Comparison

FuncBud Math Sequencer & Synth vs JAX ONE Frequency Shifter

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

Head to head
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
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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.

About

JAX ONE Frequency Shifter

This audio unit transforms audio streams into unique sounds using analog-modeled Bode-style frequency shifting. It's compatible with various Apple platforms and requires a host application to function.

Highlights
  • Analog-modeled audio unit
  • Bode-style frequency shifting
  • Universal app for Apple platforms
  • Transforms audio streams
  • Requires host application
Features
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More information on our website: https://audio.digitster.net The JAX ONE series is a new collection of analog modelled audio units (AUV3 app extensions), available on all Apople Silicon platforms and devices. The first item in the series is the JAX ONE Frequency Shifter Extended, a Bode style frequency shifter with useful modifications, available for transforming any audio stream into something completely new and unheard. This build is truly 'universal', meaning, unit is available for: - MacOS (Silicon) - iOS (iPhone) - iPadOS (iPads) - visionOS (Apple Vision Pro) Please note, that AudioUnits (AUv3) require a supporting host application to perform.

Screenshots

FuncBud Math Sequencer & Synth4 screens
JAX ONE Frequency Shifter4 screens

Verdict

The call

The clearest difference is price: FuncBud Math Sequencer & Synth at $5.99 against JAX ONE Frequency Shifter's $12.99. FuncBud Math Sequencer & Synth also leads on update cadence (every 6 days vs every 3 weeks) and ratings volume (8 vs 1). On rating, ads, in-app purchases and monetization model 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

FuncBud Math Sequencer & Synth costs $5.99 and JAX ONE Frequency Shifter $12.99 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 — 4.9 for FuncBud Math Sequencer & Synth against 5.0 for JAX ONE Frequency Shifter. That said, the two scores are not equally well evidenced: FuncBud Math Sequencer & Synth has 8 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

FuncBud Math Sequencer & Synth ships an update every 6 days, JAX ONE Frequency Shifter every 3 weeks. The most recent releases landed on October 15, 2026 and October 12, 2026 respectively.

Scorecard3 real differences · 7 level
FuncBud Math Sequencer & Synth versus JAX ONE Frequency Shifter: the parameters behind the verdict, then further details
ParameterFuncBud Math Sequencer & SynthJAX ONE Frequency Shifter
Price$5.99 — better$12.99
Rating4.9 (8 ratings)5.0 (1 ratings) — better
Positive reviews66.7% of reviews—
Number of ratings8 — better1
Update frequencyEvery 6 days — betterEvery 3 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better14.0
Further details — not scored
Size14 MB31 MB
Age rating4+4+
DeveloperCem OlcayJens Guell

Customer experience

FuncBud Math Sequencer & Synth

All ratings8 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews6 reviews
Positive66.7%
Neutral16.7%
Negative16.7%

JAX ONE Frequency Shifter

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

FuncBud Math Sequencer & Synth

No in-app purchases

None

JAX ONE Frequency Shifter

No in-app purchases

Questions

Is FuncBud Math Sequencer & Synth free?
FuncBud Math Sequencer & Synth costs $5.99, with no in-app purchases.
Is JAX ONE Frequency Shifter free?
JAX ONE Frequency Shifter costs $12.99, with no in-app purchases.
Which has better reviews, FuncBud Math Sequencer & Synth or JAX ONE Frequency Shifter?
JAX ONE Frequency Shifter is rated higher. FuncBud Math Sequencer & Synth averages 4.9 out of 5 from 8 ratings, while JAX ONE Frequency Shifter averages 5.0 from 1 ratings.
Do FuncBud Math Sequencer & Synth or JAX ONE Frequency Shifter have ads?
Neither FuncBud Math Sequencer & Synth nor JAX ONE Frequency Shifter shows ads.
Which is updated more often, FuncBud Math Sequencer & Synth or JAX ONE Frequency Shifter?
FuncBud Math Sequencer & Synth ships an update every 6 days, and JAX ONE Frequency Shifter every 3 weeks. Most recently, FuncBud Math Sequencer & Synth was updated on October 15, 2026 and JAX ONE Frequency Shifter on October 12, 2026.

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