PhyOSC vs DreamKnock
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PhyOSC
This app uses Apple Watch data to control sound based on your body movements. It converts sensor data and arm movements into OSC messages for DAWs, allowing for dynamic soundscapes during exercise. Customize filters and settings for varied audio expressions.
- Receives Core Motion data from Apple Watch
- Converts sensor data to OSC messages
- Supports 12 types of arm movements
- Applies digital filters to data
- Saves and recalls filtered settings
- Switches DAW devices via settings
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PhyOSC is an application that supports your exercise with Apple Watch, controlling the sound according to your body movement. Instead of uniform music at the sports gym, The instructor's improvisational movement enhances the atmosphere of the venue during the session. ------------------------- Features of PhyOSC ------------------------- 1) PhyOSC receives Core Motion data from Apple Watch on iPhone. The iPhone converts this sensor data and 12 types of arm movements trained by machine learning into OSC messages and sends them to the IP address and Port number to which the DAW is connected. 2) PhyOSC can apply a digital filter when converting Apple Watch Core Motion data received by iPhone into OSC message data. 3) OSC can name and save the filtered settings. This setting can be instantly recalled and switched, so even with the same arm movement, setting A produces a cheering sound effect, and switching to setting B produces a drum kick sound. It realizes a variety of expressions such as changing the waveform of the oscillator and the oscillator. In addition, the TCP / IP address and Port number of the OSC message destination are set in the settings, so you can switch DAW devices by switching the settings. ------------------------- System Requirements ------------------------- PhyOSC requires iPhone and Apple Watch. The required operating environment is as follows: Apple Watch : watchOS 8 Apple Watch Series 5 or higher recommended iPhone: iOS 15 iPhone 8 or higher recommended ------------------------- Limitations ------------------------- The accuracy of machine learning recognition is not 100%. Incorrect results may be output depending on the speed and angle of arm movement. We continue to research the latest research and look for new approaches to improve accuracy.
DreamKnock
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Wake up inside your dreams. DreamKnock turns your Apple Watch into a lucid-dreaming trainer. While you sleep, the DreamSense™ engine reads your heart-rate dynamics and wrist stillness to sense when you're dreaming — then plays a gentle, distinctive haptic rhythm, soft enough not to wake you. Trained by day, that rhythm means exactly one thing inside a dream: this is a dream. HOW IT WORKS • Tap Start Sleep, set your intention, and drift off • DreamSense™ fuses heart-rate dynamics, micro-motion atonia sensing and sleep-architecture modeling — self-calibrating to your body every single night • When REM holds, a quiet cue slips into your dream BUILT TO PROTECT YOUR SLEEP • Adaptive backoff: if a cue wakes you, the next one waits twice as long; three awakenings stop cues for the night • Cues wait for the REM-rich second half of the night • A battery guard ends the session gracefully and saves your report THE COMPLETE METHOD • Wake Back to Bed (WBTB) timed gentle wake • MILD intention screen at bedtime • Daytime rhythm training and reality-check reminders • Morning report: REM timeline, cue moments, heart-rate curve, sleep latency • Dream journal with dictation, lucid wins and dream-sign tags • Trends: lucid rate, REM per night, your top dream signs • Three cue rhythms, three strengths PRIVATE BY DESIGN No account. No cloud. No analytics. Heart-rate data is processed on your watch via HealthKit and never leaves the device. Your Apple Watch runs the whole night on its own — your iPhone can charge in another room. Requires iPhone (iOS 17) and Apple Watch (watchOS 10) or later. DreamKnock is a wellness tool, not a medical device. Sleep inferences are estimates and vary by person. What's New: Welcome to DreamKnock 1.0 — sweet dreams, and see you on the other side of the mirror. Privacy Policy: https://dreamknock.com/privacy Terms of Use (EULA): https://dreamknock.com/terms
Screenshots
Verdict
The clearest difference is update cadence: DreamKnock at daily against PhyOSC's every 7 months. On price, 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
Both are free to download. PhyOSC sells 1 one-off in-app purchase and DreamKnock sells 1 in-app purchase, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.
PhyOSC ships an update every 7 months, DreamKnock daily. The most recent releases landed on September 7, 2026 and September 14, 2026 respectively.
| Parameter | PhyOSC | DreamKnock |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (2 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 7 months | Daily — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free | — |
| Devices | iPhone, Apple Watch | iPhone, Apple Watch |
| Requires iOS | 16.6 — better | 17.0 |
| Further details — not scored | ||
| Size | 9 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Masaru Suzuki | 俊杰 沈 |
In-app purchases
PhyOSC
- Unlimited$0.99
DreamKnock
- DreamKnock Pro (Monthly)7 Days trial$2.991 Month









