Sonaur vs Sun Based Time
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sonaur
This app transforms real-time data, like weather or biometrics, into evolving ambient music. It offers unique, artist-composed soundscapes that adapt to your environment and personal rhythms, perfect for focus, relaxation, or sleep. Enjoy an uninterrupted, personalized listening experience.
- Real-time weather-driven music
- Artist-composed sonic palettes
- Biometric sound shaping (Apple Watch)
- Binaural beats for focus/sleep
- Sleep timer
- Lock screen playback
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Let the world become your soundtrack. Most focus music repeats. Your brain notices. Sonaur responds — transforming real-time data into evolving ambient music composed and recorded by musicians, not AI. No repetitive loops. Just responsive soundscapes designed for immersive, extended listening. WEATHER MODE (FREE) Temperature, wind, clouds, light, and rain shape how and when sounds unfold. A foggy morning feels different than a bright afternoon. The same city never sounds the same twice. • Real-time weather shapes the music • Curated, artist-composed sonic palettes • Optional binaural beats for sleep, focus, meditation, or mental clarity • Sleep timer • Lock screen playback controls • No ads. No interruptions HEALTH MODE (Apple Watch Required) — $19.99 One-Time Unlock Let your body's rhythms shape the sound. With Apple Watch, your heart rate, HRV, activity, and movement shape the music in real time. Calm moments create space. Increased activity builds layers. Adaptive binaural beats gently shift within your selected range based on your biometrics. • Real-time biometric sound shaping • Apple Watch companion app • Health data processed locally — nothing stored or transmitted • Works in Airplane Mode • One-time purchase. No subscription PERFECT FOR Focused work, concentration, and writing. Meditation and mindfulness. Creative flow sessions. Relaxation, evening wind-down, or sleep. Anyone who appreciates ambient music and wants a soundtrack that feels unique, personal, and alive. Inspired by a quote from Brian Eno: "You know, a wind chime is basically a simple piece of generative music." Press play. Your personal ambient soundtrack — created by the world.
Sun Based Time
This app uses the sun's position to help you schedule your day and set alarms. It offers features like countdowns to sunrise and sunset, and alarms based on solar events or desired sleep duration. Visualize the sun's path and integrate with your calendar for a natural approach to time management.
- Sun-based clock
- Countdown to sunrise/sunset
- Visualize sun's path
- Alarms by sun position
- Wake by sleep duration
- Sleep window by sunset/sunrise
- Calendar integration
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A clock and alarm app based on the sun, using the position of the sun where you are, with sleep scheduling in relation to sunrise and sunset. Sun Based Time gives you a grounded way to align with natural light. FEATURES ◆ Sun Based Clock - Countdown to Sunrise & Sunset Always know how long until sunrise or sunset. ◆ Visualize the Sun's Path Easily get a feel for which part of the day you are in. ◆ Set Alarms by the Sun Schedule alarms relative to sunrise, sunset, or solar noon. ◆ Wake Alarm by Sleep Duration Choose how long you want to sleep and dynamically wake after that long. ◆ Sleep Window by Sunset or Sunrise Set your sleep window in relation to sunset or sunrise. ◆ Custom Alarm Tones Choose from a curated set of calming default tones, or pick your own. Wake the way you want to wake. ◆ Calendar View A calendar grounded in the cyclical energies that shape the earth. With calendar integrations like Google Calendar. ◆ Privacy-Respecting Your data stays on your phone. Solar position based time is in tune with the rhythms you experience. Sun Based Time gives you a reference so you can increase your awareness of the relationships between cycles. ~~~~~~~~~~~~~~~~ From sunset, sunrise.
Screenshots
Verdict
The clearest difference is in-app purchases: Sun Based Time at none against Sonaur's 1. Sun Based Time also leads on iOS requirement (15.1 vs 17.0). Sonaur's advantage is ratings volume (10 vs 1). On price, rating, 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
Both are free to download. Sonaur sells 1 one-off in-app purchase. Sun Based Time asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for Sonaur against 5.0 for Sun Based Time. That said, the two scores are not equally well evidenced: Sonaur has 10 ratings behind it against 1, so its average is the more settled of the two.
| Parameter | Sonaur | Sun Based Time |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (10 ratings) | 5.0 (1 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 10 — better | 1 |
| Update frequency | Every 9 days | — |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Requires iOS | 17.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 61 MB | 57 MB |
| Age rating | 4+ | 4+ |
| Developer | Scott Kiekbusch | JAVED SHAH |
Customer experience
Sonaur
Sun Based Time
In-app purchases
Sonaur
- Sonaur Health Mode$19.99
Sun Based Time
No in-app purchases









