CozySynth vs Contour
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CozySynth
Create and discover ambient synth music with customizable visuals. Add your own videos, compose unique sounds, and share your creations or custom channels with friends. Enjoy an ad-free, login-free experience focused on quiet music.
- Discover ambient synth channels
- Add custom video to channels
- Compose music in Studio mode
- Design synth voices and drum sequences
- Export looping video clips
- Share custom channels with friends
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Discover quiet channels of cozy synth moods. Swipe through stations, add your own video, shape the sound, and share the vibe. Swipe & discover Flip through channels — each one a different mood. Procedural visuals breathe gently, shifting quietly as you explore. Make it yours Add your own video or photo to bring a channel to life. Play with presets or go deeper in Studio mode — compose progressions, build basslines, design synth voices, sequence drums, and layer global effects. Every vibe becomes truly yours. Share the moment Export looping vertical clips for TikTok, Reels, or Shorts. Or send a .cozy file privately to a friend — they tap, and it installs as a new channel, ready to listen to and remix. No ads. No login. Just you, your channels, and the quiet music you make or find. Fonts & Attributions CozySynth uses Cooper* Extra Bold by The Cooper* Project Authors (Indestructible Type). © The Cooper* Project Authors. Licensed under the SIL Open Font License, Version 1.1. This license and full details (including copyright notices) are available at: https://openfontlicense.org Font source: https://indestructibletype.com/Cooper or https://github.com/indestructible-type/Cooper
Contour
This app is a unique musical instrument played by touch. It uses a visual interface where your finger's position determines the sound, offering a novel way to create drones, textures, and pads. It also functions as an AUv3 plugin for use in other music production apps.
- Touch-based sound generation
- Perceptual distance mapping
- Eleven distinct sound sheets
- MIDI input and ribbon controller
- AUv3 plugin support
- Recording functionality (Pro)
- Customizable sound sheets (Pro)
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Contour is an instrument you play by walking. Four neural decoders sit at the corners of a square. Your finger somewhere in the middle is a blend of all four, and the square is drawn as a survey sheet. The contour lines are not decoration. They come from what those four decoders actually produce, laid out so that equal distances on screen are equal perceptual distances in sound. Cross a line and the sound has changed by a measured amount. THE SHEETS Eleven of them, each a different set of four corners, each chosen by measuring the whole library rather than by ear. They are grouped by what the measurement found: BRIGHT — HEHUAN, the brightest, where all four corners hold their own. CONTRAST — BEIYIDUAN, the widest corner spread at 8.2 times. BREATH — NENGGAO, the breathiest. DEPTH — MABO, the deepest at 53 dB. RANGE — YUSHAN, the widest at 66 semitones; JIAMING, the most focused at 17. They are named after Taiwan's high mountain traverses. PLAYING IT Touch the sheet to sound it. The ribbon underneath sets pitch, or send MIDI and play it from a keyboard. Press harder and the note opens up — the contact patch of your finger is the dynamic. Hold on empty ground to drop a mark you can come back to. The readout above the ribbon tells you where you are while you are there: brightness, noise, the grid reference, the frequency. IN A HOST Contour is also an AUv3 plug-in. It runs in AUM, GarageBand, Cubasis, Logic for iPad and anything else that hosts Audio Units, with the position automatable as two parameters and the sheet recallable with your session. The plug-in draws the same map the app does, laid out for the window a host gives it. WHAT IS FREE Three sheets — BEIYIDUAN, NENGGAO and YUSHAN — with the whole instrument: the map, the ribbon, MIDI, reverb, marks, and the plug-in. No time limit and no account. CONTOUR PRO A single purchase, once, unlocks: • All eleven sheets • Recording, straight to a file • The envelope panel — attack, decay, sustain, release • Composing sheets of your own from the library, 4,845 combinations of four corners, with the map baked for the pitches they share Requires iOS 16 or later. iPhone and iPad.
Screenshots
Verdict
The clearest difference is rating: CozySynth at 5.0 against Contour's 4.0. CozySynth also leads on monetization model (free vs freemium). Contour's advantage is device support. On price, ratings volume, in-app purchases and iOS requirement 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
Both are free to download. CozySynth sells 1 one-off in-app purchase and Contour sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
CozySynth holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 2 and 2 respectively.
| Parameter | CozySynth | Contour |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | 4.0 (2 ratings) |
| Positive reviews | — | 0.0% of reviews |
| Number of ratings | 2 | 2 |
| Update frequency | — | Weekly |
| Ads | — | No |
| In-app purchases | Yes | Yes |
| Monetization | Free — better | Freemium |
| Devices | — | iPhone, iPad — better |
| Requires iOS | 15.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 90 MB | 108 MB |
| Age rating | 4+ | 4+ |
| Developer | Ben Morrison | Chih Han Lin |
In-app purchases
CozySynth
- CozySynth Studio$3.99
Contour
- Contour Pro$3.99









