TC vs Cotracks
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 185 built-in presets
- Unlimited user patches
- Multi-touch and device motion control
- 23 modular synthesis objects
- Built-in recording and AudioCopy
- Audiobus support
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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
Cotracks
Create music collaboratively on a single iPad with a multitrack sequencer. Record and play back your own parts in sync with others, building complex tracks with various instruments and effects. Designed to maintain creative flow for solo or group sessions.
- Multitrack sequencer with up to 12 instrument tracks
- Beat synchronized playback and recording
- Dedicated interface modes for 1, 2, or 4 users
- Polyphonic and monophonic synthesizers with quality presets
- Sample player with professional library
- Stereo delay, phaser, and equalizer effects
- Audiobus support and audio export options
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"Cotracks is a brilliant concept and, on the whole, has been beautifully realised by Futucraft." - MusicAppBlog.com "Cotracks is a great platform for creation that has hit upon a clever collaborative setup." - Apps Magazine "A new approach to collaboration" - PalmSounds.net Cotracks is a collaborative music studio for teamwork on a single iPad. With Cotracks you can create multiple layers of loops and phrases using multiple instruments. Cotracks is designed to maintain your creative flow and is always ready to capture your ideas, regardless whether you are flying solo or collaborating with others. It's like playing with a band, but this time you can record and play back your own parts, in perfect sync with others, and create the constituents for a great track at the same time. With Cotracks the whole is greater than the sum of its parts. FEATURES MULTITRACK SEQUENCER • up to 12 instrument tracks • beat synchronized playback and recording INTERFACE • comfortable access for multiple users • dedicated interface modes for single user, two users and four users • switch between interface modes with a single tap • independent playback control constantly available for each instrument • repeater lets you play and record complex beat synced rhythmic textures • XY-modulation control EDITING • nondestructive quantize, transpose and swing • change the playback scale of recorded sequences • drag and drop copying of sequences between instruments INSTRUMENTS • polyphonic synthesizer with dozens of high quality instrument presets • monophonic bass/lead synthesizer with dozens of high quality instrument presets • sample player with a library of professional quality samples from Inspire Audio • programmable XY-modulation • band-limited oscillators to ensure professional grade sound quality FX • stereo delay • stereo phaser • 2 equalizer units • dedicated units for each track SHARING • Audiobus support • export each instrument to separate audio clip • export all in one audio mixdown clip SUPPORT • on-screen help and tips • online support integrated in app • video tutorials
Screenshots
Verdict
The clearest difference is update cadence: TC at every 5 weeks against Cotracks's every 6 months. TC also leads on price ($24.99 vs $29.99) and ratings volume (68 vs 3). Cotracks's advantage is iOS requirement (12.0 vs 16.0). On rating, review sentiment, ads and in-app purchases 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
TC costs $24.99 and Cotracks $29.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 4.8 for TC against 4.7 for Cotracks. That said, the two scores are not equally well evidenced: TC has 68 ratings behind it against 3, so its average is the more settled of the two. Written reviews are what separate them: 88% of TC's written reviews are positive against 86% of Cotracks's.
TC ships an update every 5 weeks, Cotracks every 6 months. The most recent releases landed on October 7, 2026 and June 5, 2026 respectively.
| Parameter | TC | Cotracks |
|---|---|---|
| Price | $24.99 — better | $29.99 |
| Rating | 4.8 (68 ratings) — better | 4.7 (3 ratings) |
| Positive reviews | 87.8% of reviews — better | 85.7% of reviews |
| Number of ratings | 68 — better | 3 |
| Update frequency | Every 5 weeks — better | Every 6 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad — better | iPad |
| Requires iOS | 16.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 53 MB | 45 MB |
| Age rating | 4+ | 4+ |
| Developer | Bit Shape | Futucraft Oy |
Customer experience
TC
Cotracks
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
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- 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
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- 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
Cotracks
Not enough reviews yet to summarise bugs or requests.
In-app purchases
TC
No in-app purchases
Cotracks
No in-app purchases









