Comparison

Theremin Synth vs RedNova

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

Head to head
About

Theremin Synth

Create unique soundscapes with this multitouch synthesizer. Record, loop, and overdub your creations, then export them as WAV files to share. Experiment with various waveforms and effects for endless sonic possibilities.

Highlights
  • Multitouch synthesis
  • Record, loop, and overdub
  • Adjustable delay, feedback, and scuzz effects
  • Four waveform options
  • Export recordings as WAV files
  • Offline functionality
Features
Read full description

This is a multitouch synth instrument. Play it by touching and swiping the screen, changing the waveforms and sliding the effects to create anything from traditional sci-fi theremin sounds to deep scuzzy soundscapes. Use the looper controls to record, loop and overdub layers. Then if you wish to save or share your recording, hit the download button to send your wav file to other compatible apps like Messages, Email, Dropbox etc. The original Theremin went live in 2014 on the web at femurdesign.com/theremin. Over a million hits later and hundreds of requests for a record button, I have redesigned it. Now the Theremin is ready for you to experiment with. Happy playing! -- SPECIFICATIONS -- • Record, loop and overdub options. • Multitouch allows up to 8 tones to be played simultaneously with your fingers • 3 sliders: delay, feedback and scuzz • 4 waveforms: sine, square, triangle and saw • No internet needed, works both online and offline • Download the loop as a .wav file • Loops can be shared with other apps like Mail, Message and more. • 1000+ installs • Compatible with iOS versions 8 - 10 • Optimized for iPhone, iPad & iPad Pro -- REVIEWS -- Gizmodo "Just mess around! Twiddle those faders! Swipe and click with reckless abandon! Turn the volume all the way up, give the dog a panic fit, and make your neighbours think the street's being invaded by giant cabbage people from planet Zok. Trust me, this will never get old.” Dangerous Minds “New online theremin simulator kind of sounds cooler than the real thing. Check it out and annoy your co-workers.” Mashable “Messing around with this virtual theremin is completely addicting” -- CONTACT -- To find out about my other musical app projects, please go to femurdesign.com and share your loops with me on Facebook and Twitter. Facebook: facebook.com/femurdesign Twitter: @femurdesign For any queries and support contact me here: femurdesign.com/support

About

RedNova

This audio plugin offers intelligent compression and spatial positioning for professional sound design. It adapts to your audio, allowing you to control dynamics and place sounds forward for presence or back for warmth. Transform recordings into spatially positioned compositions with intuitive controls.

Highlights
  • Intelligent adaptive compression
  • VCA compressor with analog saturation
  • Forward/back spatial positioning
  • Visual position orb feedback
  • Advanced sidechain control
  • AUv3 plugin format
Features
Read full description

