OscDrax vs CosyHours
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OscDrax
Create unique sounds by drawing waveforms with your finger. This app allows you to combine four independent tracks for complex soundscapes, offering professional controls for detailed sound design.
- Draw custom waveforms
- 4-track multi-timbral synthesis
- High-resolution waveform editor
- Adjustable frequency range (20Hz-20kHz)
- Portamento effect
- Individual track volume control
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Your Fingertips Create New Sounds OscDrax is an innovative iOS waveform synthesizer that enables professional sound design through intuitive touch controls. Simply draw waveforms with your finger to instantly create original tones. Combine four independent tracks to build complex, rich soundscapes. Unleash Creativity with the Waveform Editor Our waveform drawing system maximizes the potential of touchscreen technology. With 512-point high resolution, accurately reproduce any waveform you imagine. Classic waveforms like sine, triangle, square, and sawtooth are also available at a single tap. Designed for everyone from beginners to professionals. 4-Track Multi-Timbral Synthesis Each track operates completely independently with its own waveform, frequency, and volume settings. Layer multiple tracks simultaneously to create thick, complex tones impossible with a single oscillator. Professional Controls Frequency Adjustment (20Hz-20kHz) Full coverage of human hearing range. Logarithmic scale slider provides musically natural control from bass to treble. Portamento Function (0-1000ms) Smooth glide effect between pitches. Faithfully reproduces the warm expression of analog synthesizers. Individual Volume Control Fine-tune each track's volume from 0-100%. Achieve ideal balance with precision mixing.
CosyHours
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Cosy Hours plays music that is being made as you listen. Nothing in it is a recording — no samples, no loops, no audio files anywhere in the app. Every note is synthesised on your device as it is played, so it will not repeat for as long as you leave it running. Put it on to work to, to study to, or to fall asleep to. THE SHELF Lofi records, each a different band rather than a different filter: a Rhodes on a balcony, brushes and vibraphone in the rain, nylon guitar over an upright bass, a koto, a choir. Chiptune sides for an arcade. And beds with no notes in them at all — ocean, forest wind, rain on glass, noise, a singing bowl, temple bells. Nothing loops, so nothing wears out. THE CHILL BAR One slider, AWAKE to ASLEEP. Tempo, swing, tone, reverb, density and even the lead instrument move together, and the tempo glides rather than jumps — so it sounds like the track settling rather than a track being changed. THE ROOM Behind the music is a hand-drawn pixel room: a woman on a sofa with a mug of coffee, a record turning, a tabby asleep at her feet, rain on the window and a city beyond it. She breathes, she blinks, her fingers tap, the coffee steams. Nothing is interpolated; every frame is a drawing somebody made. The room follows your clock from dawn to night, and the clock on the wall tells the actual time. THE POMODORO Focus and break lengths you choose, and a chime with no strike anywhere in it, so there is nothing to flinch at. The record can stop for your break and start again afterwards. The countdown sits on the Lock Screen and in the Dynamic Island, counted by the system's own clock, so it stays right even while the app is asleep. QUIET BY DEFAULT Everything runs on your device. No account, no subscription, no ads, no tracking and no network connection of any kind — there is nothing to collect, because nothing is ever sent. It keeps playing with the screen off, and it works with no signal at all.
Screenshots
Verdict
OscDrax and CosyHours are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
OscDrax costs $0.49 and CosyHours $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | OscDrax | CosyHours |
|---|---|---|
| Price | $0.49 — better | $0.99 |
| Rating | 4.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Daily | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 17.6 | 17.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 14 MB |
| Age rating | 4+ | 4+ |
| Developer | Junpei Wada | Junki Omura |
In-app purchases
OscDrax
No in-app purchases
CosyHours
No in-app purchases





