DrStemo vs NIK
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DrStemo
This app pairs with Stemoscope wireless stethoscopes to enhance listening to heart and lung sounds. It is intended for use with the Stemoscope PRO and Stemoscope II devices. Users should consult a doctor for medical decisions, as the app and device are not for self-diagnosis.
- Connects to Stemoscope PRO and II
- Record body sounds
- Enhance listening experience
- FDA cleared device companion
- Not for self-diagnosis
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This app is the companion app for Stemoscope Smart Wireless Stethoscope including Stemoscope PRO (Model STEMO700) and Stemoscope II (Model STEMO300). If you are a lay user (non-professional user), please seek a doctor’s advice in addition to using this app and before making any medical decisions. The app and the associated device is not intended for self diagnosis. The Stemoscope II and Stemoscope PRO used with this app is cleared by FDA in USA. The use of Stemoscope Smart Wireless Stethoscopes in other region may subject to local regulatory clearance.
NIK
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NIK – Discover Your Pulse Patterns Visualize your body's response during your session. Use our "investigations" feature to compare sessions, spot patterns and trends, and gain a clearer perspective on your daily lifestyle. Discover Your Body's Unique Language NIK (Now I Know) cuts through the noise of generic wellness advice by providing immediate, in-the-moment pulse visualizations. By observing how your body responds to different foods, drinks, and environments, you gain a new layer of information to help inform your daily choices. Personalized Food Investigations Easily observe how specific foods or entire categories influence your pulse. Compare similar items—like dairy vs. non-dairy or caffeinated vs. decaf coffee—to discover the habits and foods that work best for your body. Live Pulse Visuals You can choose to view live graphs of your pulse before, during, and after meals. Easily spot trends and variations without the need for spreadsheets or manual logging. Built-in Wellness Journal Log your post-meal reflections, energy, mood, and other daily metrics all in one place. Observe patterns over time to support your lifestyle decisions. Guided Observation Workflow Set up structured sessions with minimal effort. Move beyond tedious food diaries—NIK walks you through each step and captures your session for instant visualization. Apple Watch Integration Automatically sync pulse data directly from your Apple Watch. NIK guides you through a simple setup to ensure your wellness data is ready for immediate visualization. A Systems Approach to Wellness Developed by Joyce Waterhouse, PhD, and grounded in systems thinking and careful observation, NIK is designed to help you objectively visualize and understand your body's unique patterns. What's Coming Get early access to new features, tools, and insights before they are publicly released. Help shape the future of NIK and be among the first to discover new ways to visualize your wellness journey. Lightweight & Intuitive Interface Designed for ease of use, with a clean layout and guided steps—perfect for anyone curious about tracking their wellness through wearables. Support When You Need It Contact our team anytime at support@nowiknow.io. We're here to support your wellness journey.
Screenshots
Verdict
The clearest difference is device support: NIK at 4 against DrStemo's 2. DrStemo's advantage is iOS requirement (10.0 vs 15.0). On price, 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. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | DrStemo | NIK |
|---|---|---|
| Price | Free | Free |
| Rating | 1.7 (9 ratings) — better | — |
| Positive reviews | 7.7% of reviews | — |
| Number of ratings | 9 — better | — |
| Update frequency | Every 2 months | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod, Apple Watch — better |
| Requires iOS | 10.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 34 MB | 21 MB |
| Age rating | 12+ | 17+ |
| Developer | Shanghai Hulu Devices Co Ltd | Allergy, Inflammation and the Microbiome Research Institute Inc |
In-app purchases
DrStemo
No in-app purchases
NIK
No in-app purchases






