Comparison

Zero vs Root

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Zero

This app helps you manage stress by combining guided breathing exercises with real-time biometric data from your Apple Watch. It provides insights into your stress patterns and helps you schedule recovery moments to build resilience.

Highlights
  • Guided breathing exercises
  • Real-time biometric tracking (RHR, HRV)
  • Stress pattern analysis
  • Scheduled mindful breaks
  • Relaxation validation
  • Local data storage
Features
Read full description

Zero Rush — Your Relaxation Tracker Zero Rush helps you slow down, reset, and understand your stress. Combining guided breathing, real-time biometrics, and relaxation tracking, it gives you measurable insights into how your body responds to stress — so you can take control, not just calm down. Relaxation Tracker Discover what really helps you relax — massage, meditation, music, or silence. Track how your heart rate changes before and after each session to validate what actually works for you. Track Your Stress & Understand Your Patterns With Apple Watch, Zero Rush calculates your stress level using your latest Resting Heart Rate (RHR) and Heart Rate Variability (HRV). See when your stress increases, identify your triggers, and understand your patterns by time of day and day of the week. Breathe Better Use scientifically backed breathing methods like 4-7-8 or Box Breathing to reduce tension and improve focus. Customize your own breathing method and create the perfect rhythm for your daily breaks. Scheduled Breaks Plan your daily recovery moments. Set up smart reminders to take mindful breaks throughout the day, and reconnect with yourself for just a few minutes at a time. Privacy by Design Your data never leaves your device. Everything is stored locally and visible only to you. Zero Rush is not a medical device and does not provide diagnosis or treatment. It is intended for wellness and educational purposes only. Compatible with: iPhone & Apple Watch. Apple Watch unlocks live HRV, resting heart rate, and real-time stress tracking — Zero Rush also works without one. Stop guessing what calms you. Start knowing. Terms of Use: https://www.zero-rush.com/terms-of-use/ Privacy Policy: https://www.zero-rush.com/privacy-policy/ EULA: https://www.zero-rush.com/eula/

About

Root

Features
Read full description

Traditional sleep apps give you arbitrary scores that often create more anxiety than clarity. Root takes a different path. Built by Slow Bloom Studio, Root is a gentle, non-judgmental dashboard for your Apple Watch health data. We believe in tracking your body's personal baselines, not comparing you to a global average. Root translates complex health metrics into quiet, actionable insights so you can anchor in rest and grow at your own pace. Key Features: - Personal Baselines: Understand your HRV, resting heart rate, and wrist temperature offset against your own 30-day average. See exactly when your body is balanced, elevated, or recharging. - Context Tags: Sleep doesn't happen in a vacuum. Log daily habits (like late screen time, yoga, or a heavy meal) and use the Patterns lens to see how they actually correlate with your night's recovery. - Trends: View 14-day and 30-day moving averages that reveal your body's true seasonal shifts. - Morning Readiness: Wake up to a simple, beautifully designed "Organic Light" dashboard that visually translates your body's echoes into a serene morning greeting. Privacy First All computation is strictly on-device. Root reads your Apple Health data to generate insights, but your data never leaves your iPhone. Deep roots for a slow bloom.

Screenshots

Zero4 screens
Root4 screens

Verdict

The call

The clearest difference is in-app purchases: Root at none against Zero's 3. Root also leads on update cadence (weekly vs every 3 weeks). On price, ads, device support and iOS requirement 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Zero sells 3 in-app purchases, starting at $1.99 per month. Root asks for nothing beyond the download.

UpkeepUpdate frequency

Zero ships an update every 3 weeks, Root weekly. The most recent releases landed on October 16, 2026 and October 7, 2026 respectively.

Scorecard2 real differences · 7 level
Zero versus Root: the parameters behind the verdict, then further details
ParameterZeroRoot
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 3 weeksWeekly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhone, Apple WatchiPhone, iPad
Requires iOS18.517.6 — better
Further details — not scored
Size10 MB8 MB
Age rating4+4+
DeveloperCarlos Adiel Vega LopezChen Hao

In-app purchases

3 purchases

Zero

Subscriptions2
  • All Access – Monthly14 Days trial$1.991 Month
  • All Access – Yearly14 Days trial$19.991 Year
One-time1
  • Lifetime All Access$89.99
None

Root

No in-app purchases

Questions

Is Zero free?
Zero is free to download, with in-app purchases available.
Is Root free?
Root is free to download, with no in-app purchases.
Do Zero or Root have ads?
Neither Zero nor Root shows ads.
Which is updated more often, Zero or Root?
Zero ships an update every 3 weeks, and Root weekly. Most recently, Zero was updated on October 16, 2026 and Root on October 7, 2026.

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