Whistle vs Kasane
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Whistle
This AI-powered app creates personalized training plans for running, cycling, swimming, and strength training. It adapts to your schedule and goals, offering insights into your progress and recovery. Seamlessly integrates with Apple Watch and HealthKit for a comprehensive fitness experience.
- AI-powered personalized training plans
- Adaptive scheduling and goal setting
- Progress tracking and recovery insights
- Integration with Apple Watch and HealthKit
- Weather-aware planning for outdoor sessions
- Structured workout creation with templates
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Whistle is an AI training planner for running, cycling, swimming, strength work, and everything in between. Build a plan around your goals, adapt it when life changes, and understand what your training is doing over time. Plan with a coach that understands your week Ask Whistle to build a training week, create a longer program, adjust a workout, review your progress, or explain what your body is telling you. Your coach can use your goals, schedule, recent workouts, recovery, sleep, vitals, and local weather to help you make better training decisions. Training programs, not just single workouts Start a guided setup, tell Whistle what you are training for, and get a structured program you can follow week by week. Already following a plan? Bring that structure into Whistle and let your coach help you keep it organized. Workout planning that stays flexible Plan workouts for today, the week ahead, or a longer training block. Create structured sessions with warmups, intervals, targets, cooldowns, and activity-specific goals. Save workouts as templates so repeated sessions are ready when you need them. Train with better context Whistle turns workout and health data into practical planning support: - Training load to understand how much work you are absorbing - Projected load to see how planned workouts may shape your week - Recovery, sleep, and vital trends for daily context - Workout predictions for distance, duration, calories, and load - Training insights, heatmaps, and streaks to review consistency over time - Weather-aware planning with multi-day forecasts for outdoor sessions Apple Watch ready Send planned workouts to Apple Watch and start them from your wrist. Whistle also works with Apple’s Workout app experience, so your sessions fit into the tools you already use. Works with Apple Health (HealthKit) When you choose to share Apple Health data, Whistle can use workouts, activity, heart rate, recovery, sleep, and vitals to make planning and coaching more personal. The goal is useful training insight, not medical advice. Built privacy-first No account is required. Your workout and health data are handled with care, stored locally and in your personal iCloud where possible, and used only to power the features you choose. When AI processing is needed, Whistle uses the data required for the task instead of building a long-term personal profile on our servers. Some features require Pro or Ultra. Health, weather, watch, and AI features depend on device capabilities, permissions, region, and data availability.
Kasane
This app creates personalized daily routines and habits based on your health data, lab results, and medical history. It guides you to focus on one habit at a time, building a growing collection of evidence-backed lifestyle interventions.
- Personalized Focus Plan
- Evidence-backed habit library
- One habit at a time focus
- Daily routine anchoring
- Health data integration
- Voice and automatic check-ins
- Family sharing
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Bloated after lunch again? Dragging by 2 pm? Up at 3 am? Kasane is a health journal that helps you see what's behind it, for you and everyone you look after. WRITE IT DOWN, KASANE FILES IT Type a meal, a headache, a workout, or a dose the way you'd text a friend. Kasane files each one into your day at the time it happened, next to your routines and Apple Health. Add a photo and it reads that too. YOUR MORNING AT A GLANCE See last night's sleep and five overnight vitals (heart rate, HRV, breathing rate, wrist temperature, and blood oxygen), each shown against your own usual range. Your routines are ready to check off, and Magical Check-ins tick off workouts, steps, and sleep from Apple Health on their own. ASK ABOUT ANYONE'S HEALTH Ask a question and get an answer that points back to the journal, labs, and documents behind it. "When did Leo's fever start?" "How has my LDL changed this year?" LABS AND VISIT NOTES IN ONE PLACE Add a lab report or a visit summary. Kasane reads it on your phone, lays out the results for you to confirm, and keeps every value with its date. A PLAN THAT FITS YOUR DAY Tell Kasane what you'd like to feel better about. It suggests a few small habits, each backed by research, placed in the routines you already have, and adjusts as the weeks go by. FOR YOUR FAMILY Keep your kids' and parents' health here too. Share a child with your co-parent and you both write in the same journal. Invite family to cheer you on, and choose exactly what each person can see. PRIVATE BY DESIGN Your journal lives on your phone and in your own iCloud, with no Kasane account. With your permission, Kasane sends only what each request needs to Claude, by Anthropic, which doesn't train on it and deletes it within 7 days. Apple Health readings stay on your phone; only short summaries go into a request. KASANE FAMILY Start with a free week, then $9.99 a month or $79.99 a year. Share it with up to five others through Family Sharing. Payment is charged to your Apple Account when the free week ends. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period, and you can manage or cancel any time in your Apple Account settings. Terms of Use: https://www.kasanelife.com/terms.html Privacy Policy: https://www.kasanelife.com/privacy.html Kasane keeps your health record and suggests small daily habits. For medical questions, talk with your clinician.
Screenshots
Verdict
The clearest difference is rating: Kasane at 5.0 against Whistle's 4.3. Kasane also leads on update cadence (weekly vs every 3 weeks). Whistle's advantage is ratings volume (11 vs 1) and iOS requirement (18 vs 27.0). On price, ads, in-app purchases and monetization model 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. Whistle sells 5 in-app purchases, starting at $4.99 per month and Kasane sells 4 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.
Kasane holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: Whistle has 11 ratings behind it against 1, so its average is the more settled of the two.
Whistle ships an update every 3 weeks, Kasane weekly. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.
| Parameter | Whistle | Kasane |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (11 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 11 — better | 1 |
| Update frequency | Every 3 weeks | Weekly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, Apple Watch — better | iPhone, iPad |
| Requires iOS | 18 — better | 27.0 |
| Further details — not scored | ||
| Size | 100 MB | 111 MB |
| Age rating | 17+ | 17+ |
| Developer | Vogelhaus Apps GmbH | Enchant Health LLC |
Customer experience
Whistle
Kasane
In-app purchases
Whistle
- Pro 1 Month$4.991 Month
- 1 Ultra Month$9.991 Month
- Ultra 3 Months3 Days trial$24.993 Months
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- Pro 1 Year7 Days trial$39.991 Year
- Ultra 1 Year$99.991 Year
Kasane
- Kasane Family (Monthly)7 Days trial$9.991 Month
- Inner Circle (Monthly)$39.991 Month
- Kasane Family (Annual)7 Days trial$79.991 Year
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- Inner Circle (Annual)$359.991 Year









