Stemoscope vs Keikku
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Stemoscope
This app allows users to listen to various body sounds wirelessly via a small, wearable device. It's designed for STEM education, recreation, and general appreciation of life's sounds, offering features like sound recording, sharing, and playback speed adjustment.
- Wireless Bluetooth audio transmission
- Record and save sounds
- Share recordings via email
- Playback at half speed
- STEM mode for infrasound detection
- Customizable sound filters and pitch shifting
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Stethoscope is evolving. Many doctors use traditional stethoscopes such as Littmann (not Littman). Some are trying Eko stethoscope, evolved but still hung over the neck. Stemoscope is very different. It is designed for everyone to listen to the heartbeat (heart beat) or breath sounds, or many other sounds of life, for STEM education, recreations and many other purposes. It is a tubeless stethoscope. It is a wireless stethoscope. It is a Bluetooth stethoscope. It is a digital stethoscope. It is a mobile stethoscope. It is a smartphone stethoscope. It is a wearable stethoscope. It is likely the smallest stethoscope in the world. It is Stemoscope. Sounds tell stories of life. They come from inside of a person, your pet or a plant and emanate outwards for us to discover and to appreciate. Stemoscope detects sounds and transmits them wirelessly to your smart devices, phones or tablets, eliminating the cumbersome tube of the traditional stethoscope. A user can choose either a wired or wireless earphone to listen to these engaging sounds. Stemoscope is the world's first wearable stethoscope. With the specially designed strap (might need to be ordered separately), you can easily wear it or carry it easily with you. It is so small that you can store it with your earphone in the same bag. The stemoscope comes with an engaging App with many rich and useful features that are easy to use by anyone. You can save the sounds and the locations where the sound comes from. You can share the recorded sounds with others through emails. The App supports playback at half the normal speed so that it is easier for anyone to recognize the detailed sound characteristics. In the STEM mode, the stemoscope can even detect infrasounds that can‘t be heard by our bare ears. You can design your own sound filter or shift the sound pitch to hear sounds in a different and sometimes more insightful manner.
Keikku
Transform your smartphone into a diagnostic tool for heart sounds. Visualize, analyze, and track heartbeats with detailed waveforms and spectrograms. Securely manage and share recordings for enhanced patient care or personal health monitoring.
- Real-time heart sound visualization
- Accurate heart sound tracking
- Seamless data management
- User-friendly interface
- Waveform and spectrogram analysis
- Secure recording storage and sharing
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Keikku is an AI Clinical Platform designed to support clinicians throughout the patient encounter. Rather than switching between multiple disconnected tools, Keikku brings documentation, clinical reference, and AI-powered workflows together in one connected platform. Features • AI Scribe - Generate structured clinical documentation while you focus on your patient. • Clinical Reference - Search millions of evidence-based medical sources directly within your workflow. • Diagnostics AI - Access AI-powered clinical tools designed to support patient care. • One Connected Workflow Move seamlessly between documentation, research, and clinical insights without interrupting your consult. Designed For • Physicians • Nurse Practitioners • Physician Assistants • Residents • Medical Students • Specialists • Primary Care Why Keikku Modern healthcare requires more than a single AI tool. Keikku combines documentation, clinical reference, and intelligent clinical workflows into one AI Clinical Platform built for everyday practice. Download Keikku and explore the platform for free. Disclaimer: The Keikku device is not a substitute for professional medical advice, diagnosis, or treatment. Please consult a doctor before making any medical decisions based on the information provided by this app. Regulatory Information: The Keikku Electronic Stethoscope is an FDA-cleared Class II medical device (510(k) K233313) authorized for marketing in the United States. It is intended for use on pediatric and adult patients by professional users in a clinical environment or by lay users in a nonclinical environment. The device is not intended for self-diagnosis. Outside the United States, the Keikku device is for investigational use only. A clinical trial is currently registered and active in Peru (ClinicalTrials.gov ID: NCT07044128). CE marking under the EU Medical Device Regulation (MDR 2017/745) is in progress. Users outside the United States will see an investigational use disclaimer within the app. Always consult a qualified healthcare professional before making any medical decisions.
Screenshots
Verdict
The clearest difference is review sentiment: Keikku at 100% against Stemoscope's 14%. Keikku also leads on rating (4.0 vs 2.7). Stemoscope's advantage is ratings volume (16 vs 4) and iOS requirement (9.0 vs 14.0). 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. Neither carries in-app purchases, so what you see is what you pay.
Keikku holds the better App Store score, 4.0 against 2.7. Both are backed by a comparable volume of ratings — 16 and 4 respectively. Written reviews point the same way: 14% of Stemoscope's written reviews are positive against 100% of Keikku's.
Stemoscope ships an update every 3 weeks, Keikku fortnightly. The most recent releases landed on October 6, 2026 and October 11, 2026 respectively.
| Parameter | Stemoscope | Keikku |
|---|---|---|
| Price | Free | Free |
| Rating | 2.7 (16 ratings) | 4.0 (4 ratings) — better |
| Positive reviews | 14.3% of reviews | 100.0% of reviews — better |
| Number of ratings | 16 — better | 4 |
| Update frequency | Every 3 weeks | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 9.0 — better | 14.0 |
| Further details — not scored | ||
| Size | 19 MB | 208 MB |
| Age rating | 12+ | 4+ |
| Developer | Shanghai Hulu Devices Co Ltd | keikku |
Customer experience
Stemoscope
Keikku
In-app purchases
Stemoscope
No in-app purchases
Keikku
No in-app purchases




