BAND BOY vs SimplyPhaser
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
BAND BOY
Enhance your instrument practice with a versatile tool that offers vocal, LR, and bass cuts for karaoke-style sessions. Adjust key and speed, integrate with other audio apps, and utilize various effects and recording capabilities.
- Vocal/LR/Bass Cut
- Key and Speed Control
- Inter App Audio Integration
- Microphone/Guitar Input
- Various Effectors
- Recording Functionality
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BAND BOY is the BEST tool for instrument practice with plenty of awesome features! BAND BOY will absolutely help you practice instruments in lots of ways. [VOCAL/LR/BASS CUT] Use Vocal Cut for a vocal practice like KARAOKE! Play a part of your favorite band with a guitar/piano-reduced sound by LR cut or a bass-reduced sound by Bass cut! [KEY/SPEED CONTROL] You can change the key and the speed. Control the key and the speed freely as you like for the practice! [INTER APP AUDIO] You can use effect applications of Inter App Audio such as "Amplitube". Moreover this application is available on other applications such as "Garage Band" as sound sources of Inter App Audio. [MICROPHONE(LINE) INPUT/VARIOUS EFFECTORS] Connect to a microphone or a guitar through an audio interface with a 3.5mm 4 pole plug!*2 Reverb, EQ etc. various effectors are available.*3 You can also switch effectors using "iReg Blueboard". (Please execute pairing of it and an iOS device by iRig Blueboard app, and change the setting to "CONTROL CHANGE MODE".) [RECORDING] Recording system is certainly equipped!*4 You can take out the recording file through iTunes. There are plenty of other useful functions on BAND BOY. Surely brings you a marvelous experience, download BAND BOY now! *1 Download add-on within the application. *2 Interfaces using a DOCK connector are not available. Internal microphone is effective when normal stereo earphones are connected. *3 To use more than two effectors at the same time, purchase "Release Effector Restriction". *4 To record longer than 20 seconds, purchase "Release Recording Time Restriction".
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: BAND BOY at 50% against SimplyPhaser's 0%. BAND BOY also leads on price (Free vs $0.99) and rating (5.0 vs 3.0). SimplyPhaser's advantage is in-app purchases (none vs 4) and update cadence (every 3 weeks vs every 5 months). On ratings volume, ads 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
BAND BOY is free to download; SimplyPhaser costs $0.99 up front. BAND BOY sells 4 one-off in-app purchases. SimplyPhaser asks for nothing beyond the download.
BAND BOY 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 point the same way: 50% of BAND BOY's written reviews are positive against 0% of SimplyPhaser's.
BAND BOY ships an update every 5 months, SimplyPhaser every 3 weeks. The most recent releases landed on October 6, 2026 and October 4, 2026 respectively.
| Parameter | BAND BOY | SimplyPhaser |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 5.0 (1 ratings) — better | 3.0 (1 ratings) |
| Positive reviews | 50.0% of reviews — better | 0.0% of reviews |
| Number of ratings | 1 | 1 |
| Update frequency | Every 5 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases — better | Paid |
| Devices | iPhone, iPod | iPhone, iPad, Mac — better |
| Requires iOS | 7.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 5 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Hiroaki Iwai | Brad Howes |
Customer experience
BAND BOY
SimplyPhaser
In-app purchases
BAND BOY
- Release Effector Restrictions$0.99
- Release Recording Time Restrictions$0.99
- Release Advertisement$0.99
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- Release All$1.99
SimplyPhaser
No in-app purchases









