Comparison

BLEASS Alpha Synthesizer vs polybeat

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

Head to head
About

BLEASS Alpha Synthesizer

This versatile polyphonic synthesizer offers a virtual analog sound engine inspired by classic hardware. It provides intuitive sound design tools, efficient CPU usage, and a unique motion sequencer for expressive modulation. Explore a vast library of presets and create unique sounds for your music.

Highlights
  • Virtual analog polyphonic stereo synthesizer
  • Intuitive sound design interface
  • CPU efficient for live performance
  • Unique motion sequencer
  • Built-in arpeggiator
  • Over 200 factory presets
  • Audio Unit V3 compatible
Read full description

BLEASS Alpha Synthesizer is a versatile virtual analogue polyphonic synthesizer built for immediate, hands-on sound design. Its three oscillators combine variable waveshapes and pulse widths with unison, hard sync, cross modulation and ring modulation, while dual variable-state filters with drive add further colour and character. The streamlined interface follows the natural signal path, keeping powerful synthesis controls accessible at a glance. Bring sounds to life with three ADSR envelopes, two multi-waveform LFOs and extensive modulation possibilities, while the Motion Sequencer adds rhythmic and expressive movement that can work hand in hand with the built-in arpeggiator. MPE support extends the performance possibilities, and BLEASS' efficient audio engine keeps the experience smooth and responsive on mobile devices. A complete built-in effects section includes Overdrive, Bitcrusher, Tremolo, filtered ping-pong Delay and Reverb, adding everything from subtle movement to more radical processing directly within the synth. More than 200 factory presets provide ready-to-play sounds and starting points for your own creations. BLEASS Alpha Synthesizer can be used as a standalone app or AUv3 instrument on iPhone and iPad. Also available for Windows and macOS. More information and technical specifications available on: https://www.bleass.com/alpha/

About

polybeat

This advanced music production tool generates complex polyrhythmic and polymetric patterns. It offers extensive control over sequence length, step length, and step modulation for each drum voice. Requires an AUv3-compatible host or external sound source to produce audio.

Highlights
  • Configurable sequence and step length per drum voice
  • Modulation of sequencer steps (accent, ratchet, chance, offset)
  • Sample-accurate sequencing engine
  • Sequence transformation actions (shift, rotate, randomize)
  • AUv3 preset and state saving
  • Offline functionality
  • No ads or in-app purchases
Features
Read full description

polybeat is an advanced and extremely flexible drum and percussion sequencer able to generate complex polyrhythmic and polymetric rhythmic patterns. nb: polybeat does not make sound by itself, you will need to load it in an AUv3-compatible host (such as AUM, Audiobus, ApeMatrix, Nanostudio 2, etc.) or connect it to an external drum machine, synthesizer, computer or any other sound generating device. features: - independently configurable sequence length per drum voice (ranging from 1 to 32 steps) - independently configurable step length per drum voice (ranging from double whole notes to 64th notes, including tuplets and dotted notes) - every sequencer step can be modulated by the following attributes: - accent on/off - ratchet (note repeats) - skip (note every *n* loops) - chance - timing offset - sample-accurate sequencing engine - slick and responsive native UI - undo/redo - individual drum voices can be muted or solo'ed - sequences can be instantly transformed by the following actions: - shift left/right - rotate - randomize - mirror - reverse - double - bisect - full AUv3 preset- and state-saving - ability to copy and paste patterns between instances of the plugin - mapping presets for popular AUv3 drum apps and hardware drum machines - includes musical scale presets for polybeat to be used as a melodic sequencer - responds to MIDI input for switching and selecting patterns, as well as performing pattern transformations - works offline - no push notifications - no ads or in-app purchases - no third-party behavioural tracking tools ongoing development and support, many new features on the roadmap

Screenshots

BLEASS Alpha Synthesizer4 screens
polybeat4 screens

Verdict

The call

The clearest difference is price: polybeat at $7.99 against BLEASS Alpha Synthesizer's $14.99. polybeat also leads on update cadence (fortnightly vs every 2 months) and iOS requirement (11.0 vs 15.0). BLEASS Alpha Synthesizer's advantage is rating (4.9 vs 4.5) and review sentiment (86% vs 72%). On ads, in-app purchases and device support 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

BLEASS Alpha Synthesizer costs $14.99 and polybeat $7.99 up front. BLEASS Alpha Synthesizer sells 10 one-off in-app purchases and polybeat sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

BLEASS Alpha Synthesizer holds the better App Store score, 4.9 against 4.5. That said, the two scores are not equally well evidenced: BLEASS Alpha Synthesizer has 108 ratings behind it against 20, so its average is the more settled of the two. Written reviews point the same way: 86% of BLEASS Alpha Synthesizer's written reviews are positive against 72% of polybeat's.

UpkeepUpdate frequency

BLEASS Alpha Synthesizer ships an update every 2 months, polybeat fortnightly. The most recent releases landed on October 16, 2026 and October 11, 2026 respectively.

Scorecard7 real differences · 3 level
BLEASS Alpha Synthesizer versus polybeat: the parameters behind the verdict, then further details
ParameterBLEASS Alpha Synthesizerpolybeat
Price$14.99$7.99 — better
Rating4.9 (108 ratings) — better4.5 (20 ratings)
Positive reviews86.1% of reviews — better72.2% of reviews
Number of ratings108 — better20
Update frequencyEvery 2 monthsFortnightly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases — betterPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.011.0 — better
Further details — not scored
Size38 MB18 MB
Age rating+44+
DeveloperBLEASSCorne Driesprong

Customer experience

BLEASS Alpha Synthesizer

All ratings108 ratings
Positive97.2%
Neutral1.9%
Negative0.9%
Written reviews36 reviews
Positive86.1%
Neutral11.1%
Negative2.8%

polybeat

All ratings20 ratings
Positive80.0%
Neutral15.0%
Negative5.0%
Written reviews18 reviews
Positive72.2%
Neutral22.2%
Negative5.6%

In-app purchases

10 purchases

BLEASS Alpha Synthesizer

One-time10
  • Sound Of Izrael Preset Pack$2.99
  • Red Sky Lullaby Preset Pack$2.99
  • MPE Preset Pack #1$3.99
Show 7 more
  • Lily Jordy Preset Pack$3.99
  • The GarageBand Guide Pack$3.99
  • Hoops Collection #1$3.99
  • Yawdel Preset Pack$3.99
  • Funk Preset Pack$3.99
  • Torley Preset Pack$4.99
  • The Sound Test Room Pack$4.99
2 purchases

polybeat

One-time2
  • Small tip$1.99
  • Big tip$5.99

Questions

Is BLEASS Alpha Synthesizer free?
BLEASS Alpha Synthesizer costs $14.99, and also offers in-app purchases.
Is polybeat free?
polybeat costs $7.99, and also offers in-app purchases.
Which has better reviews, BLEASS Alpha Synthesizer or polybeat?
BLEASS Alpha Synthesizer is rated higher. BLEASS Alpha Synthesizer averages 4.9 out of 5 from 108 ratings, while polybeat averages 4.5 from 20 ratings.
Do BLEASS Alpha Synthesizer or polybeat have ads?
Neither BLEASS Alpha Synthesizer nor polybeat shows ads.
Which is updated more often, BLEASS Alpha Synthesizer or polybeat?
BLEASS Alpha Synthesizer ships an update every 2 months, and polybeat fortnightly. Most recently, BLEASS Alpha Synthesizer was updated on October 16, 2026 and polybeat on October 11, 2026.

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