SimplyPhaser vs JAX SR
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
JAX SR
This audio effect processor allows selective frequency range processing for modulation effects. It offers a classic chorus with MIDI control and aims to avoid negative side effects by targeting specific frequency bands.
- Selective frequency range processing
- Classic chorus modulation
- Optional direct MIDI control
- Universal app for multiple Apple platforms
- Avoids negative side effects of full-range effects
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The manual is available at : https://audio.digitster.com/wp-content/uploads/2024/05/JAX-SR-Chorus-Manual.pdf The JAX SR Series are AudioUnits (AUv3), which allow to select a frequency range for effect processing. This one provides a classic chorus modulation effect with optional direct MIDI control assignment to the parameters. If (especially) modulation effects are applied to the entire frequency range, this usually will introduce negative side effects. The JAX [SR] Series allow a selective frequency range and dynamic adjustment of the mix easily. More information can be found on the product website at: https://audio.digitster.com/ Please note, that AudioUnits (AUv3) require a supporting host application to perform. This build (like all our latest releases) is truly 'universal', meaning, the audio unit is available for: - MacOS (Apple Silicon) - iOS (all actual iPhones) - iPadOS (all actual iPads) - visionOS (Apple Vision Pro) Requirements: MacOS 10.15++ iOS 14.0++
Screenshots
Verdict
The clearest difference is rating: JAX SR at 5.0 against SimplyPhaser's 3.0. JAX SR also leads on iOS requirement (14.0 vs 16.4). SimplyPhaser's advantage is price ($0.99 vs $6.99). On review sentiment, ratings volume, update cadence 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
SimplyPhaser costs $0.99 and JAX SR $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.
JAX SR holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews split almost evenly too, at 0% and 0% positive.
SimplyPhaser ships an update every 3 weeks, JAX SR monthly. Both last shipped on November 3, 2026.
| Parameter | SimplyPhaser | JAX SR |
|---|---|---|
| Price | $0.99 — better | $6.99 |
| Rating | 3.0 (1 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| Number of ratings | 1 | 1 |
| Update frequency | Every 3 weeks — better | Monthly |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Requires iOS | 16.4 | 14.0 — better |
| Further details — not scored | ||
| Size | 5 MB | 21 MB |
| Age rating | 4+ | 4+ |
| Developer | Brad Howes | Jens Guell |
Customer experience
SimplyPhaser
JAX SR
In-app purchases
SimplyPhaser
No in-app purchases
JAX SR
No in-app purchases









