FuncBud Math Sequencer & Synth vs mididelay
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
FuncBud Math Sequencer & Synth
Generate musical sequences using mathematical functions. Build and chain formulas to create complex, evolving melodies within a chosen key and scale. Offers conditional logic and random generation for unique musical patterns.
- Mathematical function builder
- Sequence chaining and repetition
- Conditional and random functions
- Key, scale, and octave control
- Adjustable sequencer parameters
- MIDI output
- AUv3 plugin support
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FuncBud is an AUv3 MIDI sequencer app that generates sequences using simple math functions. You can create math functions with the function builder, then chain and repeat them to create complex sequences. A simple x + 1 function would sequence all the notes in the scale in order. It gets more interesting when you use different formulas and chain them. The sequencer starts from the root note and evaluates the first formula to calculate the new note. Then, it moves to the next formula. If it's a repeating function, it repeats the specified number of times before moving to the next formula. The formula's result is converted to a note in the working key and scale, within the defined minimum and maximum octaves. This new note is then played. Additionally, the result is stored in a history of up to 64 entries for later sum or product calculations The function builder lets you create functions with simple addition, subtraction, multiplication and division operations as well as square, square root, sum and product operations. You can also use parentheses to prioritize the calculation order. The newly created function will be saved and accessible in the library across both the standalone app and AUv3 instances. With the conditional functions, you can specify a condition like "if this function is greater than that function, then execute the function A, otherwise execute the function B". The random function generator will generate a value between two functions, a function for the lower bound and another function for the upper bound. The sequencer picks the notes in the current key and scale, between the minimum and maximum octaves. You also have a root note, the starting note, which are all defined at the top of the UI. You can use BrainBud to change the key and scale as well. The sequencer speed (rate), gate length, gate length variety, velocity, velocity variety and swing parameters are accessible with the sliders at the bottom of the UI. In edit mode, you can change the order of the functions. You can also delete a function in edit mode, or simply by swiping it to the left. Newly created patterns automatically copy the current one, making subtle changes easier. If you prefer a clean slate, you can quickly clear the list with the clear button. The loop detection function is accessible in the settings menu. When enabled, it would detect the loop and increment the 'x' value by 1 to break the loop. Please note that FuncBud 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.
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.
- 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
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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
Verdict
FuncBud Math Sequencer & Synth and mididelay both sit at 4.9 stars, but that hides the real split: 100% of mididelay's written reviews are positive against 67% of FuncBud Math Sequencer & Synth's. FuncBud Math Sequencer & Synth's advantage is update cadence (every 5 days vs every 10 months) and price ($3.99 vs $4.99). On rating, ratings volume, 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
FuncBud Math Sequencer & Synth costs $3.99 and mididelay $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 4.9 for FuncBud Math Sequencer & Synth against 5.0 for mididelay. Both are backed by a comparable volume of ratings — 7 and 3 respectively. Written reviews are what separate them: 67% of FuncBud Math Sequencer & Synth's written reviews are positive against 100% of mididelay's.
FuncBud Math Sequencer & Synth ships an update every 5 days, mididelay every 10 months. The most recent releases landed on September 21, 2026 and September 9, 2026 respectively.
| Parameter | FuncBud Math Sequencer & Synth | mididelay |
|---|---|---|
| Price | $3.99 — better | $4.99 |
| Rating | 4.9 (7 ratings) | 5.0 (3 ratings) — better |
| Positive reviews | 66.7% of reviews | 100.0% of reviews — better |
| Number of ratings | 7 — better | 3 |
| Update frequency | Every 5 days — better | Every 10 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 14 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Cem Olcay | Alexey Nadzharov |
Customer experience
FuncBud Math Sequencer & Synth
mididelay
In-app purchases
FuncBud Math Sequencer & Synth
No in-app purchases
mididelay
No in-app purchases
Questions
Is FuncBud Math Sequencer & Synth free?
Is mididelay free?
Which has better reviews, FuncBud Math Sequencer & Synth or mididelay?
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