Night Hark vs Longevity Arc
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Night Hark
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Ever wondered about the sounds accompanying your sleep? Night Hark is your private, offline sleep sound tracker and ambient noise analyzer. Discover night noise, record sleep audio, and gain deep insights into your sleep environment. LISTEN & EXPLORE Night Hark records and analyzes nighttime ambient sounds while you sleep. Listen back to your nocturnal soundscape โ from soothing ambient sounds to unexpected noises and snoring. ADVANCED SLEEP SOUND ANALYTICS โข Second-by-Second Analytics: Track volume level changes and decibel variations throughout the night. โข 500+ Sound Categories: Identify sleep noise patterns including ambient hums, rustling, snore sounds, and environment changes. โข Detailed Sleep Visualizations: View intuitive audio charts to pinpoint noise disturbances. 100% OFFLINE & PRIVATE Your privacy comes first. Night Hark works completely offline and processes all audio data locally on your device. Zero internet transmission means your private sleep recordings never leave your phone. WHY CHOOSE NIGHT HARK? โข Improve Sleep Quality: Identify environmental noise triggers interrupting your rest. โข Snore & Noise Monitor: Track nighttime disturbances with precision. โข Privacy-Focused: No cloud uploads, no account required. Download Night Hark today and discover the soundscape of your sleep!
Longevity Arc
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Longevity Arc turns your Apple Health data into five clear longevity signals. Instead of digging through scattered charts, you can see HRV, fitness, sleep, gait, and cardiac load together in one simple dashboard designed to help you understand how your body is trending over time. Built for people who care about healthspan, recovery, and long-term performance, Longevity Arc helps you spot changes faster and focus on the metrics that matter most. The app is designed to feel simple at a glance while still giving you useful depth when you want to explore trends and patterns. What you can do in Longevity Arc: - Track five science-inspired longevity signals from Apple Health in one place. - Review your HRV, sleep, fitness, gait, and cardiac-load trends without jumping between different screens. - Get a clearer picture of how daily habits may affect your long-term trajectory. - Use a private, HealthKit-powered experience built around your own data. Why people use Longevity Arc: - Apple Health already contains valuable signals, but they are often fragmented and hard to interpret quickly. - Longevity Arc brings those signals together into a more readable view so you can check your status in seconds. - The focus is not noise or endless scores - it is a cleaner way to monitor meaningful change over time. Privacy and data: - Longevity Arc works with your Apple Health data. - You stay focused on your own signals, trends, and progress. Ideal for: - Biohackers tracking recovery and resilience. - Health-conscious users who want a simpler Apple Health dashboard. - Founders, athletes, and everyday users trying to balance stress, fitness, and sleep over time. Privacy Policy: https://longevityarc.app/privacy Terms of Use: https://longevityarc.app/terms
Screenshots
Verdict
The clearest difference is in-app purchases: Night Hark at none against Longevity Arc's 2. Longevity Arc's advantage is update cadence (every 3 days vs monthly). On price, ads, device support and iOS requirement there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Longevity Arc sells 2 in-app purchases, starting at $2.99 per month. Night Hark asks for nothing beyond the download.
Night Hark ships an update monthly, Longevity Arc every 3 days. The most recent releases landed on October 16, 2026 and October 7, 2026 respectively.
| Parameter | Night Hark | Longevity Arc |
|---|---|---|
| Price | Free | Free |
| Update frequency | Monthly | Every 3 days โ better |
| Ads | No | No |
| In-app purchases | No โ better | Yes |
| Devices | iPhone, iPad, iPod | iPhone, iPod, Apple Watch |
| Requires iOS | 15.0 โ better | 15.1 |
| Further details โ not scored | ||
| Size | 89 MB | 40 MB |
| Age rating | 4+ | 4+ |
| Developer | Bernhard Piskernik | Radoslaw Jozefowicz |
In-app purchases
Night Hark
No in-app purchases
Longevity Arc
- Monthly Pro3 Days trial$2.991 Month
- Lifetime Pro$9.99









