# NoBand: Recovery & Readiness — HRV, strain & sleep tracker

> HRV, strain & sleep tracker (iPhone/iPad app by Konrad Sierzputowski.)

- Source: https://appshunter.io/ios/app/noband-recovery-and-readiness/id6786774314 (this page in markdown: same URL + `.md`)
- Developer: [Konrad Sierzputowski](https://appshunter.io/developer/1871588728)
- Category: Health & Fitness, Lifestyle
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 18.0 · 10 MB
- Languages: American English, Dutch, French (France), German (Germany), Italian, Japanese, Korean, Polish, Brazilian Portuguese, Russian and 3 more
- Released: 2026-08-14
- Data updated: 2026-08-16
- User reviews in markdown: https://appshunter.io/ios/app/noband-recovery-and-readiness/id6786774314/reviews.md

## What is NoBand?

Your Apple Watch already collects everything needed to understand your body. NoBand turns that data into clear daily scores — Recovery, Readiness, Strain, and Sleep — with no extra wearable, no band, and no subscription. Pay once, yours forever.

RECOVERY (0–100)
Every morning NoBand compares last night's heart-rate variability, resting heart rate, breathing rate, and wrist temperature against your own 30-day baselines. You get one honest number, a calm Primed / Ready / Take it easy band, and the biggest factor that moved it — explained in plain English, never jargon.

READINESS (0–100)
Recovery asks how well your body rebounded overnight. Readiness asks the bigger question: all things considered — last night AND your two-week sleep balance, HRV trend, and training load — should you push today? Two rings, one honest answer, so “2 hours of sleep but great HRV” never reads as a green light.

STRAIN (0–21)
Your day's cardiovascular load, built from time in your personal heart-rate zones. The Strain Coach shows a live target range matched to today's recovery, so you know when to push and when to back off.

SLEEP
Hours versus your learned sleep need, sleep debt, stages, and a 0–100 consistency score. The Sleep Coach recommends tonight's bedtime for the morning you want.

BUILT ON REAL SPORT SCIENCE
No black box. Every score comes from published, peer-reviewed methods — and the app shows you the math:
• Recovery compares each morning against your own rolling 30-day baselines using robust statistics, so one weird night never skews your normal.
• Readiness weighs sleep debt using Borbély’s two-process sleep model and smooths trend inputs over 14 days, so it shifts calmly instead of overreacting.
• Strain uses the Banister TRIMP model — the training-load method used in sports science for decades — built from time in your personal heart-rate zones.
• Training load balance tracks your acute-to-chronic workload ratio, the same signal pro teams use to flag overtraining risk.
• Sleep consistency uses the Sleep Regularity Index — the only regularity metric validated against all-cause mortality (UK Biobank, 2024) — and your sleep need is learned from your own history, not a one-size-fits-all eight hours.
Tap any score to see exactly which input moved it and by how much — the full methods, weights, and sources are inside the app.

ALSO INCLUDED
• Health Monitor — five vitals tracked against your personal ranges
• Stress Monitor with a guided one-minute breathing exercise
• Daily Journal — see which habits actually move your recovery
• Weekly and monthly reports with warm, honest takeaways
• Trends — 7 / 30 / 90-day charts for every score
• Fitness Age with the top levers to improve it
• AI Coach — ask questions about your own numbers, included free
• Apple Watch app with complications and a morning recovery glance
• Silent alarm timed to your lightest sleep phase
• Optional, private cycle insights

PRIVATE BY DESIGN
Your health data is processed on your iPhone. No ads, no tracking, never sold. NoBand reads Apple Health with your permission and works with the watch you already own.

ONE-TIME PURCHASE
Your first week is free, then a single one-time unlock. No subscription, ever.

NoBand is a wellness product, not a medical device. Requires an Apple Watch (or another device that writes heart data to Apple Health).

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| NoBand Lifetime Unlock | $9.99 | one-time |



## Version history (last 1 release)

### 1.1.1 — 2026-08-14

No release notes.

## More apps by Konrad Sierzputowski

- [Boppy: AI Music Generator](https://appshunter.io/ios/app/boppy-ai-music-generator/id6778658290)

All apps by Konrad Sierzputowski: https://appshunter.io/developer/1871588728

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*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 2026-08-16.*