harpSampler vs WoodTroller
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
harpSampler
Transform your device into a multi-touch harp by importing your own sounds or using the built-in sampler. Create unique musical instruments and special effects with adjustable octaves, scales, and chords.
- Import custom sounds for instrument generation
- Automatic 8-octave harp creation
- Multi-touch interface for live performance
- Adjustable scales and chords
- Real-time sound bending and start position control
- Record live performances
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"harpSampler" transforms your device into a professional multi-touch harp with sound sampler. Simply create your own sound sample (an "A" or "LA" note for musical instrument sound or any note for special sounds or special effects): - using the "REC" button of harpSampler (uses the internal microphone of the device to record the sound sample for the harp) - importing the sound sample that you have created with a wave editor for MAC or PC in your device through iTunes synchronization - using copy / paste for the audio file you have created using the technology "iTunes File Sharing" Once imported the sound sample, harpSampler tool will automatically create the complete "Harp" (with 8 octaves). At which point you can play your harp (with the sound created by you or using the default "HARP" sound included in the application bundle), or entertain your friends with a scale of special effects (harp style). The software is able to read all files / audio samples that are compatible with your portable device (.wav, .mp3, .m4a, .caf, etc ...), you can then create your sound (you only need one audio file) using standard wave editor for Mac or PC, add reverb, chorus, special effects (you can manipulate the sound as you wish), save it in the file format that you prefer and use harpSampler to automatically create the complete musical instrument, to be played like an harp. Using the "SAMPLE START POSITION" control you can choose the exact play start position of the sound sample ("wave cut"). Using the "REC" button you can record your live performance or record a new sound sample to be assigned to the musical instrument. Using the different scales (You can choose the scale You want from the "SCALE" menu), you do not need necessarily to be an expert musician to play some beautiful scales with your harp. Also, using the "chords" control (C, D, E, F, G, A, B) you can choose the chord for your harp or scale ("chords" work together with the "scale") . With harpSampler You can create the harp of your dreams or, in general, you can create any kind of musical instrument, or special effects generator and play it like an harp! Features: - Import any sound, and automatic generation of the musical instrument (8 octaves) - Storing infinite sounds using the archive of sound samples "Samples Archive" of harpSampler - Harp multi-touch for live music performances - Check for increase / decrease the eighth harp used in real time - "Bending" control to change the sound of the device in real time - "Sample Start Position" control: you can remove the initial part of a sample (eg. silence), specifying the play start time of the sample ("wave cut" feature) - "STOP" button to immediately stop the harp sound - Harp with multiple voices (up to 96 voices) - Default "HARP" sound provided with the app - Ability to "record" musical patterns during the live performance: start the recording (pressing the "REC" button), harpSampler will record an audio file of the music you are playing with the harp musical instrument (press a cable of the harp to play the recorded audio of Your live performance) - "CHORDS" control - Multiple scales selectable from the "SCALE" menu - Virtual keyboard, pressing the "V. KEYB.": disable the automatic scale and enable the virtual keyboard on the cables of the harp *** PROMOTIONAL MESSAGE: If You want to play the "Golden Gate Bridge" like a giant harp, using the sound samples of the Golden Gate Bridge itself, You can download the app "Play The Golden Gate Bridge". The sound samples of the "Golden Gate Bridge" provided with the "Play The Golden Gate Bridge" app were sampled by the "San Francisco Synthesizer Ensemble" company. Amazing sounds… Try it !!! ***
WoodTroller
This app functions as a multi-touch bar MIDI controller for MPE and MIDI V2. It offers customizable rotary controls and buttons to manage various parameters and send MIDI commands, with iCloud syncing for presets.
- MPE touch bar with individual pitch shift, pressure, and CC74 control
- 8 customizable rotary controls for sending multiple CC messages
- 8 programmable buttons for sending various MIDI commands
- User-definable rotary and button names, colors, and ranges
- Preset storage and automatic syncing via iCloud
- Stand-alone app and AUv3 plugin support
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WoodTroller is NOT an app to annoy people. It’s an MPE and midi V2 multi touch bar keyboard and midi controller : The MPE touch bar supports multiple notes with individual pitch shift (horizontal movement), pressure and cc74 (vertical movement). WoodTroller has 8 general purpose rotary controls : - Each can send 6 different CC messages to different channels. - Each of the 6 command values can be mapped differently to the full rotary range. - So 1 rotary can control several parameters on the same or on different instruments. - Rotary names, colour, unit, range can all be user set. WoodTroller also has 8 general purpose on-off or push buttons : - Each button can send up to 8 different midi commands (CC, PC, NoteOn, …) to different channels. - This allows to quickly switch multiple midi instruments or devices to another program or to other settings. - Each midi command’s data value can be auto incremented/decremented. - All button names, colour, type can be user set. All settings can be stored in presets in iCloud which yield automatic preset syncing between several WoodTrollers on different devices. WoodTroller is available as stand-alone app and as AUv3 plugin.
Screenshots
Verdict
The clearest difference is review sentiment: WoodTroller at 100% against harpSampler's 0%. WoodTroller also leads on rating (4.8 vs 3.0) and update cadence (fortnightly vs every 37 months). harpSampler's advantage is price ($0.99 vs $9.99). On ads, in-app purchases, monetization model 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
harpSampler costs $0.99 and WoodTroller $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.
WoodTroller holds the better App Store score, 4.8 against 3.0. Both are backed by a comparable volume of ratings — 2 and 6 respectively. Written reviews point the same way: 0% of harpSampler's written reviews are positive against 100% of WoodTroller's.
harpSampler ships an update every 37 months, WoodTroller fortnightly. The most recent releases landed on September 16, 2026 and September 8, 2026 respectively.
| Parameter | harpSampler | WoodTroller |
|---|---|---|
| Price | $0.99 — better | $9.99 |
| Rating | 3.0 (2 ratings) | 4.8 (6 ratings) — better |
| Positive reviews | 0.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 2 | 6 — better |
| Update frequency | Every 37 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad | iPad, Mac |
| Requires iOS | 16.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 17 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | Gianluca Natalini | Woodman's Immaculate Maple Syrup Studio |
Customer experience
harpSampler
WoodTroller
In-app purchases
harpSampler
No in-app purchases
WoodTroller
No in-app purchases









