Arpeggist vs SpaceFields
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Arpeggist
This app transforms single notes or chords into complex musical patterns using a programmable step matrix editor and a unique random generator. It allows for live playing with an onscreen or hardware keyboard and includes an internal sound generator for immediate use.
- Programmable step matrix editor
- Random arpeggio generator
- Live playing with onscreen keyboard
- Internal sound generator
- Chord generator
- Dozens of selectable scales
Read full descriptionHide full description
Arpeggist is a MIDI Note arpeggiator with a very flexible step matrix editor for programming and a unique “rolling dice” random arpeggio generator. You can build arpeggios from scratch or use one of the factory arpeggios as foundation. You can also create an unlimited number of user arpeggio presets. Just play a chord or a single note and it gets transformed into a grooving monophonic synth line or a rhythmical chord pattern. Full featured programmable Arpeggiator • User programmable sequences with up to 32 steps. • Can trigger single notes and chords. • Unique randomizer generates Arpeggios with 100% usability. • 40 Factory arpeggios included, unlimited user arpeggios possible. • For each step you can program tie (bound notes), accent, transposition and note order • Use to control MIDI compatible Synthesiser Live • Play trigger notes live with the onscreen keyboard. • Optionally use CoreMIDI compatible hardware keyboard. • Chord generator plays complex chords on one finger playing. • Internal sound generator. • Selectable Arpeggiator MIDI Output port. • Dozens of scales selectable • Variable Keyboard layout for scale optimized playing Global • Audiobus 2 compatible (Input slot) with Preset saving. • Inter App Audio • Exchange user presets with File Sharing in iTunes. • Support for virtual MIDI input/output connections.
SpaceFields
Create evolving rhythmic soundscapes from any audio source. This app uses a loop-based system with dual loops, pitch shifting, and effects to generate ambient textures and rhythmic structures. Experiment with complex sound design using intuitive controls and randomization.
- Loop-based sound mangling
- Dual loop recorder
- Pitch shifting and effects
- Convolution reverb with deep spaces
- Rhythmic structure generation
- Automation generators with randomization
- Live and sample processing modes
Read full descriptionHide full description
Loop-based mangler effect to create slowly changing rhythmic sound structures in deep reverb space from any external sources or samples. Great for experimenting and designing ambient and noise backgrounds with rhythmic elements. The principle of the application is quite simple. It is based on a loop recorder with two loops. When one loop is recorded, the second is played back. When the loop recording stops, there is a smooth transition between them. Three separate outputs can playback the recorded loop with different pitches (speeds), each with its own effects and two automation generators. The mix of these outputs is fed to the convolution reverb. The reverb is packed with a set of long and deep sound spaces that create a blurry and ambient sound. But the main feature of this application is its well designed parameters that make it easy to experiment with a huge number of sound options using any source material from live instruments to synthesized sound. With just two parameters you can add complex rhythmic structures based on Euclidean rhythms, and easy-to-use automation generators with a randomize option to add variations to the sound, allowing you to modify parameters like an LFO or based on a given rhythm. The convolution reverb has advanced options with which you can change and extend the original reverb spaces. Even using the randomization options, in almost every case, you will get interesting and various soundscapes and textures. With these options it is very easy to create the basis for new unique presets. It only takes a little tweaking of some parameters to get impressive results. The loop recorder can be started and stopped manually or by input signal, can use fixed length or overwrite the loop while recording, and has the option for crossfade between the end and the beginning of the loop. All this makes it convenient for live use as well as when processing recorded material. As an extended option, you can use a special mode in which the application works as a direct effect, without the loop recorder. The special mode sampler is designed for quickly load samples and easy control of the application when used it live. This panel contains the input and output controls, essential controls of the loop recorder, and a large area with a recording counter, which is also used to start/stop the recorder. You can assign up to nine samples for fast loading into the loop, as well as save a recorded loop as a sample and to an external file. SpaceFields is a universal application for iOS and macOS. It can work on iPhone and iPad as well as Mac / MacBook with M1 chip (and later). SpaceFields works on iPhone and iPad standalone, as an Audio Unit or Inter-App Audio module, with supports Audiobus host app. On MacOS, SpaceFields can works both as a standalone application and as an Audio unit (AUv3) with DAWs and other hosts that support AUv3 plugins. All application features are available on iOS and macOS, including MIDI support (with a MIDI learn option), audio unit parameters and importing samples from any directory on device. SpaceFields has a built-in detailed description of all parameters also available as PDF file on the application site. Demos and previews: https://www.youtube.com/watch?v=cL1Dis3u0AQ https://www.youtube.com/watch?v=TpkWkc5I0uE https://www.youtube.com/watch?v=74LyfDM2dQM You can find more information on SpaceFields and other creative audio apps at: https://motion-soundscape.blogspot.com
Screenshots
Verdict
The clearest difference is review sentiment: SpaceFields at 90% against Arpeggist's 14%. SpaceFields also leads on rating (4.7 vs 2.0) and ratings volume (47 vs 3). Arpeggist's advantage is price ($2.99 vs $10.99) and iOS requirement (7.0 vs 13.4). On update cadence, 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
Arpeggist costs $2.99 and SpaceFields $10.99 up front. Neither carries in-app purchases, so what you see is what you pay.
SpaceFields holds the better App Store score, 4.7 against 2.0. That said, the two scores are not equally well evidenced: SpaceFields has 47 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 14% of Arpeggist's written reviews are positive against 90% of SpaceFields's.
Arpeggist ships an update every 5 weeks, SpaceFields every 2 months. The most recent releases landed on October 11, 2026 and October 15, 2026 respectively.
| Parameter | Arpeggist | SpaceFields |
|---|---|---|
| Price | $2.99 — better | $10.99 |
| Rating | 2.0 (3 ratings) | 4.7 (47 ratings) — better |
| Positive reviews | 13.6% of reviews | 90.5% of reviews — better |
| Number of ratings | 3 | 47 — better |
| Update frequency | Every 5 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 7.0 — better | 13.4 |
| Further details — not scored | ||
| Size | 11 MB | 132 MB |
| Age rating | 4+ | 4+ |
| Developer | Harry Gohs | Igor Vasiliev |
Customer experience
Arpeggist
SpaceFields
In-app purchases
Arpeggist
No in-app purchases
SpaceFields
No in-app purchases









