Comparison

ToneShaper vs FuncBud Math Sequencer & Synth

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

Head to head
About

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.

Highlights
  • 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
Read full description

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.

About

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.

Highlights
  • Mathematical function builder
  • Sequence chaining and repetition
  • Conditional and random functions
  • Key, scale, and octave control
  • Adjustable sequencer parameters
  • MIDI output
  • AUv3 plugin support
Features
Read full description

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

ToneShaper4 screens
FuncBud Math Sequencer & Synth4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard4 real differences · 6 level
ToneShaper versus FuncBud Math Sequencer & Synth: the parameters behind the verdict, then further details
ParameterToneShaperFuncBud Math Sequencer & Synth
PriceFree — better$3.99
Rating5.0 (3 ratings) — better4.9 (7 ratings)
Positive reviews100.0% of reviews — better66.7% of reviews
Number of ratings37 — better
Update frequencyEvery 6 daysEvery 5 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterPaid
DevicesiPhone, iPad, MaciPhone, iPad, iPod
Requires iOS16.413.0 — better
Further details — not scored
Size5 MB14 MB
Age rating4+4+
DeveloperLimit Point SoftwareCem Olcay

Customer experience

ToneShaper

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

FuncBud Math Sequencer & Synth

All ratings7 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews6 reviews
Positive66.7%
Neutral16.7%
Negative16.7%

In-app purchases

None

ToneShaper

No in-app purchases

None

FuncBud Math Sequencer & Synth

No in-app purchases

Questions

Is ToneShaper free?
ToneShaper is free to download, with no in-app purchases.
Is FuncBud Math Sequencer & Synth free?
FuncBud Math Sequencer & Synth costs $3.99, with no in-app purchases.
Which has better reviews, ToneShaper or FuncBud Math Sequencer & Synth?
ToneShaper is rated higher. ToneShaper averages 5.0 out of 5 from 3 ratings, while FuncBud Math Sequencer & Synth averages 4.9 from 7 ratings.
Do ToneShaper or FuncBud Math Sequencer & Synth have ads?
Neither ToneShaper nor FuncBud Math Sequencer & Synth shows ads.
Which is updated more often, ToneShaper or FuncBud Math Sequencer & Synth?
ToneShaper ships an update every 6 days, and FuncBud Math Sequencer & Synth every 5 days. Most recently, ToneShaper was updated on June 1, 2026 and FuncBud Math Sequencer & Synth on September 21, 2026.

Other comparisons