Comparison

Sunrizer synth vs LE04 | AR

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

Head to head
About

Sunrizer synth

This virtual analog synthesizer offers a rich, warm sound with advanced features like SuperSaw emulation and morphing parameter control. It integrates seamlessly with MIDI hardware and sequencers, providing a professional-grade sound design experience on iOS.

Highlights
  • SuperSaw sound emulation
  • Dual filters with configurable routing
  • Morph Group for parameter control
  • CoreMidi and background audio support
  • Multi-mode oscillator multiplication
  • Microtuning support
Features
Read full description

"This really is the synth that keeps on giving! Inspiration and intuition truly blend together in this musical instrument." Alan Parsons Sunrizer Synth is a virtual analog synthesizer that takes the definition of iOS synthesizer to the next level. Thanks to carefully designed architecture and heavy usage of coprocessor it blurs the boundaries between iOS and hardware synthesizers. Sunrizer was built to perform and works perfectly with any MIDI keyboard or sequencer. A lot of research has been done in order to achieve unique character, warmth and clarity. HIGHLIGHTS · True SuperSaw sound emulation, first found in the legendary Roland JP-8000 synthesizer. SuperSaw is a layered waveform consisting of multiple saw waves which are detuned to create an extremely full and epic sound. · Two filters per voice with configurable routing. 16 filter types available, including less common like Comb, Formant or Frequency shifter. · The Morph Group function lets you continuously morph of up to 30 parameters in a sound (including effects), using only the modulation wheel. · Full support for CoreMidi, MIDI mapping, Virtual Midi Ports and background audio. · Multi mode lets you multiply oscillators to get unbelievably fat and full sound. · Support for microtuning - load scl and tun files. Create fascinating microtonal music which uses intervals not found in the Western system of 12 equal intervals to the octave. OSCILLATORS · 2 warm-sounding analog modelled oscillators, 2 sub-oscillators (except SuperSaw). Available waveforms: Saw, PWM pulse,Triangle, SuperSaw, FM (frequency of phase modulation). 6 oscillators per voice in multi-sono mode. · Oscillator 2 hard-sync and configurable routing · FM (true frequency modulation) and PM mode · Osc-mix, ring modulator · White noise oscillator FLEXIBLE MULTI FILTERS · Two independent filters per voice with configurable routing. Filter types: LPF, HPF, BPF, Analog LPF, Notch, Comb, All pass, Power LPF, Power BPF, Wave shaper, Resonator, Resampler, LPF+Resampler, Frequency shifter. · Configurable routing: serial or parallel with bypass option. · ADSR envelope, keyboard tracking and full LFO control. MODULATION · Two LFOs per voice. It's possible to assign each LFO to almost any parameter. 3 LFO running modes: trigger, 1 shot, global. 6 waveforms, phase and fade-in knobs. · The Morph Group function lets you continuously morph of up to 30 parameters in a sound (including effects), using only the modulation wheel. · Two Modulation ADSR Envelopes for amplitude and filters cutoff. · Pitch and modulation wheels. EFFECTS · A number of effects are built in: distortion, hi-q reverb, chorus, rotary speaker simulation, equalizer, phaser and stereo delay. Dual-band FX processing. ARPEGGIATOR · Sunrizer incorporates very powerful programmable arpeggiator. You should think of it more like a small step sequencer. OTHER FEATURES · Over 380 presets, 7 additional banks available for FREE in web library (more coming soon) · Hold button allows you to to keep notes sustaining until you play new notes · With Chord Memory function you can play the chord by only pressing single keys · Phrase sequencer · Compatible with AudioBus · Adjustable polyphony: 6-20 voices · Playback modes: poly, solo, arp · Built-in recorder supporting AudioCopy, DropBox and iTunes file sharing. · Supports AUv3, MIDI, IAA, AudioBus 2.0 Visit www.beepstreet.com for user manual and audio demos. * Sunrizer is now available on Mac and PC, check our website for more info "Specs aside, the most important thing is the sound… and it’s great." musicradar.com "Sunrizer is the first truly mature polyphonic synth for the iPad, a real, smooth and powerful sounding option for all sorts of stage and studio performances." Mark Jenkins, author "Analog Synthesizers"

About

LE04 | AR

This app emulates a classic 1980s analog drum machine, offering a hybrid synth/sample-based approach to beat creation. It provides intuitive controls for live tweaking and pattern switching, making it ideal for both studio work and live performance.

Highlights
  • Hybrid synth/sample-based drum creation
  • AUv3 plugin support
  • Intuitive controls for live tweaking
  • Pattern switching for live performance
  • Ableton Link integration
  • MIDI trigger and pattern support
Features
Currently charting
Read full description

