Comparison

Lines vs BounceBud Physics Based MIDI

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

Head to head
About

Lines

This audio effect plugin transforms any signal into a wide spectrum of sounds, from lo-fi to distortion and feedback. It can also function as an experimental synthesizer, creating rhythms and soundscapes even without input.

Highlights
  • Creative signal mangling
  • Experimental synthesizer
  • Feedback-based sound design
  • Wide range of audio effects
  • Rhythm and soundscape generation
Features
Read full description

Lines is an effect plugin that crosses borders: it can be used as a creative mangler of all kinds of signals, ranging from lo-fi telephone sounds, lush phasing, warm distortions, crushing feedback, ring modulation and unique frequency shifting. But even without any input, it can be an experimental synthesizer based on feedback, allowing for a wide range of inspiring rhythms, pulses, and organic soundscapes. If you combine input and internal engines an unheard spectrum of sounds appears.

About

BounceBud Physics Based MIDI

This app generates MIDI notes through a unique physics-based system. Balls collide with customizable keyboards, triggering MIDI events. It offers extensive control over note scales, velocity, and MIDI channels for diverse musical creations.

Highlights
  • Physics-based generative MIDI sequencing
  • Customizable keyboards with MIDI note triggers
  • Adjustable ball count, speed, and size
  • Configurable key/scale, velocity, and octave ranges
  • Individual MIDI output per keyboard
  • MIDI input for 'shoot walls' interaction
  • Toggleable ball collision behavior
Features
Read full description

BounceBud is a physics based, generative MIDI sequncer. Each side of the app has a customizable keyboard that send a MIDI note when a ball collide with its key. You can specify the ball count, speed and size on the main screen with the knob controls.  In the settings menu, you can set the key/scale, velocity range, octave. range and MIDI channel settings of the keyboards. You can also specify the notes individually per keyboard. All keyboards share the same key/scale that could also be changed with BrainBud. Each keyboard has its own MIDI output, so you can play different audio apps with BounceBud at once. Or you can disable the keyboard sides you don't want to use. With a MIDI input (from a MIDI keyboard or a MIDI sequencer app) you can 'shoot walls' from the keyboards. Balls can interact with the walls and it introduce more randomness to your generative sequence. You can control each keyboard by assigning them different MIDI input channels in the settings menu. You can also toggle the ball collision behavior in the settings menu. Whether balls can collide with each other or not, it creates different, interesting sequences every time. The size variety and ball variety can be change in the ball settings section in the settings menu. It adds randomisation to the size and speed values. You can change the ball color theme in the settings menu as well! BounceBud is a MIDI app and it does not produce any sound on its own. You need to route BounceBud's MIDI outs to your audio app's MIDI input. The AUv3 plugin app needs and AUv3 host app such as AUM, Loopy Pro, Logic Pro, Cubasis, Nanostudio, apeMatrix etc.

Screenshots

Lines1 screens
BounceBud Physics Based MIDI4 screens

Verdict

The call

The clearest difference is price: BounceBud Physics Based MIDI at $3.99 against Lines's $19.99. BounceBud Physics Based MIDI also leads on update cadence (every 5 weeks vs every 13 months). On rating, review sentiment, ratings volume 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

Lines costs $19.99 and BounceBud Physics Based MIDI $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 Lines against 5.0 for BounceBud Physics Based MIDI. Both are backed by a comparable volume of ratings — 11 and 11 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

Lines ships an update every 13 months, BounceBud Physics Based MIDI every 5 weeks. The most recent releases landed on August 29, 2026 and September 21, 2026 respectively.

Scorecard2 real differences · 8 level
Lines versus BounceBud Physics Based MIDI: the parameters behind the verdict, then further details
ParameterLinesBounceBud Physics Based MIDI
Price$19.99$3.99 — better
Rating5.0 (11 ratings)5.0 (11 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings1111
Update frequencyEvery 13 monthsEvery 5 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better13.0
Further details — not scored
Size29 MB6 MB
Age rating4+4+
DeveloperAudioThing Ltd.Cem Olcay

Customer experience

Lines

All ratings11 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews5 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

BounceBud Physics Based MIDI

All ratings11 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews10 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Lines

No in-app purchases

None

BounceBud Physics Based MIDI

No in-app purchases

Questions

Is Lines free?
Lines costs $19.99, with no in-app purchases.
Is BounceBud Physics Based MIDI free?
BounceBud Physics Based MIDI costs $3.99, with no in-app purchases.
Which has better reviews, Lines or BounceBud Physics Based MIDI?
Lines and BounceBud Physics Based MIDI are both rated 5.0 out of 5 on the App Store, from 11 and 11 ratings respectively.
Do Lines or BounceBud Physics Based MIDI have ads?
Neither Lines nor BounceBud Physics Based MIDI shows ads.
Which is updated more often, Lines or BounceBud Physics Based MIDI?
Lines ships an update every 13 months, and BounceBud Physics Based MIDI every 5 weeks. Most recently, Lines was updated on August 29, 2026 and BounceBud Physics Based MIDI on September 21, 2026.

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