Altoida vs PrepNavigator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Altoida
Measure and monitor your brain health with this app-based tool. It uses advanced technology to analyze eye movement for cognitive assessment, providing educational insights. Consult healthcare professionals for personalized advice.
- Brain health measurement
- Cognitive assessment aid
- Eye movement analysis
- Educational insights
- Global user community
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Altoida is the #1 app-based tool for measuring and monitoring your brain health. Join the global community of Altoida users in understanding your brain and taking control of your health. Altoida's technology is 510k exempt to be used as a computerized cognitive assessment aid, recognized by the U.S. Food and Drug Administration (FDA). It has not been cleared or approved by the FDA for any other use. The Altoida application is not intended to diagnose, treat, cure or prevent any disease. The information provided is intended for educational purposes only and should not be considered medical advice. Please speak with an appropriate healthcare professional when evaluating any wellness-related therapies or lifestyle modifications, or regarding any questions or concerns about your specific health situation. To learn more about Altoida's science, technology, and validated scoring methods, please consult our trial publications in the U.S. National Library of Medicine and our peer-reviewed studies: • https://clinicaltrials.gov/ct2/show/NCT02843529 • https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4879487/ • https://games.jmir.org/2013/1/e1/ • https://www.sciencedirect.com/science/article/pii/S2352873718300210. The front-facing camera on compatible devices is used through the TrueDepth API to register the eye movement of the user. Only abstract statistical data of the eye movement is analyzed and no images of the user are stored or transmitted at any time. During the augmented reality test, no images of either camera are recorded, stored, or transmitted at any time. No device IDs, UDIDs, or any other information capable of re-identifying your device is recorded, stored, or transmitted. The anonymized abstract statistical data of each test is stored for analysis and will be deleted upon request. For this purpose, contact support@altoida.com.
PrepNavigator
This app simplifies colonoscopy preparation with personalized instructions, timelines, and medication reminders. It offers an AI assistant for questions and secure, HIPAA-compliant access to your health information.
- Personalized prep instructions
- Step-by-step preparation timeline
- Medication hold reminders
- Dietary guides
- AI-powered prep assistant
- Secure access
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PrepNavigator makes colonoscopy preparation simple, clear, and stress-free for patients. Your personalized prep instructions are always at your fingertips — no paperwork, no confusion, just clear guidance when you need it. WHAT YOU GET: - Personalized colonoscopy prep instructions from your doctor - Step-by-step preparation timeline with exact times - Medication hold reminders tailored to your prescriptions - Clear liquid and low-fiber diet guides - AI-powered prep assistant to answer your questions 24/7 - Secure access with Face ID / Touch ID or 6-digit passcode DESIGNED FOR PATIENTS: PrepNavigator is provided by your gastroenterology or endoscopy center. You will receive a secure access code from your care team to get started. SECURE & HIPAA COMPLIANT: Your health information is protected with bank-level encryption. PrepNavigator is fully HIPAA compliant and built specifically for healthcare. Based on 2025 AGA Guidelines for optimal colonoscopy preparation. Always consult your healthcare professional for medical advice, diagnosis, or treatment.
Screenshots
Verdict
The clearest difference is rating: PrepNavigator at 5.0 against Altoida's 4.3. PrepNavigator also leads on update cadence (weekly vs monthly). Altoida's advantage is ratings volume (29 vs 5) and iOS requirement (13.0 vs 16.0). On price, review sentiment, 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.
PrepNavigator holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: Altoida has 29 ratings behind it against 5, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.
Altoida ships an update monthly, PrepNavigator weekly. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.
| Parameter | Altoida | PrepNavigator |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (29 ratings) | 5.0 (5 ratings) — better |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 29 — better | 5 |
| Update frequency | Monthly | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 84 MB | 9 MB |
| Age rating | 4+ | 17+ |
| Developer | Altoida AG | Prep X Medical, Inc |
Customer experience
Altoida
PrepNavigator
In-app purchases
Altoida
No in-app purchases
PrepNavigator
No in-app purchases









