Comparison

VisualDx vs f

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

VisualDx

This visual reference tool aids medical professionals in improving patient engagement and diagnostic accuracy. It utilizes AI and a vast image atlas to help build custom differentials, share patient-specific images, and access comprehensive diagnostic information. Earn continuing education credits while making better medical decisions.

Highlights
  • Build custom differentials
  • Engage patients with visual aids
  • Improve diagnostic accuracy
  • Access therapy and test options
  • Recognize infectious diseases
  • Earn CME credits
Currently charting
Read full description

VisualDx is a visual reference tool for medical professionals that leverages AI technology and a comprehensive image atlas to support faster, more confident decisions, fewer unnecessary referrals and testing, and higher patient engagement and satisfaction. With VisualDx, clinicians can: • Build dynamic differentials that evolve as you think. • Use guided support to surface clinically relevant results. • Compare diagnoses to improve decisions for your patients. • Use our AI to take a picture of your patient’s skin condition to better understand morphology and possibilities. • Engage with patients by sharing pictures of skin that reflect their disease presentation. • Access therapy and testing recommendations across over 3,500 conditions. • Quickly recognize infectious diseases and travel-related illnesses with our public health resources. • Test your diagnostic skills with our image challenges and educational resources. • Earn 0.5 AMA PRA Category 1 Credits™ for internet point of care activity with every search. See why this award-winning clinical decision support system is being used in more than 2,300 hospitals, clinics, and medical schools by physicians, nurses, students, PAs, NPs, and other healthcare professionals worldwide. VisualDx requires a subscription. Terms of Use: https://www.visualdx.com/legal/acceptable-use-policy-notice Privacy Policy: https://www.visualdx.com/legal/privacy-policy/

About

f

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f-tree software has been mutually developed by the Iwate Tohoku Medical Megabank Organization, Iwate Medical University and Holonic Systems Ltd. http://iwate-megabank.org/en/genetic/ We first developed a desktop version that runs on windows and macos, and based on this we developed an iOS version. The ios version basically has the same functions as the desktop version. By installing this application, you are deemed to have agreed to the following terms. I agree to the following terms regarding the use of the family tree preparation software (f-tree) (hereafter referred to as “the Software”) that are released by the Iwate Tohoku Medical Megabank Organization, Iwate Medical University (hereafter referred to as “the Organization”). ・In principle,the Software shall be provided free of charge. ・It shall be verified that the computer used for operation complies with the usage conditions and validation required by the Software. ・The user shall bear complete responsibility for installing and using the Software. The Organization confirms that it will not bear liability for any or all the problems that the user might experience while installing or using the Software. The Organization also confirms that it will not bear liability for any dispute between the user and the third party (including but not limited to a dispute concerning copyright or other issue related to intellectual property right). ・If the Software is used to prepare a presentation for an academic organization, a published article, a book, or an entry in a company's pamphlet, the user shall provide the URL that is used to distribute the Software and an acknowledgement for its use. ・All the rights, such as copyright to the Software and copies of the Software, shall solely belong to the Organization. ・The Software shall not be used for any other purpose and shall not be distributed to a third party. ・The Software shall not be entirely or partly revised, modified, reverse engineered, compiled, or assembled. ・None of the part of the Software shall be copied, corrected, loaned, sold, distributed, or transferred. Additionally, copying without authorization is completely prohibited. ・The Software shall not be used for any commercial activity (rental, pseudo-rental, or sales to a third party). ・It must be confirmed that when the user is authorized to use the Software, this neither explicitly nor implicitly grants the user a guarantee of any kind. ・It shall be confirmed that the Software might be improved or modified without any prior notification. Please contact the following email address every time when researching,making a conference presentation, and presenting a paper with the software. f-tree@iwate-med.ac.jp Also, please quote the following literature when using the software for an academic paper. Tokutomi T, Fukushima A, Yamamoto K, Bansho Y, Hachiya T, Shimizu A. BMC Med Genet. 2017;18:71. https://bmcmedgenet.biomedcentral.com/articles/10.1186/s12881-017-0433-4

Screenshots

VisualDx4 screens
f4 screens

Verdict

The call

The clearest difference is in-app purchases: f at none against VisualDx's 11. f also leads on iOS requirement (12.0 vs 16.4). VisualDx's advantage is update cadence (fortnightly vs every 8 months) and chart position (#23 vs unranked). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. VisualDx sells 11 in-app purchases, starting at $39.99 per month. f asks for nothing beyond the download.

UpkeepUpdate frequency

VisualDx ships an update fortnightly, f every 8 months. The most recent releases landed on October 12, 2026 and October 3, 2026 respectively.

Scorecard4 real differences · 7 level
VisualDx versus f: the parameters behind the verdict, then further details
ParameterVisualDxf
PriceFreeFree
Rating4.4 (186 ratings) — better—
Positive reviews84.3% of reviews—
Number of ratings186 — better—
Update frequencyFortnightly — betterEvery 8 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationSubscription—
Best chart rank#23 — better—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.412.0 — better
Further details — not scored
Size220 MB10 MB
Age rating17+17+
DeveloperLogical ImagesHolonic Systems,Y.K.

Bugs and requests

VisualDx

Reported bugs

6 issues
  • App crashes when using quiz feature
  • CME credit claiming functionality fails
  • Subscription cancellation not processed
  • Renewal charges despite cancellation requests
  • Quiz unable to load properly
Show 1 more
  • Account access issues after payment

Requested features

6 requests
  • Make app free again (previously free)
  • Simplify subscription cancellation in-app
  • Improve quiz functionality for mobile
  • Add quiz feature to desktop version
  • Expand patient information handouts
Show 1 more
  • Better quiz image clarity and context

f

Not enough reviews yet to summarise bugs or requests.

In-app purchases

11 purchases

VisualDx

Subscriptions9
  • Complete (1 Month)1 Month trial$39.991 Month
  • VisualDx Core Monthly7 Days trial$39.991 Month
  • Complete+DermExpert (1 Month)1 Month trial$49.991 Month
Show 6 more
  • VisualDx Elite Monthly7 Days trial$49.991 Month
  • Add DermExpert (1 Year)$99.991 Year
  • Complete (1 Year)1 Month trial$149.991 Year
  • VisualDx Core Annual7 Days trial$249.991 Year
  • VisualDx Elite Annual7 Days trial$299.991 Year
  • Complete+DermExpert (1 Year)1 Month trial$499.991 Year
One-time2
  • Add DermExpert (1 yr)$99.99
  • Complete (1 yr)$399.99
None

f

No in-app purchases

Questions

Is VisualDx free?
VisualDx is free to download, with in-app purchases available.
Is f free?
f is free to download, with no in-app purchases.
Do VisualDx or f have ads?
Neither VisualDx nor f shows ads.
Which is updated more often, VisualDx or f?
VisualDx ships an update fortnightly, and f every 8 months. Most recently, VisualDx was updated on October 12, 2026 and f on October 3, 2026.

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