ODC Tutor vs SOAP Notes Logbook
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ODC Tutor
Visualize and understand the oxygen-hemoglobin dissociation curve. This medical tool shows the relationship between oxygen partial pressure and hemoglobin saturation, highlighting factors that shift the curve and critical care points.
- Visualize oxygen-hemoglobin dissociation curve
- Shift curve right/left to show affinity changes
- Display causes for curve shifts
- Show arterial and venous saturation
- Indicate P50 value
- Highlight ICU point for critical care monitoring
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Title: The ODC App: A Guide to Understanding the Oxygen-Hemoglobin Dissociation Curve Introduction: The ODC app is a medical tool that allows users to visualize and understand the oxygen-hemoglobin dissociation curve, an essential concept in respiratory physiology. Developed by a team of medical professionals, this app offers a user-friendly interface that displays the relationship between partial pressure of oxygen (ODC's horizontal axis) and hemoglobin saturation (ODC's vertical axis) in a sigmoid curve. Features: The app's normal sigmoid curve can be shifted to the right or left, indicating the decreased and increased affinity of hemoglobin to oxygen, respectively. The app also displays the causes for the shift in the curve, helping users understand the factors that affect hemoglobin saturation. The application shows the fall in saturation of hemoglobin as the blood moves from the arterial to venous end, and the oscillating cursor indicates the heart rate which can be changed. The app displays both arterial and venous saturation and provides P50 value, which denotes the partial pressure of oxygen at which hemoglobin is 50% saturated (marked in the application). The ICU point is an important feature that the app highlights. It marks the point where partial pressure of oxygen of 60 mm Hg corresponds to a hemoglobin saturation of 90%. At this point, a small drop in pressure leads to rapid drops in saturation, indicating the need for close monitoring in critical care settings. Team Behind the App: The ODC app was developed by a team of medical professionals, including Dr. Satish Deopujari, a Professor Emeritus at Govt. Medical College Nagpur IGGMC, Adjunct Professor in Mechanical Engineering at VNIT Nagpur, Chairman Academics at Nelson Hospital Nagpur, Founder Chairman of the National Pediatric Intensive chapter, and President of the Society of Pediatric Cardiac Critical Care in Chandigarh. Dr. Lawrence Martin, Dr. Vivek Shivhare, and Dr. Shruti Deopujari were also part of the development team. Their collective experience in the medical field has contributed to the development of medical education and research in India. Dr. Satish Deopujari Dr. Lawrence Martin Dr. Vivek Shivhare Dr. Shruti Deopujari Disclaimer: The ODC app is based on literature and formulas available publicly in the medical domain. The content displayed is intended for knowledge purposes and is a guide only. It does not replace or substitute for any professional medical institute or educational organization. Sources: The ODC app is based on the following sources: Title: "Respiratory Physiology: The Essentials" Author: John B. West Year: 2004 Link: https://scholar.google.com/scholar_lookup?title=Respiratory%20Physiology%3A%20The%20Essentials&author=JB%20West&publication_year=2004&book=Respiratory%20Physiology%3A%20The%20Essentials Title: "Oxygen-haemoglobin dissociation curve: understanding the significance in cardiopulmonary resuscitation" Authors: Priya Rudingwa, Jay Prakash, and Anil Kumar Patil Year: 2018 Link: https://www.sciencedirect.com/science/article/pii/S1743181617306066?via%3Dihub Title: "The effects of hypoxia on human health and performance" Authors: J.R. Sutton and P.J. Reeves Year: 1992 Link: https://pubmed.ncbi.nlm.nih.gov/1465759/ Conclusion: The ODC app is an excellent resource for medical professionals, students, and enthusiasts who want to understand the complex relationship between oxygen and hemoglobin saturation. It is easy to use and provides a comprehensive visual representation of the ODC. Whether you are in a critical care setting or simply curious about respiratory physiology, the ODC app is a must-have tool that provides a simple and effective way to learn about this essential topic. So, apply, enjoy, and learn with the ODC app!
