GyrOSC vs Kvart
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GyrOSC
This utility sends your device's motion sensor data to OSC-compatible applications over Wi-Fi. Wirelessly control audio or video software by moving and tilting your device, with customizable message tags and quick setup options.
- Send gyroscope, accelerometer, and compass data
- Transmit GPS, quaternion, and rotation data
- Control OSC-capable audio/video apps
- Customize message tags
- Save and load OSC addresses
- Screen lock for performance
- Gyroscope orientation reset
Read full descriptionHide full description
GyrOSC is a lightweight utility that sends your device's motion sensors to any OSC (Open Sound Control) capable application over Wi-Fi. Wirelessly control your OSC capable audio or video app by moving and tilting your iPhone, iPod Touch, or iPad. Wirelessly send: • Gyroscope {pitch, roll, yaw} • Accelerometer {x-axis, y-axis, z-axis} • Compass {magnetic heading} • GPS {latitude, longitude, altitude, course, speed, time} • Quaternion {w, x, y, z} • Rotation matrix {m1 ... m16} • Rotation rate {x-axis, y-axis, z-axis} • Gravity {x-axis, y-axis, z-axis} • Magnetic field {x-axis, y-axis, z-axis} • Altitude {m, kPa} Control any live audio or video application that supports OSC messaging. Some examples include Max/MSP, Pure Data, Processing, Plogue Bidule, Isadora, and more. Features: - Customize message tags - Save and load addresses for quick setup - Screen lock for performance - Gyroscope orientation reset button - Control buttons to send OSC messages GyrOSC will automatically detect the available sensors in your device.
Kvart
Read full descriptionHide full description
A visual timer that respects your flow. No forced Pomodoro breaks. No mandatory task lists. No productivity guilt trips. Just a beautiful, reliable countdown timer that helps you get things done. SEE TIME PASS Large visual countdown with a satisfying progress ring. Glance from across the room while cleaning, cooking, or working. Always know exactly how much time remains - even if the phone is on the counter. YOUR TIMER, YOUR RULES Work in 15-minute bursts, clean for 7 minutes or do a longer session. Skip breaks when you're in flow, or take them when you need. You're in control. ACTUALLY WORKS Keeps screen awake so you can see your timer while working. Sends reliable notifications even when backgrounded. No mysterious timer failures or silent completions. ZERO FRICTION One tap to start timing. No account required. No setup checklists. No forced tutorials. Just open the app and start. CUSTOMIZABLE ALERTS Choose from gentle chimes to attention-grabbing bells. Enable vibration for silent spaces. Or go completely silent if you prefer pure visual feedback. PERFECT FOR: Cleaning bursts (10-15 minutes to stay motivated) Focus sessions (custom durations that match your energy) Cooking and meal prep (visible timer from across kitchen) Exercise intervals (HIIT, stretching, workout sets) ADHD time management (visual feedback reduces time blindness) Quick tasks (5-minute sprints to overcome procrastination) OPEN SOURCE & PRIVACY-FIRST No ads, ever No tracking or analytics Works 100% offline All data stays on your device Open source code available on GitHub FEATURES: - Large visual countdown display - Customizable timer durations - Quick preset buttons - Screen stays awake during timer - Landscape orientation support - Background operation with notifications - Multiple sound options - Vibration alerts - Dark mode - Premium themes - Clean, minimal interface NO FEATURE BLOAT App deliberately does't include task management, productivity tracking, social features, or forced methodology. Kvart does one thing exceptionally well: countdown time visually. FREE FOREVER WITH OPTIONAL PREMIUM All timer functionality is completely free forever. One-time in-app purchases only unlock visual customization. Description has been AI generated and human-reviewed.
Screenshots
Verdict
The clearest difference is price: Kvart at Free against GyrOSC's $0.99. Kvart also leads on update cadence (every 3 months vs every 7 months). GyrOSC's advantage is in-app purchases (none vs 2) and iOS requirement (14.0 vs 18.0). On ads 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
Kvart is free to download; GyrOSC costs $0.99 up front. Kvart sells 2 one-off in-app purchases. GyrOSC asks for nothing beyond the download.
GyrOSC ships an update every 7 months, Kvart every 3 months. The most recent releases landed on September 14, 2026 and September 7, 2026 respectively.
| Parameter | GyrOSC | Kvart |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 5.0 (5 ratings) — better | — |
| Positive reviews | 71.4% of reviews | — |
| Number of ratings | 5 — better | — |
| Update frequency | Every 7 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 14.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 3 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Bit Shape | Valeriia Viana Gusmao |
In-app purchases
GyrOSC
No in-app purchases
Kvart
- Vintage Amber Theme$0.49
- Blaze Theme$0.49









