Varzo vs Aera
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Varzo
This app analyzes your Apple Watch and Health data to provide insights into recovery, sleep, strain, and energy levels. It offers AI-powered coaching and personalized goal setting to help you train smarter and recover better. All data processing is done privately on your device.
- Recovery Score analysis
- Sleep stage tracking
- Cardiovascular strain monitoring
- Real-time energy level tracking
- Personalized goal setting
- 7, 30, 90-day trend analysis
- On-device AI coaching
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Know your body. Optimize your recovery. Built for Apple Watch owners. Varzo turns the heart rate, HRV and sleep data your watch already collects into insights about your recovery, sleep, strain and energy — all processed privately on your device. An Apple Watch is required. Varzo reads the data your watch records; it does not replace it. ON YOUR WRIST, AND AT A GLANCE • Apple Watch app — Recovery, Strain and Body Battery on your wrist • Watch face complications in four styles, so your recovery is there every time you check the time • Home Screen and Lock Screen widgets on iPhone • Everything syncs from your iPhone automatically — nothing extra to set up AI-POWERED COACHING Personalized insights powered by Apple Intelligence. Get tailored coaching on your recovery, sleep, strain, and energy with all AI processing happening entirely on your device. On devices without Apple Intelligence, smart rule-based insights keep you informed. FOUR METRICS THAT MATTER • Recovery Score — Wake up knowing if your body is ready to push hard or needs rest. Calculated from your HRV, resting heart rate, and sleep quality. • Sleep Analysis — Go beyond hours slept. See your sleep stages, efficiency, and consistency to understand what truly restful sleep looks like for you. • Strain Score — Track your cardiovascular load throughout the day. Balance high-intensity training with proper recovery to maximize results. • Body Battery — Watch your energy level change in real-time. Start each day with a full charge and see how activity depletes and rest restores your reserves. SET GOALS THAT MOVE YOU FORWARD Create personalized weekly goals for workouts, steps, calories, hydration, and more. Track your progress with intuitive visualizations and stay motivated with daily insights. TRENDS & INSIGHTS View your 7, 30, and 90-day trends. Understand your personal baselines and see how your recovery, sleep, and strain evolve over time. PRIVACY FIRST — WE COLLECT NOTHING No analytics. No tracking. No accounts. No servers. Your recovery, sleep, heart rate and every other health metric are read from Apple Health, processed entirely on your iPhone, and never leave it — never uploaded, never stored in the cloud, never shared, never tied to an identity. AI coaching runs on-device using Apple Intelligence, so even your insights are generated privately. There is no sign-up, because there is nothing for us to store. SUBSCRIPTION TERMS Varzo offers an auto-renewable annual subscription with a 14-day free trial. Payment is charged to your Apple ID account when the free trial ends, unless you cancel at least 24 hours before it finishes. Subscriptions renew automatically each year unless auto-renew is turned off at least 24 hours before the end of the current period. You can manage or cancel your subscription in your App Store account settings. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://varzo.ai/privacy.html
Aera
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Aera plans running loops from your door, replays your recent runs in 3D over the real ground, and reads your sleep and recovery against your own usual, on iPhone and Apple Watch, with no account. Aera reads Apple Health on your iPhone. Every run, walk, ride and night is read against your own usual, and every number opens the article behind it. TODAY: HARD, EASY OR REST Your recovery, sleep, stress and recent training decide the call, free for everyone. With Premium, Aera writes today's session: how long and how hard. PICK A DISTANCE. AERA DRAWS THE LOOP. Up to three loops that start and end where you stand: one on ground you know, one new to you, and one off-road, or along cycleways on a ride. Size them by distance or by minutes. Where there is enough to see, a Sights loop passes the best-known places, and a loop past a viewpoint can be timed for the sunset. DRAW YOUR OWN Tap and the line keeps to real paths, or drag to draw freehand. The distance counts as you draw. Open a GPX file and it is ready to follow. EVERY TURN, BEFORE IT COMES Turn by turn on your iPhone and Apple Watch, spoken if you want it, with a word when you leave the route and when you are back on it. EVERY WORKOUT, EXPLAINED Splits, heart rate zones, climb and the effort the session actually cost you, against your own usual. Fly back over any run from the last seven days. READ AGAINST YOU, NOT AN AVERAGE Recovery, stress, strain and sleep are scored against a baseline learned from your own nights and sessions. While your history is thin, Aera says so instead of guessing. YOUR NIGHT, IN ITS OWN SHAPE The stages as they happened, the hours you slept, and how far that sat from the need Aera learned from you. EVERY NUMBER, EXPLAINED The Field Guide explains how each read is built, the research behind it, and where it stops being reliable. ON YOUR HOME SCREEN Widgets in every size, on the Home Screen and the Lock Screen. FREE Recovery, stress, strain and your sleep score, every day. Hard, easy or rest. Loops, the route planner and turn by turn. Every workout read, every personal best and your recap films. Flyover for the last seven days. Twelve months of history, and your raw data out as JSON or GPX. PREMIUM Today's session. Your sleep reserve. Your places. Flyover for older routes. Every route you draw kept (the first one is free). History past twelve months. Reports and every export format. Monthly, yearly, or once and yours for good. PRIVACY Health numbers stay on your iPhone. No account, no sign in. Your scores are computed on your iPhone, and there is no language model anywhere in the app. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is iOS requirement: Varzo at 17.0 against Aera's 26.0. On price, update cadence, ads and in-app purchases 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
Both are free to download. Varzo sells 1 in-app purchase, starting at $9.99 per year and Aera sells 3 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.
Varzo ships an update every 6 days, Aera every 4 days. The most recent releases landed on October 31, 2026 and October 25, 2026 respectively.
| Parameter | Varzo | Aera |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (5 ratings) — better | — |
| Number of ratings | 5 — better | — |
| Update frequency | Every 6 days | Every 4 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | — |
| Devices | iPhone, Apple Watch | iPhone, Apple Watch |
| Requires iOS | 17.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 6 MB | 111 MB |
| Age rating | 4+ | 4+ |
| Developer | Pankaj Sharma | Gergo Varga |
In-app purchases
Varzo
- varzo Annual14 Days trial$9.991 Year
Aera
- Aera Premium Monthly$9.991 Month
- Annual7 Days trial$29.991 Year
- Aera Premium Lifetime$99.99









