Comparison

TC vs VOSIS Pro

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

Head to head
About

TC

This app is a fully programmable multi-touch synthesizer for iPad. Create unique sounds using touch gestures, device motion, and a variety of on-board modules. Explore a vast sonic landscape with extensive customization options.

Highlights
  • 185 built-in presets
  • Unlimited user patches
  • Multi-touch and device motion control
  • 23 modular synthesis objects
  • Built-in recording and AudioCopy
  • Audiobus support
Read full description

TC-11 is the only fully programmable multi-touch synthesizer for the iPad. Choose from the 160 included presets, or build your own using touch controls, device motion, and on-board modules. Create music with the next evolution of synthesizer control! iDesignSound App of the Week 12.17.2011 - idesignsound.com "This thing is ALIVE! TC-11 is really fascinating and I'm having some fun experimenting with it. It is very, very cool!" - Jordan Rudess, keyboardist, Dream Theater "TC-11 is making my jaw drop every few minutes; realizing new and increasingly complex routing options. Rating: Essential." - Tim Webb, discchord.com "Creating, routing, configuring, and general tweaking is unbelievably robust and complex. This is a big leap forward in design. A madhouse of sonic possibilities at your touch." - David Israel, smitematter.com FEATURES: √ 185 built-in presets √ Unlimited user patches √ Audiobus + State Saving √ Fully controlled by multi-touch / device motion √ Built-in recording + AudioCopy √ 23 modular synthesis objects √ 22 oscillator waveforms √ 4 controller modules: AHDSR, LFO, Table, Sequencer √ Email custom patches to your friends √ Full display customization MULTI-TOUCH CONTROL: There are no on-screen knobs, keys, or sliders to fiddle with; all synthesis is driven by your multi-touch performance. Touch relationships like distances / angles / timings perform all the controller functions. It's just you and the full screen multi-touch performance area. EVERY synthesis parameter can be controlled by ANY multi-touch controller. The patch possibilities are limitless! DEVICE MOTION CONTROL: Use the iPad's accelerometer, gyroscope, and even the compass to attack your synthesis patch! Tilt and move the iPad to change any filter, effect, or module. You can create real vibrato by moving the iPad during performance, or change the speed of a sequencer by tilting forward and backward! SYNTHESIS: TC-11 has 8 voice polyphony for full, real-time synthesis. The audio engine has been highly optimized to deliver crisp, responsive performance. Choose from 22 oscillator waveforms, 3 oscillator types, 3 filter types, 4 unique effects, amplitude modulation, and panning control. Fully programmable AHDSR, LFO, and sequencer modules make TC-11 the most capable iOS synthesizer in the world. Use TC-11 in your band during live performances. Add TC-11 into your laptop orchestra. Experiment and create with the next evolution of synthesizer control! Download the complete user guide to read more: http://www.bitshapesoftware.com/instruments/tc-11/tc-11-user-guide-2.0.pdf

About

VOSIS Pro

Transform images into unique sounds and compose visual music. This tool offers advanced filters and MIDI control for experimental sound design and creative audio manipulation.

Highlights
  • Image to sound conversion
  • Advanced image filters
  • MIDI keyboard support
  • Customizable presets
  • Unlimited recording
  • Video file loading (iPad/Desktop)
Features
Read full description

VOSIS is a synthesizer combining audification of greyscale pixel data with several image filters. It is a tool for image sonification, visual music composition, and experimental sound design. The audification of pixel luminance values creates shape-timbre relationships. Pixel scan rate is controlled in terms of note interval, octave, and scale to give varying pitch between image regions. The ADSR envelope allows one to play images as a non-linear sequence of pitches with varying wavetable/timbre. VOSIS Pro adds several features to VOSIS useful for sound designers and musicians: Save and load custom presets, connect a MIDI keyboard and play regions with keys, map any control and region positions to MIDI CC, unlimited recording and screen mirroring with no watermark, downsampling/blur/sharpen, and tremolo filters, subdivide large regions into step sequence mode, load video files (iPad and Desktop versions only). Visit vosis.app for sound example, demo videos, and user guide!

Screenshots

TC4 screens
VOSIS Pro3 screens

Verdict

The call

The clearest difference is price: VOSIS Pro at $7.99 against TC's $24.99. VOSIS Pro also leads on device support (4 vs 2) and iOS requirement (13.0 vs 16.0). TC's advantage is review sentiment (88% vs 67%) and rating (4.8 vs 4.6). On update cadence, 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

TC costs $24.99 and VOSIS Pro $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

TC holds the better App Store score, 4.8 against 4.6. That said, the two scores are not equally well evidenced: TC has 68 ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 88% of TC's written reviews are positive against 67% of VOSIS Pro's.

UpkeepUpdate frequency

TC ships an update every 5 weeks, VOSIS Pro every 3 months. The most recent releases landed on October 21, 2026 and October 24, 2026 respectively.

Scorecard6 real differences · 4 level
TC versus VOSIS Pro: the parameters behind the verdict, then further details
ParameterTCVOSIS Pro
Price$24.99$7.99 — better
Rating4.8 (68 ratings) — better4.6 (7 ratings)
Positive reviews87.8% of reviews — better66.7% of reviews
Number of ratings68 — better7
Update frequencyEvery 5 weeks — betterEvery 3 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPadiPhone, iPad, iPod, Mac — better
Requires iOS16.013.0 — better
Further details — not scored
Size53 MB12 MB
Age rating4+4+
DeveloperBit ShapeLife Orange LLC

Customer experience

TC

All ratings68 ratings
Positive95.6%
Neutral1.5%
Negative2.9%
Written reviews172 reviews
Positive87.8%
Neutral2.3%
Negative9.9%

VOSIS Pro

All ratings7 ratings
Positive85.7%
Neutral14.3%
Negative0.0%
Written reviews12 reviews
Positive66.7%
Neutral25.0%
Negative8.3%

Bugs and requests

TC

Reported bugs

9 issues
  • App crashes upon opening after recent updates
  • Black screen crashes when launching
  • Crashes when adding patches to folders
  • Crashes within Audiobus after 13.1 update
  • AudioCopy button crashes on iPad 3
Show 4 more
  • Unable to download latest version
  • Glitches and crashes with complex patches
  • Audiobus integration issues causing crashes
  • Performance issues on older iPad models

Requested features

12 requests
  • MIDI support and DAW synchronization
  • Ability to record and playback motion gestures
  • Sample import and granular synthesis capabilities
  • Microtonal tuning support (Scala files)
  • Note hold function per surface
Show 7 more
  • Mixer for oscillator volume balancing
  • Scale constraint for melodic playing
  • Garage Band export support
  • Real-time preview during patch editing
  • Polyphonic aftertouch support
  • Multiple FM oscillators
  • Bluetooth MIDI connectivity

VOSIS Pro

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

TC

No in-app purchases

None

VOSIS Pro

No in-app purchases

Questions

Is TC free?
TC costs $24.99, with no in-app purchases.
Is VOSIS Pro free?
VOSIS Pro costs $7.99, with no in-app purchases.
Which has better reviews, TC or VOSIS Pro?
TC is rated higher. TC averages 4.8 out of 5 from 68 ratings, while VOSIS Pro averages 4.6 from 7 ratings.
Do TC or VOSIS Pro have ads?
Neither TC nor VOSIS Pro shows ads.
Which is updated more often, TC or VOSIS Pro?
TC ships an update every 5 weeks, and VOSIS Pro every 3 months. Most recently, TC was updated on October 21, 2026 and VOSIS Pro on October 24, 2026.

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