Comparison

Instant Anatomy Flash Cards vs CupCalc

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

Head to head
About

Instant Anatomy Flash Cards

This app offers 560 detailed anatomical diagrams and flashcards for learning and revision. It covers various body parts and systems, with zoomable images and a search function. Content is presented by an experienced medical educator.

Highlights
  • 560 anatomical diagrams
  • Zoomable images
  • Search function
  • Covers head, neck, thorax, abdomen, arm, leg
  • Organized by body systems
  • Presented by medical expert
Features
Read full description

This application provides learners of human anatomy with 560 diagrams or flash cards for learning, revision or as a quick reference guide. They are ideal for medical or nursing students, biological studies students and physiotherapists or doctors looking to refresh their knowledge. The content is split into the following parts of the body: • Head and Neck - 204 diagrams • Thorax - 67 diagrams • Abdomen - 104 diagrams • Arm - 112 diagrams • Leg - 81 diagrams Each section is then split into the following: • Areas/Organs • Vessels • Nerves • Joints • Muscles • Surface Anatomy • Vertebral Levels The diagrams can all be zoomed in using the pinch gesture and can be viewed in landscape or portrait. There is also a search function allowing you to find any diagram using a keyword. The material is presented by Dr Robert Whitaker who spent his clinical career as a paediatric urological surgeon. Having retired from surgery, Dr Whitaker now teaches clinically applied topographical anatomy to first-year medical students at the University of Cambridge, in the UK. He also teaches clinically applied anatomy to surgical, radiological and other speciality trainees and is a former examiner for the MRCS at the English and Edinburgh Colleges of Surgeons. Dr Whitaker is also the co-author of the top selling book Instant Anatomy. See our website for more information - www.instantanatomy.net

About

CupCalc

This medical reference calculator assists orthopaedic surgeons and trainees in total hip arthroplasty by applying published mathematical formulas to compute acetabular cup targets. It provides detailed calculations based on pelvic incidence, sacral slope, and femoral mobility, with all data traceable to peer-reviewed literature.

Highlights
  • Acetabular cup target computation
  • Pelvic incidence and sacral slope analysis
  • Femoral mobility classification
  • Functional anteversion and inclination targets
  • Safe zone plot with CSI thresholds
  • Exportable PDF planning summary
Features
Read full description

CupCalc — Spinopelvic Planning Reference CupCalc is an educational reference calculator for orthopaedic surgeons and trainees performing total hip arthroplasty. It applies published mathematical formulas to compute mobility-specific acetabular cup targets based on pelvic incidence, sacral slope, and femoral mobility classification. The calculations in CupCalc are derived entirely from peer-reviewed literature. No proprietary algorithms. No black-box outputs. Every number traces back to a published source — accessible within the app. What CupCalc calculates: — Functional anteversion and inclination targets referenced to either the anterior pelvic plane or standing AP radiograph — Standing and sitting sacral slope with delta sacral slope mobility classification — Pelvic femoral angle (standing and sitting) — Anterior pelvic tilt correction for anatomic landmark guidance — Safe zone plot with CSI thresholds — Exportable PDF planning summary with full reference list Built on the published work of: Bodner, Dorr, Heckmann, Stefl, Kanawade, Wan, and colleagues whose research established the framework for functional spinopelvic planning in THA. For Fellows: CupCalc is free for 12 months for active arthroplasty fellows through the Fellow Access program. Apply within the app — program verification is handled automatically via e-mail. Privacy: CupCalc does not collect, store, or transmit protected health information. Do not enter patient-identifying information into any field. Anonymous case labels only. CupCalc is an educational reference tool intended for use by qualified medical professionals. It performs published mathematical formulas and presents results for independent professional evaluation. It does not provide surgical recommendations, replace clinical judgment, or constitute medical advice. Not a medical device. Not cleared by the FDA. All clinical decisions remain the sole responsibility of the treating surgeon. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Instant Anatomy Flash Cards4 screens
CupCalc4 screens

Verdict

The call

The clearest difference is price: CupCalc at Free against Instant Anatomy Flash Cards's $4.99. CupCalc also leads on update cadence (fortnightly vs every 2 months). Instant Anatomy Flash Cards's advantage is in-app purchases (none vs 2) and iOS requirement (12.0 vs 15.1). On rating, ratings volume, 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

CupCalc is free to download; Instant Anatomy Flash Cards costs $4.99 up front. CupCalc sells 2 in-app purchases, starting at $12.99 per year. Instant Anatomy Flash Cards asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Instant Anatomy Flash Cards against 5.0 for CupCalc. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

UpkeepUpdate frequency

Instant Anatomy Flash Cards ships an update every 2 months, CupCalc fortnightly. The most recent releases landed on November 1, 2026 and October 28, 2026 respectively.

Scorecard5 real differences · 5 level
Instant Anatomy Flash Cards versus CupCalc: the parameters behind the verdict, then further details
ParameterInstant Anatomy Flash CardsCupCalc
Price$4.99Free — better
Rating5.0 (1 ratings)5.0 (1 ratings)
Positive reviews79.2% of reviews—
Number of ratings11
Update frequencyEvery 2 monthsFortnightly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better15.1
Further details — not scored
Size244 MB42 MB
Age rating4+4+
DeveloperAndrew WhitakerZekko LLC

In-app purchases

None

Instant Anatomy Flash Cards

No in-app purchases

2 purchases

CupCalc

Subscriptions2
  • CupCalc Express1 Year trial$12.991 Year
  • CupCalc Pro1 Year trial$19.991 Year

Questions

Is Instant Anatomy Flash Cards free?
Instant Anatomy Flash Cards costs $4.99, with no in-app purchases.
Is CupCalc free?
CupCalc is free to download, with in-app purchases available.
Which has better reviews, Instant Anatomy Flash Cards or CupCalc?
Instant Anatomy Flash Cards and CupCalc are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.
Do Instant Anatomy Flash Cards or CupCalc have ads?
Neither Instant Anatomy Flash Cards nor CupCalc shows ads.
Which is updated more often, Instant Anatomy Flash Cards or CupCalc?
Instant Anatomy Flash Cards ships an update every 2 months, and CupCalc fortnightly. Most recently, Instant Anatomy Flash Cards was updated on November 1, 2026 and CupCalc on October 28, 2026.

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