Comparison

IMAIOS e vs f

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

Head to head
About

IMAIOS e

This comprehensive human anatomy atlas offers over 26,000 medical images, including various views and illustrations. It allows users to explore anatomical structures with interactive features and multiple language options. A free preview is available before subscribing to the full, continuously updated atlas.

Highlights
  • 26,000+ medical and anatomical images
  • Axial, coronal, sagittal views
  • Radiography and angiography images
  • Dissection pictures and illustrations
  • Interactive labeling and search
  • 12 language options
Currently charting
Read full description

IMAIOS e-Anatomy is an atlas of human anatomy for physicians, radiologists, medical students and radiology technicians. Get a sneak peek at more than 26 000 medical and anatomical images for free before subscribing to our detailed atlas of human anatomy. e-Anatomy is based on the award-winning IMAIOS e-Anatomy online atlas. Carry with you the most complete reference of human anatomy, wherever you go, on your mobile device or tablet. e-Anatomy has over 26 000 images containing series of images in axial, coronal and sagittal views as well as radiography, angiography, dissection pictures, anatomical charts and illustrations. All medical images were carefully labeled, more than 967 000 labels available in 12 languages including the Latin Terminologia Anatomica. (More details on: https://www.imaios.com/en/e-Anatomy) Features: - Scroll through image sets by dragging your finger - Zoom in and out - Tap labels to display anatomical structures - Select anatomical labels by category - Easily locate anatomical structures thanks to the index search - Multiple screen orientations - Switch languages at the touch of a button The subscription also gives you access to e-Anatomy on IMAIOS website. e-Anatomy is an atlas of anatomy continuously being improved: updates and new module are part of the subscription! Additional downloads are required for full use of the application. The medical information on this application is provided as a tool and reference for use by licensed medical professionals, competent healthcare professionals and no others, it does not and should not be construed as any form of medical diagnosis or professional medical advice on any matter. About module activation. IMAIOS e-Anatomy has three methods of activation for our different users: 1) IMAIOS members who have access provided by their university or library, may use their user account to enjoy full access to all modules. However, an internet connection is periodically required to verify their user account. 2) Users who have purchased the modules in previous versions of IMAIOS e-Anatomy can use the ""Restore"" feature to activate all previously purchased content. You will not be charged again and the content available by the time of your purchase is permanently accessible offline. 3) New users are invited to subscribe to e-Anatomy. All modules and features will be active for a limited period of time. Subscriptions will be automatically renewed so that they can enjoy continuous access to e-Anatomy. Additional auto-renewable subscription Information: - Subscription automatically renews unless auto-renew is turned off at least 24 hours prior to the end of the current period. - Subscriptions and auto-renewals may be turned off by going to the user's account settings on the App Store after purchase. - No cancellation of the current subscription is allowed during the active subscription period. The screenshots are part of the full e-Anatomy application with all modules enabled. Privacy Policy and Terms of Use - https://www.imaios.com/en/privacy-policy - https://www.imaios.com/en/conditions-of-access-and-use"

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

IMAIOS e4 screens
f4 screens

Verdict

The call

The clearest difference is in-app purchases: f at none against IMAIOS e's 2. f also leads on iOS requirement (12.0 vs 16.6). IMAIOS e's advantage is update cadence (every 9 days vs every 8 months) and chart position (#99 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. IMAIOS e sells 2 in-app purchases, starting at $21.99 per month. f asks for nothing beyond the download.

UpkeepUpdate frequency

IMAIOS e ships an update every 9 days, f every 8 months. The most recent releases landed on October 24, 2026 and October 3, 2026 respectively.

Scorecard4 real differences · 7 level
IMAIOS e versus f: the parameters behind the verdict, then further details
ParameterIMAIOS ef
PriceFreeFree
Rating4.9 (1.4K ratings) — better—
Positive reviews47.9% of reviews—
Number of ratings1.4K — better—
Update frequencyEvery 9 days — betterEvery 8 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
Best chart rank#99 — better—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.612.0 — better
Further details — not scored
Size2.1 GB10 MB
Age rating17+17+
DeveloperIMAIOSHolonic Systems,Y.K.

In-app purchases

2 purchases

IMAIOS e

Subscriptions2
  • e-Anatomy monthly Subscription$21.991 Month
  • e-Anatomy one year Subscription$132.991 Year
None

f

No in-app purchases

Questions

Is IMAIOS e free?
IMAIOS e is free to download, with in-app purchases available.
Is f free?
f is free to download, with no in-app purchases.
Do IMAIOS e or f have ads?
Neither IMAIOS e nor f shows ads.
Which is updated more often, IMAIOS e or f?
IMAIOS e ships an update every 9 days, and f every 8 months. Most recently, IMAIOS e was updated on October 24, 2026 and f on October 3, 2026.

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