SOAP Notes Logbook
This app provides a professional, local-first solution for massage therapists to create and manage client SOAP notes. It offers structured editing, client summaries, and secure data export and backup, ensuring full ownership of records.
- Structured SOAP note editor
- Client summaries across sessions
- Interactive body diagrams
- CSV import and PDF/CSV/text export
- Encrypted backups
- Local-first data storage
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SOAP Notes Logbook is a professional, local-first SOAP notes app for massage therapists who value clarity, reliability, and full ownership of their records — now available on iPhone, iPad, and Mac. Write and review session notes calmly using a clean, structured editor built for real treatment workflows — not practice management software, not an EMR, and never tied to accounts or servers. Designed for real sessions Document each session using flexible SOAP fields, body diagrams, technique tags, and session context notes. All fields are optional, autosaved, and designed to stay out of your way while you work. Review session history by client, track progress over time, and update past notes without friction. Clear summaries across sessions Quickly review meaningful summaries generated from recent sessions to identify patterns without re-reading every note. Summaries highlight commonly worked areas, techniques, session context, and SOAP trends — with both concise overviews and detailed breakdowns available when needed. All summaries are derived entirely from your own notes and remain fully editable and reviewable. Import, export, and encrypted backups Bring in existing records with CSV import for clients and sessions. Export sessions anytime as PDF, CSV, or plain text — export is never restricted, even on the free version. Create encrypted backups for secure transfer and restore. Your data stays yours SOAP Notes Logbook stores all data locally on your device by default. There are no required accounts, no background sync, and no hidden systems. You remain in full control of your records at all times. Features • Structured SOAP note editor (Subjective, Objective, Assessment, Plan) • Client summaries across recent sessions • Flexible session context tracking (history, preferences, notes) • Interactive body area diagrams and technique tags • Client list with chronological session history • Read-only and editable session views • Autosave with clear update tracking • Local-first storage by default • CSV import for clients and sessions • PDF, CSV, and plain-text export • Encrypted backup and restore • Designed for iPhone, iPad, and Mac SOAP Notes Logbook is built to fully replace paper SOAP notes for solo massage therapists — without compromising trust, ownership, or long-term reliability. Free version includes 1 client and up to 3 sessions. Unlimited clients and sessions require a subscription or one-time purchase. Subscriptions include a 1-month free trial. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is review sentiment: ODC Tutor at 100% against SOAP Notes Logbook's 0%. ODC Tutor also leads on in-app purchases (none vs 3) and iOS requirement (13.0 vs 17.0). SOAP Notes Logbook's advantage is update cadence (fortnightly vs every 2 months). On price, ads and device support 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. SOAP Notes Logbook sells 3 in-app purchases, starting at $9.99 per month. ODC Tutor asks for nothing beyond the download.
ODC Tutor ships an update every 2 months, SOAP Notes Logbook fortnightly. The most recent releases landed on October 4, 2026 and September 18, 2026 respectively.
| Parameter | ODC Tutor | SOAP Notes Logbook |
|---|---|---|
| Price | Free | Free |
| Rating | — | 3.0 (4 ratings) — better |
| Positive reviews | 100.0% of reviews — better | 0.0% of reviews |
| Number of ratings | — | 4 — better |
| Update frequency | Every 2 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Requires iOS | 13.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 8 MB | 33 MB |
| Age rating | 17+ | 4+ |
| Developer | Satish Deopujari | Russell Thorman |
Customer experience
ODC Tutor
SOAP Notes Logbook
In-app purchases
ODC Tutor
No in-app purchases
SOAP Notes Logbook
- Monthly Access1 Month trial$9.991 Month
- Annual Access1 Month trial$99.991 Year
- Lifetime Unlock$179.99
Questions
Is ODC Tutor free?
Is SOAP Notes Logbook free?
Do ODC Tutor or SOAP Notes Logbook have ads?
Which is updated more often, ODC Tutor or SOAP Notes Logbook?
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