Jasuto vs SimplyPhaser
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Jasuto
Create unique sounds and sequences by visually constructing your own synthesizers and effects. Features a powerful sampler for recording, editing, and drawing new samples. Control sound through node positioning and connections, with flexible automation and multi-touch control.
- Visual modular synth construction
- Multi-touch control surface
- Fully-featured sampler
- Node-based sound control
- 75+ built-in modules
- Audiobus and OSC/MIDI support
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[ACCOLADES] - Featured in Apple's staff favorites! - Reviewed in Computer Music magazine and received a 9/10! [DESCRIPTION] Jasuto is the worlds first (and most powerful) modular synthesizer for the iDevices. Jasuto allows you to visually construct your own synths/effects, and use them to make sequences all on your device! With the addition of a fully-featured sampler you can now record/resample/edit, and even create entirely new samples by drawing right in the app. Jasuto uses the relative position of nodes and their connections to control the sound. So the scene not only represents the synthesis structure, but also a custom multi-touch control surface. Motion can be recorded per node giving you rich, flexible automation. Connections can be created automatically by simply dragging nodes around, or manually. Each wire can be double-tapped to allow even more control of each connection. Jasuto comes installed with 75+ modules as well as 200+ pre-loaded scenes and samples. Each of the modules have been hand-optimized for your device's CPU, allowing you to create extremely complex scenes. [NOTABLE FEATURES] - Anti-aliased oscillators with hard-sync, FM, PWM, PM - Analog style filters (ap, lp, hp, bp, ladder emulation) - Signal control (compressor, limiter, gate, follower) - Zoomable sampler editor with several loop modes (normal, 1 shot, ping, granular) - ADSR envelope editor - Multipage/octave sequencer - Tape style analog delay - Reverb, phaser, several waveshapers - Resample/record the current playback - Audio copy via the pasteboard - Incoming OSC and MIDI for notes and CC's - Audiobus support (input, effect & output source) - Completely compatible with iOS7 - Updated UI graphics - Universal device and Retina support - A shiny new manual - Added background audio support - Low latency audio (256 samples) - Sample sharing through SoundCloud - Dropbox syncing of samples/scenes - High Fidelity (Hi-Fi) Audio [WEBSITE] http://www.jasuto.com
SimplyPhaser
Apply a classic phaser audio effect to your music with this straightforward tool. It uses all-pass filters to create out-of-phase signal copies for a retro sound. Use it within compatible music hosts or directly within the app.
- Classic phaser audio effect
- All-pass filter implementation
- AUv3 app extension support
- Standalone app experimentation
- Retro sound generation
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A simple but straightforward phaser audio effect to give you that nice retro feel. Unlike the SimplyFlange effect that is also available, this filter does not involve any delay buffer. Rather, it uses a string of all-pass filters to generate out-of-phase copies of the input signal. These are mixed together to produce the classic phasing effect. The filter lives in an AUv3 app extension so it is available for use in any host app that supports AudioUnit components such as AUM or Cubasis or GarageBand. You can also experiment with the audio effect directly in this app.
Screenshots
Verdict
The clearest difference is review sentiment: Jasuto at 80% against SimplyPhaser's 0%. Jasuto also leads on rating (4.1 vs 3.0) and ratings volume (38 vs 1). SimplyPhaser's advantage is update cadence (every 3 weeks vs every 3 months) and price ($0.99 vs $4.99). 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
Jasuto costs $4.99 and SimplyPhaser $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Jasuto holds the better App Store score, 4.1 against 3.0. That said, the two scores are not equally well evidenced: Jasuto has 38 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 80% of Jasuto's written reviews are positive against 0% of SimplyPhaser's.
Jasuto ships an update every 3 months, SimplyPhaser every 3 weeks. The most recent releases landed on November 1, 2026 and October 21, 2026 respectively.
| Parameter | Jasuto | SimplyPhaser |
|---|---|---|
| Price | $4.99 | $0.99 — better |
| Rating | 4.1 (38 ratings) — better | 3.0 (1 ratings) |
| Positive reviews | 80.4% of reviews — better | 0.0% of reviews |
| Number of ratings | 38 — better | 1 |
| 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, Mac |
| Requires iOS | 8.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 51 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Christopher Wolfe | Brad Howes |
Customer experience
Jasuto
SimplyPhaser
Bugs and requests
Jasuto
Reported bugs
12 issues- Privacy warning on manual
- Not working on iPhone
- No delete command in File menu
- Crashing when editing value fields
- Information button not working
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- Odd wiring issues sometimes
- Sample playback tempo issues
- Crashing on older iOS versions
- App does not open
- Audiobus not working
- Update crashes on iTouch 3.1.2
- Crashes after splash screen on iPod touch OS 3.1.3
Requested features
19 requests- AUv3 effect/instrument version
- Access to file browser
- Tutorial videos
- Dark mode option
- Advanced analytics dashboard
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- Add delete command in File menu
- Fix crashing when editing value fields
- Fix Information button
- Allow entering/editing file information
- Add Core MIDI support
- Increase recording length
- Increase sequencing length
- Improve developer communication
- Improve playback through bottom speaker
- Add complete manual
- Add automatic connecting feature as an option
- Allow listening to samples before loading
- Add more sophisticated controller modules
- Create custom controllers
SimplyPhaser
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Jasuto
No in-app purchases
SimplyPhaser
No in-app purchases









