ToneShaper vs FuncBud Math Sequencer & Synth
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ToneShaper
Design unique audio tones by graphically plotting frequency over time. Add points to define shapes, adjust frequency ranges and duration, and export your creations as WAV files. Explore a library of sample tone shapes to begin experimenting.
- Graphical frequency plotting
- Add and drag points to shape tones
- Adjust frequency range
- Set cycle duration
- Export audio to WAV
- Library of sample tone shapes
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Create cycles with tone shapes of smoothly varying frequency by plotting frequency at specific times. Tap the library button to pick from a selection of sample tone shapes to get started. Tap in the plot view to add points with coordinates (frequency, time). Drag to move points, but limited by the neighbors time. Alternatively, drag in the draw tab to add points, then apply them to set the points in the plot view. Adjust the frequency range slider to limit the bandwidth. Adjust the duration slider to specify the cycle period. Finally, in the export view you can save the audio to a WAV file with a chosen number of cycles. The duration of the audio is limited by the maximum duration, which therefore also limits the number of cycles in the audio file.
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 price: ToneShaper at Free against FuncBud Math Sequencer & Synth's $3.99. ToneShaper also leads on review sentiment (100% vs 67%). FuncBud Math Sequencer & Synth's advantage is iOS requirement (13.0 vs 16.4). On rating, ratings volume, update cadence and ads 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
ToneShaper is free to download; FuncBud Math Sequencer & Synth costs $3.99 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 — 5.0 for ToneShaper against 4.9 for FuncBud Math Sequencer & Synth. Both are backed by a comparable volume of ratings — 3 and 7 respectively. Written reviews are what separate them: 100% of ToneShaper's written reviews are positive against 67% of FuncBud Math Sequencer & Synth's.
ToneShaper ships an update every 6 days, FuncBud Math Sequencer & Synth every 5 days. The most recent releases landed on June 1, 2026 and September 21, 2026 respectively.
| Parameter | ToneShaper | FuncBud Math Sequencer & Synth |
|---|---|---|
| Price | Free — better | $3.99 |
| Rating | 5.0 (3 ratings) — better | 4.9 (7 ratings) |
| Positive reviews | 100.0% of reviews — better | 66.7% of reviews |
| Number of ratings | 3 | 7 — better |
| Update frequency | Every 6 days | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Requires iOS | 16.4 | 13.0 — better |
| Further details — not scored | ||
| Size | 5 MB | 14 MB |
| Age rating | 4+ | 4+ |
| Developer | Limit Point Software | Cem Olcay |
Customer experience
ToneShaper
FuncBud Math Sequencer & Synth
In-app purchases
ToneShaper
No in-app purchases
FuncBud Math Sequencer & Synth
No in-app purchases
Questions
Is ToneShaper free?
Is FuncBud Math Sequencer & Synth free?
Which has better reviews, ToneShaper or FuncBud Math Sequencer & Synth?
Do ToneShaper or FuncBud Math Sequencer & Synth have ads?
Which is updated more often, ToneShaper or FuncBud Math Sequencer & Synth?
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