RedNova: Intelligent Compressor + Spatial Positioning Welcome to a new genre of professional audio plugins. RedNova is the first of the Nova series of plugins by Simon Alexander that combines unique and musical audio effects with intuitive forward/back spatial positioning. Intelligent processing adapts to your audio while giving you complete control over effect dynamics and mix placement. From punchy upfront compression to warm distant textures, discover how one brilliantly designed plugin transforms flat or unruly recordings into professionally processed, spatially positioned compositions! Instantly Transform Your Dynamics & Depth: * Intelligent compression that adapts to your source material automatically * Professional VCA compressor with musical saturation and life-like analog circuitry dynamics * Move sounds forward for clarity and presence or back for warmth and space * Watch the position orb grow larger as sounds move forward, smaller as they recede * Advanced sidechain control over compression AND spatial positioning Made for Everyone: * Producers: Get broadcast and album-quality compression with professional spatial control * Beatmakers: Compress drums while positioning elements in mix depth * Singer-Songwriters: Gentle vocal compression to driving saturation with forward positioning for presence * Podcasters: Broadcast-safe compression with spatial separation for voice and music * Beginners: Set-and-forget intelligent processing with simple visual controls * Experts: Advanced sidechain routing with multi-parameter control Professional Features, Intelligently Simple: Intelligent Compressor: 1. Adaptive Processing - Content-aware compression that automatically adjusts to your source material 2. Safety-First Design - Multi-stage limiting ensures broadcast-safe output 3. Musical Response - Professional VCA style compressor with enhanced musical saturation 4. Thread-Safe Architecture - Lock-free processing prevents audio dropouts in demanding sessions SuperSitter Positioning: 1. Forward - Brings sounds closer with intelligent EQ and transient enhancement 2. Back - Creates warm distance with spatial processing and controlled filtering 3. Center - Complete transparency when positioning isn't needed 4. Visual Feedback - Dynamic orb scaling shows exact spatial position Advanced Sidechain Control: 1. Multi-Target Control - Route sidechain to compression threshold, ratio, AND forward/back position 2. Global or Individual - Control all parameters together or individually 3. Self-Signal Mode - Use the track's own signal for dynamic control (DAW dependent) 4. LED Indicators - Color-coded feedback shows which parameters are under sidechain control Technical Excellence: * AUv3 Plugin Format for all iOS/iPadOS DAWs that utilize them * Real-time intelligent content analysis with adaptive processing * CPU-efficient design allows multiple instances without performance issues * Zero-latency processing with automatic phase alignment * Broadcast-safe output limiting with extended dynamic range * Full parameter automation support with smooth transitions * Touch-optimized interface with floating value displays * 20 professionally crafted presets to get you started on any kind of track RedNova represents a new genre of audio plugins combining unique and intelligent audio effects with easy and intuitive spatial positioning. Download RedNova now and hear professional results in seconds! RedNova's intelligent design makes studio and broadcast-quality compression and spatial positioning accessible to everyone.

Screenshots

Theremin Synth4 screens
RedNova3 screens

Verdict

The call

The clearest difference is rating: RedNova at 5.0 against Theremin Synth's 3.2. RedNova also leads on update cadence (every 4 weeks vs every 2 months). Theremin Synth's advantage is price ($2.99 vs $9.99) and ratings volume (6 vs 1). On ads, in-app purchases, monetization model 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

Theremin Synth costs $2.99 and RedNova $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

RedNova holds the better App Store score, 5.0 against 3.2. That said, the two scores are not equally well evidenced: Theremin Synth has 6 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Theremin Synth ships an update every 2 months, RedNova every 4 weeks. The most recent releases landed on October 1, 2026 and September 17, 2026 respectively.

Scorecard4 real differences · 6 level
Theremin Synth versus RedNova: the parameters behind the verdict, then further details
ParameterTheremin SynthRedNova
Price$2.99 — better$9.99
Rating3.2 (6 ratings)5.0 (1 ratings) — better
Positive reviews63.6% of reviews—
Number of ratings6 — better1
Update frequencyEvery 2 monthsEvery 4 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.112.0 — better
Further details — not scored
Size1 MB17 MB
Age rating4+4+
DeveloperLuke PhillipsSimon Alexander

Customer experience

Theremin Synth

All ratings6 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews11 reviews
Positive63.6%
Neutral0.0%
Negative36.4%

RedNova

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

In-app purchases

None

Theremin Synth

No in-app purchases

None

RedNova

No in-app purchases

Questions

Is Theremin Synth free?
Theremin Synth costs $2.99, with no in-app purchases.
Is RedNova free?
RedNova costs $9.99, with no in-app purchases.
Which has better reviews, Theremin Synth or RedNova?
RedNova is rated higher. Theremin Synth averages 3.2 out of 5 from 6 ratings, while RedNova averages 5.0 from 1 ratings.
Do Theremin Synth or RedNova have ads?
Neither Theremin Synth nor RedNova shows ads.
Which is updated more often, Theremin Synth or RedNova?
Theremin Synth ships an update every 2 months, and RedNova every 4 weeks. Most recently, Theremin Synth was updated on October 1, 2026 and RedNova on September 17, 2026.

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