Smile Train vs Gnathic
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Smile Train
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The Smile Train Virtual Surgery Simulator An interactive way of learning cleft surgical techniques Smile Train, the world's largest cleft charity, has partnered with BioDigital to launch the first web-based, 3D, interactive surgical explorer for cleft care. The Smile Train Virtual Surgery Simulator provides surgeons around the world with next generation surgical training technology for learning surgical techniques in cleft lip and palate repair. Through leveraging state-of-the-art technology, Smile Train and BioDigital aim to change the world, one smile at a time. FEATURES * Interactive Exploration: Explore the virtual cleft lip and palate in interactive 3D * Simulation of Surgical Procedures: Interact with primary and secondary cleft repairs step by step * Descriptions and Audio: Read and listen to chapters detailing each step of the procedures * Live Surgical Videos: Access live surgical video at each step of the procedure * Expert Tutorials: Follow expert opinion on critical landmarks and incisions * Quiz Engine: Test your knowledge using the quiz engine Smile Train's VISION Every child born with a cleft - anywhere in the world - should have the opportunity to live a full and productive life. Smile Train supports innovative education and training programs, including the Cleft Surgical Simulator, to empower local medical professionals to provide safe, quality, timely, free and cost-effective comprehensive cleft treatment for the millions of poor children around the world who suffer from cleft lip and/or palate.
Gnathic
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A first-generation smartphone app to evaluate and follow retrognathia (micrognathia) and facial growth in infants. The co-existence of micrognathia and mandibular retrusion with other conditions has received little attention in non-syndromic patients. These include feeding difficulty, oro-myofunctional problems, orthodontic development and airway concerns (references). Clinical diagnosis is often reduced to βclinical impressionβ in an attempt to avoid invasive diagnostic procedures such as radiographs, CAT scans and other 3D imaging. Screening indices dependent on invasive diagnostics help to define the maxillo-mandibular relationship and other indices have been suspect of inaccuracies. The gnathic-click app algorithm incorporates 5 indices commonly used to define the retrognathic mandible and is useful as a screening tool to predict the retrognathic grower from the time of birth. Its use will build a database to help clinicians identify non-syndromic patients that will benefit from early diagnosis and interceptive treatment. Note: The app is an educational tool for dental professionals involved in early diagnosis and intervention planning of oral facial growth problems in babies/toddlers. Medical Disclaimer: The Gnathic-Click app is designed for educational and informational purposes only and is not intended to replace professional medical advice, diagnosis, or treatment. While the app provides useful insights into retrognathia (micrognathia) and facial growth in infants, it should not be used as a sole tool for medical diagnosis or treatment planning. Always consult with a qualified healthcare professional for personalized medical advice. The use of this app should complement, not replace, the expert judgment of healthcare professionals. Any reliance on the information provided by the Gnathic-Click app is solely at your own risk.
Screenshots
Verdict
Smile Train and Gnathic are too close to call on the numbers: across 6 compared parameters β price, update cadence, ads and in-app purchases among them β neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Smile Train ships an update every 4 months, Gnathic every 6 months. The most recent releases landed on August 14, 2026 and September 14, 2026 respectively.
| Parameter | Smile Train | Gnathic |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 4 months β better | Every 6 months |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 | 12.0 |
| Further details β not scored | ||
| Size | 64 MB | 43 MB |
| Age rating | 17+ | 17+ |
| Developer | BioDigital, Inc. | David A. Tesini DMD and ASSOC, LLC |
In-app purchases
Smile Train
No in-app purchases
Gnathic
No in-app purchases








