# Nerva: Sleep & Meditation — Relax, Focus, Calm Sounds > Science-informed breathing app for sleep, focus, and calm. (iPhone/iPad app by Saroar Khandoker.) - Source: https://appshunter.io/ios/app/nerva-sleep-and-meditation/id6773268130 (this page in markdown: same URL + `.md`) - Developer: [Saroar Khandoker](https://appshunter.io/developer/1398824559) - Category: Health & Fitness, Lifestyle - Price: Free with in-app purchases - Rating: 4.00/5 from 1 App Store ratings - Age rating: 12+ - Requires: iOS 17.0 · 25 MB - Languages: American English, French (France), German (Germany), Japanese, Brazilian Portuguese, Russian, European Spanish - Released: 2026-05-28 - Data updated: 2026-09-03 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/nerva-sleep-and-meditation/id6773268130/reviews.md ## What is Nerva? Feel calmer in five minutes. Guided breathing exercises for sleep, focus, and balance. Nerva is a calm, science-informed breathing app for iOS. A curated library of essential practices, each guided by a single breathing orb on a quiet canvas. Visual rhythm to follow, calm by default, with everything included from the first breath. Grounded in peer-reviewed research on breathwork — including cyclic sighing, the 4-7-8 protocol, and coherent breathing — Nerva turns studied techniques into something you can actually use: when you want to sleep, when you want to settle, when you want to focus, when you want to come back to yourself. — EIGHT TECHNIQUES — • Box Breathing (Sama Vritti) — Equal four-count rhythm. A steady practice many people reach for to regulate stress. • 4-7-8 Breathing — Extended exhale technique. Many people find it helpful for winding down before sleep. • Cyclic Sighing — Two short inhales, one long exhale. Studied for mood and stress. Many people find it calming within a few minutes. • Coherent Breathing — Six in, six out. A gentle rhythm studied for supporting heart-rate balance. • Nadi Shodhana — Alternate-nostril breathing. A traditional pranayama practice for settling the mind. • Bhastrika — Bellows breath. Many people feel more alert after a few cycles. • Kapalabhati — Sharp exhales many people use to clear mental fatigue. • 2-to-1 Breathing — Exhale twice as long as you inhale. Many find this rhythm supportive for relaxation. — THE DESIGN — A single orb on a calm canvas, expanding and contracting with your breath. Let your attention rest in one quiet place — visual rhythm to follow. Gentle chime cues you can turn on, and haptic taps at each phase boundary when you want them. Made for the moments you actually use it, not for scrolling. — PRIVACY-FIRST — Everything stays on your device. No account required. Your personal data stays on your phone. No advertising. Anonymous usage analytics only, used to improve the app — never shared with third parties, never linked to your identity. — SAFETY-AWARE — A short onboarding asks about pregnancy, heart conditions, seizures, asthma, and recent abdominal surgery. Intense techniques (Bhastrika, Kapalabhati, 4-7-8) stay tucked away if any apply, so your library shows what suits you. Your answers stay on this device. — REQUIREMENTS — • iOS 17 or later • iPhone and iPad Designed in Lisbon by byAlif — an indie studio building quiet, well-made apps. Not a medical device. Not medical advice. Consult a qualified clinician before using breathwork if you have a health condition. Privacy: https://nerva.byalif.app/privacy.html Terms: https://nerva.byalif.app/terms.html Come back to yourself, one breath at a time. ## Key features - Guided breathing exercises - Sleep and focus techniques - Visual rhythm guidance - Privacy-first design - Science-backed breathwork - Customizable for health conditions ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | A Gentle Breath | $2.99 | one-time | | A Moment of Stillness | $5.99 | one-time | | A Lasting Calm | $9.99 | one-time | ## Frequently asked questions about Nerva ### What breathing techniques does Nerva offer? Nerva offers eight techniques including Box Breathing, 4-7-8 Breathing, Cyclic Sighing, Coherent Breathing, Nadi Shodhana, Bhastrika, Kapalabhati, and 2-to-1 Breathing. These are grounded in peer-reviewed research for various benefits like stress regulation and sleep. ### Is