each object has many different styles and colours, so no two surfaces look the same. Drag and drop an audio file onto a button and that button becomes a clip player. Attach rotary knobs to control the clips volume and pan. Throw on top of that a LP/HP filter knob and you are cooking on gas. Drop PNG transparent image icons on buttons to customise the look and feel. A button can record and playback bulk MIDI commands, on both button press and release. So pressing a button could send the notes of a chord when pressed, and appropriate note offs on release. A surface can consist of up to 6 scenes for really complex designs. Buttons and switches can be used to switch scenes and also to show and hide other objects to make better use of screen space. Once your surface is complete switch to presentation mode to hide all the toolbars. Each surface can be saved with compressed audio and images all in a single surface file. Features ○ AUv3 and standalone modes. ○ Bluetooth MIDI support. ○ Drag and Drop interface. ○ Send and Receive Note On/Off. ○ Supports all Control Change parameters. ○ Supports Program Change commands with bank support. ○ Multiple Audio Clip playback. ○ Record and playback bulk midi data. ○ Multi-Scene. ○ Multi-level undo/redo. ○ MIDI Monitor ○ Presentation Mode. ○ iPhone and iPad compatible.
Screenshots
Verdict
The clearest difference is price: WaveFolder at $4.99 against Surface Builder's $14.99. Surface Builder's advantage is update cadence (every 3 weeks vs every 3 months) and iOS requirement (13 vs 15.6). On rating, review sentiment, ratings volume and ads 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
WaveFolder costs $4.99 and Surface Builder $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 4.6 for WaveFolder against 4.7 for Surface Builder. Both are backed by a comparable volume of ratings — 9 and 15 respectively. Written reviews are what separate them: 75% of WaveFolder's written reviews are positive against 80% of Surface Builder's.
WaveFolder ships an update every 3 months, Surface Builder every 3 weeks. The most recent releases landed on September 29, 2026 and September 22, 2026 respectively.
| Parameter | WaveFolder | Surface Builder |
|---|---|---|
| Price | $4.99 — better | $14.99 |
| Rating | 4.6 (9 ratings) | 4.7 (15 ratings) — better |
| Positive reviews | 75.0% of reviews | 80.0% of reviews — better |
| Number of ratings | 9 | 15 — better |
| Update frequency | Every 3 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 13 — better |
| Further details — not scored | ||
| Size | 4 MB | 32 MB |
| Age rating | 4+ | 4+ |
| Developer | Living Memory Software | 4Pockets.com |
Customer experience
WaveFolder
Surface Builder
In-app purchases
WaveFolder
No in-app purchases
Surface Builder
No in-app purchases
Questions
Is WaveFolder free?
Is Surface Builder free?
Which has better reviews, WaveFolder or Surface Builder?
Do WaveFolder or Surface Builder have ads?
Which is updated more often, WaveFolder or Surface Builder?
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