Inspired by dusty old circuits from 1983... Sounds Analog and Alive. Create your own sound. Your own beat. Your own vibe. This app is inspired by a specific piece of drum machine hardware. "The AudioKit 909 is PERFECT, fantastic job!" - Jakob Haq, iOS YouTuber "Very cool..I really like the vibe of it!" – J Miles, Grammy-winning producer (Michael Jackson) + Hybrid Synth/sample based drum creation + AUv3 (Use as plugin in GarageBand, AUM, Cubasis 3, BM3, etc) + Easy to use controls. Create your own sound. Live tweaks. + Exclusive special sauce. Vibe it out. + Ableton Link if you want to rock it standalone Tweak the knobs. This is a drum machine that is meant to be PLAYED. Switch Patterns on screen (or with MIDI) to create new creations on the fly for live performance or songwriting. It's like getting an expensive piece of vintage hardware on your iPhone and iPad. Small & mighty: Entire app less than 20mb (on most devices) WEBSITE: audiokitpro.com/analog909 REQUIREMENTS: iPhone 6s and above screen size. Requires iOS 11 and above. Will not work with 1st generation SE phones. MIDI Guide: + MIDI for drum triggers (Bass Drum, Snare, etc) start on "C" Note 36 (C1 in GarageBand) + MIDI for pattern triggers start on "C" Note 12 (C-1 in GarageBand) COMING: + AUv3 automation coming to AUM + MIDI CC and MIDI Learn coming + Better AUv3 timing coming. For now, try lowering buffer for quicker latency + MIDI Out This app is part of our Limited Edition App Series: https://audiokitpro.com/appdrops Thank you for your support. Looking forward to hearing your creations, please tag @audiokitpro on Instagram and Twitter :) NOTE: This app has no affiliation with Roland. It is a brand new synth drum machine for your enjoyment.

Screenshots

Sunrizer synth3 screens
LE04 | AR4 screens

Verdict

The call

The clearest difference is price: LE04 | AR at $2.99 against Sunrizer synth's $12.99. LE04 | AR also leads on update cadence (every 3 days vs every 6 months) and chart position (#120 vs unranked). Sunrizer synth's advantage is review sentiment (88% vs 69%). 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

Sunrizer synth costs $12.99 and LE04 | AR $2.99 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 — 4.7 for Sunrizer synth against 4.8 for LE04 | AR. That said, the two scores are not equally well evidenced: LE04 | AR has 1.5K ratings behind it against 184, so its average is the more settled of the two. Written reviews are what separate them: 88% of Sunrizer synth's written reviews are positive against 69% of LE04 | AR's.

UpkeepUpdate frequency

Sunrizer synth ships an update every 6 months, LE04 | AR every 3 days. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.

Scorecard5 real differences · 6 level
Sunrizer synth versus LE04 | AR: the parameters behind the verdict, then further details
ParameterSunrizer synthLE04 | AR
Price$12.99$2.99 — better
Rating4.7 (184 ratings)4.8 (1.5K ratings) — better
Positive reviews87.8% of reviews — better69.0% of reviews
Number of ratings1841.5K — better
Update frequencyEvery 6 monthsEvery 3 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
Best chart rank—#120 — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS10.3 — better11.0
Further details — not scored
Size28 MB25 MB
Age rating4+4+
DeveloperBeepStreetCooperator Design

Customer experience

Sunrizer synth

All ratings183 ratings
Positive90.2%
Neutral5.5%
Negative4.4%
Written reviews303 reviews
Positive87.8%
Neutral5.3%
Negative6.9%

LE04 | AR

All ratings1,500 ratings
Positive96.5%
Neutral2.1%
Negative1.4%
Written reviews226 reviews
Positive69.0%
Neutral12.8%
Negative18.1%

User reviews

Sunrizer synth

From 184 App Store ratings

What we love

  • 🎨 Exceptional sound quality
  • 👍 Intuitive and easy-to-use interface
  • 🎹 Powerful and flexible synth engine
  • 💡 Excellent preset library
  • 🎚️ Comprehensive modulation and effects

Room to improve

  • 🐛 Occasional crashes and glitches
  • 🔌 Compatibility issues with certain DAWs
  • 🔇 Limited audio export options
  • 🧭 Confusing preset management

LE04 | AR

From 1.5K App Store ratings

What we love

  • 🚀 Easy to use
  • 🚀 Intuitive interface
  • 🚀 Straightforward workflow
  • 🔊 Great sound quality
  • 🔊 Authentic 909 sound

Room to improve

  • 🐛 Crashes when saving patterns
  • 🐛 Timing/sync issues with other apps
  • 🔌 Doesn't record MIDI/audio in DAWs
  • 📺 Screen doesn't fit some devices
  • 🔇 Limited sound customization options

Bugs and requests

Sunrizer synth

Reported bugs

3 issues
  • Synth freezes when loading certain presets
  • Inconsistent behavior when using multiple instances
  • Graphical issues on newer iPad models

Requested features

4 requests
  • Improved MIDI integration and control
  • Expanded arpeggiator and sequencing capabilities
  • More advanced sound design tools
  • Ability to save custom tunings

LE04 | AR

Reported bugs

3 issues
  • Crashes on startup for some users
  • Volume/parameter changes not retained
  • Timing issues when synced to other apps

Requested features

5 requests
  • Pattern chaining/song mode
  • Ability to load custom samples
  • Separate audio outputs for drums
  • Longer pattern length options
  • Midi learn and mapping capabilities

In-app purchases

None

Sunrizer synth

No in-app purchases

None

LE04 | AR

No in-app purchases

Questions

Is Sunrizer synth free?
Sunrizer synth costs $12.99, with no in-app purchases.
Is LE04 | AR free?
LE04 | AR costs $2.99, with no in-app purchases.
Which has better reviews, Sunrizer synth or LE04 | AR?
LE04 | AR is rated higher. Sunrizer synth averages 4.7 out of 5 from 184 ratings, while LE04 | AR averages 4.8 from 1.5K ratings.
Do Sunrizer synth or LE04 | AR have ads?
Neither Sunrizer synth nor LE04 | AR shows ads.
Which is updated more often, Sunrizer synth or LE04 | AR?
Sunrizer synth ships an update every 6 months, and LE04 | AR every 3 days. Most recently, Sunrizer synth was updated on October 26, 2026 and LE04 | AR on October 25, 2026.

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