Comparison

Theremin Synth vs Kalimba Pro

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

Kalimba Pro

Features
Read full description

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

Theremin Synth4 screens
Kalimba Pro2 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

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.

Scorecard3 real differences · 7 level
Theremin Synth versus Kalimba Pro: the parameters behind the verdict, then further details
ParameterTheremin SynthKalimba Pro
Price$2.99$0.99 — better
Rating3.2 (6 ratings) — better—
Positive reviews63.6% of reviews—
Number of ratings6 — better—
Update frequencyEvery 2 months — betterEvery 20 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.1 — better15.0
Further details — not scored
Size1 MB20 MB
Age rating4+4+
DeveloperLuke PhillipsDmytro Denys

In-app purchases

None

Theremin Synth

No in-app purchases

None

Kalimba Pro

No in-app purchases

Questions

Is Theremin Synth free?
Theremin Synth costs $2.99, with no in-app purchases.
Is Kalimba Pro free?
Kalimba Pro costs $0.99, with no in-app purchases.
Do Theremin Synth or Kalimba Pro have ads?
Neither Theremin Synth nor Kalimba Pro shows ads.
Which is updated more often, Theremin Synth or Kalimba Pro?
Theremin Synth ships an update every 2 months, and Kalimba Pro every 20 months. Most recently, Theremin Synth was updated on October 16, 2026 and Kalimba Pro on October 20, 2026.

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