Annoydio vs FuncBud Math Sequencer & Synth
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Annoydio
Create and manipulate custom sounds using your device's microphone or iTunes file sharing. Assign sounds to pads, alter their frequency, play them in reverse, and add effects. Connect MIDI keyboards for interactive performance.
- Assign and play sounds on a grid of pads
- Create custom sounds with device microphone
- Import custom sounds via iTunes file sharing
- Manipulate sound parameters (frequency, reverse, loop)
- Apply audio effects (distortion, delay)
- Connect MIDI keyboards for polyphonic playback
- Supports Inter-App Audio as sound module/MIDI device
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Annoydio has a grid of pads which you can assign, manipulate, and play sounds. There are several built in sounds you can assign to any of the pads. In the Library you can create your own custom sounds using your device's microphone. You can also add custom sounds through iTunes file sharing. You can manipulate the sounds by changing the frequency, playing in reverse, looping, adding effects such as distortion and delay. You can also change parameters such as attack, decay, sustain, and release. You can connect a MIDI keyboard and play the current sound with full polyphony. On the iPad version there is a popup keyboard. Annoydio also supports Inter-App Audio as a sound module and MIDI device. You can use Annoydio as an instrument to add beats or effects to songs in apps like Garage Band. Short demonstration video here http://www.youtube.com/watch?v=EzuQhLxMxeM
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.
Screenshots
Verdict
The clearest difference is review sentiment: FuncBud Math Sequencer & Synth at 67% against Annoydio's 20%. FuncBud Math Sequencer & Synth also leads on rating (4.9 vs 2.8) and price ($3.99 vs $4.99). 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
Annoydio costs $4.99 and FuncBud Math Sequencer & Synth $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.
FuncBud Math Sequencer & Synth holds the better App Store score, 4.9 against 2.8. Both are backed by a comparable volume of ratings — 5 and 7 respectively. Written reviews point the same way: 20% of Annoydio's written reviews are positive against 67% of FuncBud Math Sequencer & Synth's.
Annoydio ships an update every 10 days, FuncBud Math Sequencer & Synth every 5 days. The most recent releases landed on September 14, 2026 and September 21, 2026 respectively.
| Parameter | Annoydio | FuncBud Math Sequencer & Synth |
|---|---|---|
| Price | $4.99 | $3.99 — better |
| Rating | 2.8 (5 ratings) | 4.9 (7 ratings) — better |
| Positive reviews | 20.0% of reviews | 66.7% of reviews — better |
| Number of ratings | 5 | 7 — better |
| Update frequency | Every 10 days | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.4 | 13.0 — better |
| Further details — not scored | ||
| Size | 23 MB | 14 MB |
| Age rating | 4+ | 4+ |
| Developer | Anthony Kitowicz | Cem Olcay |
Customer experience
Annoydio
FuncBud Math Sequencer & Synth
In-app purchases
Annoydio
No in-app purchases
FuncBud Math Sequencer & Synth
No in-app purchases
Questions
Is Annoydio free?
Is FuncBud Math Sequencer & Synth free?
Which has better reviews, Annoydio or FuncBud Math Sequencer & Synth?
Do Annoydio or FuncBud Math Sequencer & Synth have ads?
Which is updated more often, Annoydio or FuncBud Math Sequencer & Synth?
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