Comparison

Mayo vs ParamWatch

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

Head to head
About

Mayo

Features
Read full description

Mayo is your personal discipline companion. He learns from your day, body, sleep, and routines, then turns them into playful nudges that regulate your nervous system and make discipline feel natural. WHAT MAYO DOES • Reads your real signals: recovery, sleep, heart rate patterns, and how you show up • Uses your calendar to prepare you before important moments and help you recover after dense stretches • Offers one clear next move at a time: a short breath, a walk, a reset, or quiet support • Celebrates progress without pressure, guilt, or overwhelm ON IPHONE Today is Mayo. One living companion. One short message. One useful action. Mayo stays with you through the day, learns your patterns, and keeps guidance simple, warm, and specific to you. ON APPLE WATCH Mayo lives on your wrist. No dense dashboards. Just Mayo, one line of context, one metric or countdown when it matters, and one primary action. Start a reset before a Key Moment, settle after training, or stay quiet when you do not need anything. BUILT AROUND YOUR NERVOUS SYSTEM • Regulation Score and body signals that stay readable • Practices you can finish in minutes • Personal insights that grow as Mayo learns what actually helps you START FREE Mayo does not shout. He does not pile on tasks. He plays your day with you, one calm, useful move at a time. Subscription & Pricing Mayo offers a 7-day free trial to experience the app. Monthly: $6.99 USD Yearly: $69.99 USD (save ~17% vs. monthly) Prices may vary by region. Billing & Renewal: Payment is charged to your Apple ID at purchase confirmation. Subscriptions auto-renew unless canceled at least 24 hours before the end of the current period. Manage or cancel anytime in your App Store account settings. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://playmayo.com/privacy

About

ParamWatch

Features
Read full description

ParamWatch turns your Apple Watch into a real-time dashboard for your body and your surroundings. No extra hardware, no subscription — just clean, live data directly from your watch sensors. BIOMETRICS PAGE · Heart Rate — continuous BPM from HealthKit · SpO₂ — blood oxygen saturation · HRV — heart rate variability in milliseconds, a key indicator of recovery and stress · Respiratory Rate — breaths per minute ACTIVITY PAGE · Speed — real-time GPS speed in km/h with satellite lock indicator · Altitude — elevation above sea level in metres · Distance — total walking/running distance for the day · Steps — step count since midnight · Calories — active energy burned today · Weather — outdoor temperature and humidity, refreshed every 2 minutes from your current location DESIGNED FOR WATCH ParamWatch is a standalone watchOS app. No iPhone app required, no companion needed. The interface fits the watch face with two swipeable pages so every metric is one glance away. PRIVACY FIRST All health data stays on your device. ParamWatch reads from HealthKit but never stores or uploads your personal data. Weather is fetched anonymously from the open-source Open-Meteo API using only your current coordinates — no account required. COMPLICATION INCLUDED A watch complication lets you pin heart rate, speed, and distance directly on any watch face that supports rectangular complications. The widget displays a real-time heart rate sparkline chart alongside four key metrics — heart rate, blood oxygen, steps, and calories — refreshing every 5 seconds. The redesigned complication features a clean black background with color-coded icons for at-a-glance readability on any watch face. Real time notifications: the app monitors your heart rate and blood oxygen in real time, alerting you with a haptic and notification if your heart rate stays above 170 BPM or below 45 BPM, or if your SpO₂ drops below 90% for more than 30 seconds.

Screenshots

Mayo4 screens

Verdict

The call

The clearest difference is in-app purchases: ParamWatch at none against Mayo's 4. ParamWatch also leads on iOS requirement (16.0 vs 18.2). On price, update cadence, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Mayo sells 4 in-app purchases, starting at $9.99 per month. ParamWatch asks for nothing beyond the download.

UpkeepUpdate frequency

Mayo ships an update every 6 days, ParamWatch every 11 days. The most recent releases landed on October 24, 2026 and October 16, 2026 respectively.

Scorecard2 real differences · 4 level
Mayo versus ParamWatch: the parameters behind the verdict, then further details
ParameterMayoParamWatch
PriceFreeFree
Update frequencyEvery 6 days — betterEvery 11 days
AdsNoNo
In-app purchasesYesNo — better
DevicesiPhone, Apple WatchiPhone, Apple Watch
Requires iOS18.216.0 — better
Further details — not scored
Size74 MB1 MB
Age rating17+4+
DeveloperMizu Health LtdLuca Ceci

In-app purchases

4 purchases

Mayo

Subscriptions4
  • Monthly Premium Subscription7 Days trial$9.991 Month
  • Pro Monthly7 Days trial$19.991 Month
  • Yearly Premium Subscription7 Days trial$69.001 Year
Show 1 more
  • Pro Yearly - 40% Off7 Days trial$139.991 Year
None

ParamWatch

No in-app purchases

Questions

Is Mayo free?
Mayo is free to download, with in-app purchases available.
Is ParamWatch free?
ParamWatch is free to download, with no in-app purchases.
Do Mayo or ParamWatch have ads?
Neither Mayo nor ParamWatch shows ads.
Which is updated more often, Mayo or ParamWatch?
Mayo ships an update every 6 days, and ParamWatch every 11 days. Most recently, Mayo was updated on October 24, 2026 and ParamWatch on October 16, 2026.

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