Syd vs Kalibra
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Syd
This AI-powered mentor offers personalized, science-backed recommendations to help you improve your physical and emotional health, financial well-being, and social life. Access a hub of resources, gain self-awareness through AI insights, and integrate with Apple Health for comprehensive tracking.
- AI Life Quality Mentor Chat
- Personalized Science-Backed Recommendations
- Education Hub (Articles, Meditations, Recipes)
- AI-Powered Personal Insights
- Apple Health Integration
- Life Quality Index™ Tracking
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Discover the life you love with syd™ We all want to uncover our potential to enjoy fulfilling and healthy lives — but often we limit ourselves by the choices we make. Be it striving to find your purpose or optimising your health, you will reach your goal faster with the support of your AI-powered Life Quality Mentor – syd™, available at your fingertips. With the syd™ Super-App, you can get powerful personalised science-backed recommendations and support to discover your pathway towards a life you love. AI Life Quality Mentor: Chat with syd™, your AI Life Quality Mentor, anytime about anything - from physical and emotional health to financial wellbeing, social life, and more. syd™’s responses and guidance are personalised and evidence-based, helping you navigate every aspect of your life quality with confidence. Evidence-Based Recommendations: syd™’s AI is trained on 1.2 million scientific studies and 8.3 billion person-years of data to deliver recommendations that are not only personalised, but proven. Education Hub: Access a library of articles, meditations, recipes, and science-backed resources designed to help you build healthier habits and understand yourself better. Personal Insights: Gain deeper self-awareness through AI-powered insights into your mood, personality, stress, and Life Quality Index™ - revealing patterns, highlighting opportunities for growth, and supporting meaningful, lasting improvements in your life quality. Our proven AI platform is backed by a team of dedicated scientists, mathematicians, engineers and creatives; bringing together the very best in research, global data and genetics – applied for the benefit of entire communities. Integrate Apple Health with syd™ to synchronize and view your biometrics right in the app to tailor recommendations, motivate, and track goal progression. Privacy is at the core of everything we do and we mean it – read more about our terms and conditions here: Terms of service: https://syd.iamyiam.com/en/terms/ Privacy notice: https://syd.iamyiam.com/en/user-privacy/ Our platform and services contain general medical information. The information is not medical advice, and should not be treated as such.
Kalibra
This app applies physical science methods to health, quantifying and analyzing markers through precise diagnostics and advanced data analysis. It integrates with Apple Health to guide users toward a balanced physical, mental, and social well-being.
- Precise diagnostic measurements
- Advanced data analysis
- Machine learning insights
- Inferential statistics
- Apple Health integration
- Holistic health balance guidance
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Kalibra is built on applying the methods of physical sciences to health—quantifying and analysing health markers through precise diagnostic measurements, advanced data analysis methods, machine learning, and inferential statistics. Kalibra uses Apple Health integration to help you achieve a healthy balance between the physical, mental, and social aspects of your health by guiding your efforts towards where they are most needed. For monthly subscriptions providing access to premium features, we are using the standard Apple Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is review sentiment: Kalibra at 100% against Syd's 87%. 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. Syd sells 1 in-app purchase, starting at $24.99 per month and Kalibra sells 1 in-app purchase, starting at $19.99 per month. Whichever you choose, the download price is not the number that matters.
Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on October 26, 2026 and October 13, 2026 respectively.
| Parameter | Syd | Kalibra |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (11 ratings) — better | — |
| Positive reviews | 87.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 11 — better | — |
| Update frequency | Every 2 weeks | Every 2 weeks |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.1 | 15.1 |
| Further details — not scored | ||
| Size | 263 MB | 63 MB |
| Age rating | 4+ | 4+ |
| Developer | iamYiam | Kalibra |
Customer experience
Syd
Kalibra
In-app purchases
Syd
- Discovery Membership$24.991 Month
Kalibra
- Enhanced (monthly)$19.991 Month