Nerva suitable for users with health conditions? Yes, Nerva is safety-aware. It asks about conditions like pregnancy, heart issues, or asthma during onboarding. Intense techniques are then hidden if they don't suit your needs, ensuring a personalized and safe experience. ### Does Nerva require an account or collect personal data? No, Nerva is privacy-first and requires no account. All your personal data and usage analytics stay on your device and are never shared with third parties or linked to your identity. ### What devices is Nerva compatible with? Nerva is designed for iOS devices, specifically iPhones and iPads running iOS 17 or later. This ensures a consistent and optimized experience across Apple's mobile platforms. ### How often is Nerva updated? The app was last updated on August 3, 2026, indicating a commitment to ongoing development and improvements. Users can expect regular updates to enhance features and performance. ### What is the user rating for Nerva? Nerva has a rating of 4.0 stars based on 1 rating. This suggests a positive initial reception from its users. ### Can Nerva be used offline? The description emphasizes that everything stays on your device and no account is required, suggesting offline functionality. The app is designed for moments you actually use it, not for scrolling, implying it's accessible without constant internet. ### Is Nerva a medical device? Nerva is not a medical device and does not provide medical advice. It is a tool for relaxation and focus through breathwork. Users with health conditions should consult a qualified clinician before using breathwork techniques. ## Version history (last 5 releases) ### 1.4.0 — 2026-08-03 Nine sounds to listen to. Rain, ocean, forest, stream, fire, night, singing bowls, wind and noise. Press play, set the phone down, and let one run for up to ninety minutes. Controls on the lock screen. Start a sound, lock your phone, and pause or resume without unlocking it. A player that follows you. The mini-player now stays with you across every screen, so whatever is playing is always one tap away. Also in this update: a fix for a rare crash when moving between tabs mid-session, and the usual quiet polish. Nerva stays free, with every technique included. We read every email at nerva@qvisa.eu. ### 1.2.2 — 2026-07-07 A small update with a refreshed App Store listing and light polish under the hood. Nothing changes in your practice — the orb breathes exactly as before. Nerva stays free, with every technique included. We read every email at nerva@qvisa.eu. ### 1.2.1 — 2026-06-11 A quiet maintenance update. We refreshed Nerva's foundation to the latest framework so future updates arrive smoothly on new devices and iOS versions. Nothing changes in your practice — the orb breathes exactly as before. Nerva stays free, with every technique included. We read every email at nerva@qvisa.eu. ### 1.2 — 2026-06-03 What's new in this update: • Save your sessions to Apple Health as Mindful Minutes — optional, and off until you turn it on. • Set a gentle daily reminder for the time that suits you. • Choose your look: System, Light, or Dark. • Add a short note to reflect after a session. • Read the calm, science-informed thinking behind each practice. • A new way to support Nerva's development, if you'd like to. • Small refinements throughout. Nerva stays free, with every technique included. We read every email at nerva@qvisa.eu. ### 1.0 — 2026-05-28 No release notes. ## More apps by Saroar Khandoker - [AddaMe](https://appshunter.io/ios/app/addame/id1398824560) - [Walk,Nearby,Neighbours,Friends](https://appshunter.io/ios/app/walknearbyneighboursfriends/id1538487173) - [Learn Portuguese: Vozla](https://appshunter.io/ios/app/learn-portuguese-vozla/id1619504857) - [eCardify Digital Business Card](https://appshunter.io/ios/app/ecardify-digital-business-card/id6452084315) - [iIntrvwBell](https://appshunter.io/ios/app/iintrvwbell/id6457363081) - [SubTracker: Subscriptions](https://appshunter.io/ios/app/subtracker-subscriptions/id6759149326) All apps by Saroar Khandoker: https://appshunter.io/developer/1398824559 ## Related topics [nerva](https://appshunter.io/ios/topics/nerva) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-03.*