Theremin Synth vs Kalimba Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Multitouch synthesis
- Record, loop, and overdub
- Adjustable delay, feedback, and scuzz effects
- Four waveform options
- Export recordings as WAV files
- Offline functionality
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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
Kalimba Pro
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A simple, minimalist music app where your can to play the kalimba and sansula. • 2 instruments (Kalimba, Sansula) • Optional reverb effect • Record the music you're playing • Share your records • Simple • Relaxing • No ads
Screenshots
Verdict
The clearest difference is update cadence: Theremin Synth at every 2 months against Kalimba Pro's every 20 months. Theremin Synth also leads on iOS requirement (12.1 vs 15.0). Kalimba Pro's advantage is price ($0.99 vs $2.99). 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
Theremin Synth costs $2.99 and Kalimba Pro $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Theremin Synth ships an update every 2 months, Kalimba Pro every 20 months. The most recent releases landed on October 16, 2026 and October 20, 2026 respectively.
| Parameter | Theremin Synth | Kalimba Pro |
|---|---|---|
| Price | $2.99 | $0.99 — better |
| Rating | 3.2 (6 ratings) — better | — |
| Positive reviews | 63.6% of reviews | — |
| Number of ratings | 6 — better | — |
| Update frequency | Every 2 months — better | Every 20 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.1 — better | 15.0 |
| Further details — not scored | ||
| Size | 1 MB | 20 MB |
| Age rating | 4+ | 4+ |
| Developer | Luke Phillips | Dmytro Denys |
In-app purchases
Theremin Synth
No in-app purchases
Kalimba Pro
No in-app purchases









