Comparison

Midiflow Randomizer (Audiobus) vs mididelay

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

Head to head
About

Midiflow Randomizer (Audiobus)

This MIDI effect app generates random variations in notes, velocities, and timing for musical sequences. It allows users to specify the range of randomization and can be used with other MIDI tools for harmonious results. Requires Audiobus 3.

Highlights
  • Randomize notes
  • Randomize note velocities
  • Randomize timing
  • Specify variation range
  • Use multiple instances
  • Requires Audiobus 3
Features
Read full description

Whether you want to add a human touch to note sequences or seek inspiration, this MIDI effect app for Audiobus 3 is a simple but effective tool for you. Randomize notes, note velocities, and timing just by specifying a desired range of variations. With the help of Midiflow Scales, you can keep your randomized notes in harmony. + Randomize notes + Randomize note velocities + Randomize timing + Specify an amount of variation for each type + Use multiple instances of this effect in Audiobus NOTE: This app requires Audiobus 3. Insert it into one or more MIDI effect ports to affect the data going through the respective pipelines.

About

mididelay

This app applies traditional delay effects to MIDI data, allowing for complex sound manipulation. It offers multiple independent delay lines, various MIDI message processing, and customizable feedback chains with built-in effects. Organize lines sequentially or in parallel for unique sonic textures.

Highlights
  • 8 independent delay lines with feedback
  • Processes MIDI notes, CC, aftertouch, pressure, pitch bend
  • Customizable feedback modes (average, min, max)
  • Sequential and parallel delay line algorithms
  • Scale quantize, pitch, and velocity randomization
  • 3 independent scenes with cross-fading
  • Standalone and AUv3 support
Features
Read full description

mididelay is an implementation of traditional delay effect adapted for the MIDI data. It features: • 8 independent delay lines with feedback • Each delay line can process MIDI notes, control change, aftertouch, polyphonic key pressure and pitch bend messages. • For the feedback, the “feedback level” is applied to the messages; note messages change velocity and all other messages can be mixed with previous values using one of three modes (average, minimum and maximum value) • It’s possible to organise delay lines in different possible ‘algorithms’, sequentially and/or in parallel • There are three effects available inside delay’s feedback chain: scale quantise, pitch and velocity value operations randomisation • Each ‘preset’ contains 3 independent scenes marked “A”,”B” and “C”, it’s possible to cross- fade between them and adjust overall amount of the effect with 2D pad. • Simple mode : only one delay with scenes morphing. Standalone and AUv3

Screenshots

Midiflow Randomizer (Audiobus)4 screens
mididelay3 screens

Verdict

The call

The clearest difference is review sentiment: mididelay at 100% against Midiflow Randomizer (Audiobus)'s 50%. mididelay also leads on rating (5.0 vs 3.0). Midiflow Randomizer (Audiobus)'s advantage is price ($1.99 vs $4.99) and iOS requirement (10.2 vs 15.6). On ratings volume, update cadence, ads and in-app purchases 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

Midiflow Randomizer (Audiobus) costs $1.99 and mididelay $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

mididelay holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 4 and 3 respectively. Written reviews point the same way: 50% of Midiflow Randomizer (Audiobus)'s written reviews are positive against 100% of mididelay's.

UpkeepUpdate frequency

Midiflow Randomizer (Audiobus) ships an update every 11 months, mididelay every 10 months. The most recent releases landed on November 2, 2026 and October 30, 2026 respectively.

Scorecard4 real differences · 6 level
Midiflow Randomizer (Audiobus) versus mididelay: the parameters behind the verdict, then further details
ParameterMidiflow Randomizer (Audiobus)mididelay
Price$1.99 — better$4.99
Rating3.0 (4 ratings)5.0 (3 ratings) — better
Positive reviews50.0% of reviews100.0% of reviews — better
Number of ratings4 — better3
Update frequencyEvery 11 monthsEvery 10 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS10.2 — better15.6
Further details — not scored
Size5 MB9 MB
Age rating4+4+
DeveloperJohannes DoerrAlexey Nadzharov

Customer experience

Midiflow Randomizer (Audiobus)

All ratings4 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews6 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

mididelay

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Midiflow Randomizer (Audiobus)

No in-app purchases

None

mididelay

No in-app purchases

Questions

Is Midiflow Randomizer (Audiobus) free?
Midiflow Randomizer (Audiobus) costs $1.99, with no in-app purchases.
Is mididelay free?
mididelay costs $4.99, with no in-app purchases.
Which has better reviews, Midiflow Randomizer (Audiobus) or mididelay?
mididelay is rated higher. Midiflow Randomizer (Audiobus) averages 3.0 out of 5 from 4 ratings, while mididelay averages 5.0 from 3 ratings.
Do Midiflow Randomizer (Audiobus) or mididelay have ads?
Neither Midiflow Randomizer (Audiobus) nor mididelay shows ads.
Which is updated more often, Midiflow Randomizer (Audiobus) or mididelay?
Midiflow Randomizer (Audiobus) ships an update every 11 months, and mididelay every 10 months. Most recently, Midiflow Randomizer (Audiobus) was updated on November 2, 2026 and mididelay on October 30, 2026.

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