Comparison

ShiftBud Generative MIDI AUv3 vs REVIRY

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

ShiftBud Generative MIDI AUv3

This app generates random MIDI sequences using a shift register chip, inspired by a popular eurorack module. It offers extensive control over scales, octaves, velocity, and MIDI CC modulation, allowing for complex and evolving musical patterns.

Highlights
  • Random looping generative MIDI sequencing
  • 16-bit shift register logic
  • Adjustable chaos for sequence variation
  • Over 110 scales plus custom scales
  • MIDI CC generation and modulation
  • Unlimited pattern pages
  • Manual trigger function
Features
Read full description

ShiftBud is a random looping generative MIDI sequencer based on the eurorack module Turing Machine by Tom Whitwell.  It works based on the 16-bit shift register chips where it shifts its value on each sequencer step. However, you can lock the sequence in a desired length if you fully rotate the chaos knob to the left or right. If you introduce low amount of chaos, then the sequence "flips" occasionally and generate beautiful sequences. You can also produce random values if set higher amount of chaos.  The MIDI note generation can be in more than 110 scales plus your custom ScaleBud 2 scales. You can set the octave range, velocity or velocity randomness as well. You can set the higher and lower bounds on MIDI Control Change generation as well as the CC number you want to control. It's very useful on modulating synth parameters and you can even modulate the ShiftBud's AU parameters as well. You can also set a ramping value for a smoother change. With the 0% ramping, you can use it like a "sample and hold" module. With the manual trigger function, you can use another sequencer or keyboard to trigger ShiftBud's next note. You can create unlimited pattern pages on the lower left corner of the app and you can select the pattern with MIDI CC messages as well. Please note that ShiftBud is a MIDI app. The standalone version has an optional internal synth where you can enable or disable on the settings menu. The AUv3 plugin requires an audio app for output. For the AUv3 functionality, it needs to be hosted within an app such as AUM, Loopy Pro, Cubasis, Logic Pro, Nanostudio, Drambo, or apeMatrix.

About

REVIRY

Features
Read full description

Listen to music with your friends. Everyone keeps their own app. Reviry is the first app that connects friends across Spotify, YouTube Music, Apple Music, Amazon Music, and Tidal into one shared experience. YOUR AUDIO AURA Every track creates a living visualizer driven by energy, valence, and danceability. Watch your vinyl spin with radial EQ beams that pulse to the music. VIBES ROOMS Share a 6-digit code. Friends join in seconds. See what everyone is playing, drop emoji reactions, and trade messages. VIBES Q One shared queue across five music services. Auto-advancing, round-robin, fair turns. Add songs from search or what you are currently playing. MAKE IT YOURS Customize fonts, accent colors, and spacing. REVIRY+ ($13 one-time) Unlock multi-friend rooms, unlimited sharing, streaks, and all customization. No subscriptions.

Screenshots

ShiftBud Generative MIDI AUv34 screens
REVIRY3 screens

Verdict

The call

The clearest difference is price: REVIRY at Free against ShiftBud Generative MIDI AUv3's $5.99. REVIRY also leads on update cadence (every 2 days vs monthly). ShiftBud Generative MIDI AUv3's advantage is in-app purchases (none vs 1) and iOS requirement (13.0 vs 17.0). On 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

CostPrice · In-app purchases · Ads · Monetization

REVIRY is free to download; ShiftBud Generative MIDI AUv3 costs $5.99 up front. REVIRY sells 1 one-off in-app purchase. ShiftBud Generative MIDI AUv3 asks for nothing beyond the download.

UpkeepUpdate frequency

ShiftBud Generative MIDI AUv3 ships an update monthly, REVIRY every 2 days. The most recent releases landed on October 15, 2026 and October 10, 2026 respectively.

Scorecard4 real differences · 6 level
ShiftBud Generative MIDI AUv3 versus REVIRY: the parameters behind the verdict, then further details
ParameterShiftBud Generative MIDI AUv3REVIRY
Price$5.99Free — better
Rating4.7 (9 ratings) — better—
Positive reviews66.7% of reviews—
Number of ratings9 — better—
Update frequencyMonthlyEvery 2 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaid—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better17.0
Further details — not scored
Size7 MB3 MB
Age rating4+4+
DeveloperCem OlcayJonathan Marino

In-app purchases

None

ShiftBud Generative MIDI AUv3

No in-app purchases

1 purchases

REVIRY

One-time1
  • Lifetime Access$9.99

Questions

Is ShiftBud Generative MIDI AUv3 free?
ShiftBud Generative MIDI AUv3 costs $5.99, with no in-app purchases.
Is REVIRY free?
REVIRY is free to download, with in-app purchases available.
Do ShiftBud Generative MIDI AUv3 or REVIRY have ads?
Neither ShiftBud Generative MIDI AUv3 nor REVIRY shows ads.
Which is updated more often, ShiftBud Generative MIDI AUv3 or REVIRY?
ShiftBud Generative MIDI AUv3 ships an update monthly, and REVIRY every 2 days. Most recently, ShiftBud Generative MIDI AUv3 was updated on October 15, 2026 and REVIRY on October 10, 2026.

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