Comparison

Images Of Disease vs Reservoir Crabs

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

Head to head
About

Images Of Disease

Explore a vast collection of medical images and clinical histories to understand disease processes and their effects on human tissues. This educational tool offers interactive views and detailed descriptions for in-depth learning about various conditions.

Highlights
  • Thousands of disease images
  • Associated clinical histories
  • Interactive hotspotted images
  • Macroscopic and microscopic views
  • Search by disease, organ, or process
  • Virtual audio tours
  • Specimen measurement tool
Features
Read full description

Knowledge of disease processes and their effects are essential for all medical practitioners. The Images of Disease (IOD) app is a unique educational development by staff of the Department of Pathology and Museum of Human Disease in the School of Medical Sciences at the University of New South Wales in Australia. The IOD app is intended to promote learning about disease processes and their effects on human tissues and organs. It provides access to images of a broad range of human diseases, including interactive images of diseased tissue to enhance understanding of the appearances of disease. The IOD app is suitable for students of medicine and medical sciences, as well as medical practitioners, specialist trainees in radiology and pathology, and indeed anyone interested in how disease affects us. The Images of Disease collection consists of a database of thousands of images and associated clinical histories and descriptions, predominantly relating to diseased tissue held in the Museum of Human Disease at the University of New South Wales. Hundreds of diseases are covered, ranging from Abdominal aortic aneurysm to Volvulus of the small bowel. A number of interactive hotspotted images are available to enable in-depth exploration of the features of common diseases such as Myocardial infarction ('heart attack') and Colorectal carcinoma ('bowel cancer'). Images include macroscopic (gross pathology) and microscopic (histopathology) views of diseased tissue, sometimes with associated diagnostic imaging investigations, clinical and autopsy images. Images can be searched by disease name, organ system or pathological process. Virtual audio tours of museum specimens are also available. The free IOD Lite app contains a small selection of those images, while the IOD app contains the complete image collection. When viewing specimens, you can use two fingers on the screen to zoom in and out. You can also swipe up or down on the text field to change its size. You can also tap the ruler icon to measure the actual size of the specimen or features within the specimen by using two fingers to specify the points to measure between. When a specimen name is highlighted in red, this indicates that there are hotspots on the specimen which will display a text description and red outline after tapping on areas of interest. Reviews: "The IOD app is a very well-organised application that allows users to access different pathology specimens thanks to its classification into disease processes, organ system and 'bays'. It is very user friendly with icons to help navigate the app. Finally, it is high detailed and thorough. Each specimen has a succinct clinical, gross and microscopic description of the disease; attention paid to clinico-pathological correlations is second to none. This app will be very useful for medical students." (Final year medical student, UNSW) "The Images of Disease app is a fantastic resource for anyone interested in learning more about pathology (or preparing for exams!). The app has comprehensively catalogued (by disease, organ and process) an extensive collection of pathological specimens complete with clinical cases and images with macroscopic and microscopic descriptions. The app is also exceptionally user-friendly and easy to navigate. Coming complete with virtual tours (including audio tours), the app is not only a great standalone resource accessible from anywhere but an invaluable companion to a visit to the UNSW Pathology Museum!" (Final year medical student, UNSW)

About

Reservoir Crabs

This augmented reality game simulates fiddler crab behavior for educational purposes, allowing students to conduct experiments and practice observational skills without real animals. It provides realistic crab measurements and behaviors for statistical analysis, making it ideal for group work in classrooms.

Highlights
  • Augmented reality crab simulation
  • Realistic crab behavior and measurements
  • Focus on experimental design
  • Supports statistical analysis
  • Ideal for group classroom activities
  • Teaches animal behavior concepts
Features
Read full description

Reservoir Crabs takes all the difficulty out of running an animal experiment by using augmented reality fiddler crabs. With crabs that behave the β€œright” way each time and are immune to stress, students can focus on improving their understanding of experimental design and behavioural observations. Each crab has real measurements and behaviours which allow players to perform statistical analyses. This game replaces animal behaviour practicals and is best used in a class where individuals work in groups. It can also be used to teach students concepts surrounding animal behaviour. The augmented reality tags can be downloaded from the Arludo website here: https://arludo.com/game/reservoir-crabs

Screenshots

Images Of Disease4 screens
Reservoir Crabs4 screens

Verdict

The call

The clearest difference is in-app purchases: Reservoir Crabs at none against Images Of Disease's 1. Reservoir Crabs also leads on iOS requirement (14.0 vs 17.6). Images Of Disease's advantage is review sentiment (100% vs 80%) and update cadence (every 6 weeks vs every 4 months). On price, ads, monetization model and device support there is nothing between them.

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Images Of Disease sells 1 one-off in-app purchase. Reservoir Crabs asks for nothing beyond the download.

UpkeepUpdate frequency

Images Of Disease ships an update every 6 weeks, Reservoir Crabs every 4 months. The most recent releases landed on September 24, 2026 and September 8, 2026 respectively.

Scorecard4 real differences Β· 4 level
Images Of Disease versus Reservoir Crabs: the parameters behind the verdict, then further details
ParameterImages Of DiseaseReservoir Crabs
PriceFreeFree
Positive reviews100.0% of reviews β€” better80.0% of reviews
Update frequencyEvery 6 weeks β€” betterEvery 4 months
AdsNoNo
In-app purchasesYesNo β€” better
MonetizationFreeFree
DevicesiPhone, iPadiPhone, iPad, iPod β€” better
Requires iOS17.614.0 β€” better
Further details β€” not scored
Size332 MB113 MB
Age rating17+4+
DeveloperThe University of New South Walesarludo Pty Ltd

Customer experience

Images Of Disease

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Reservoir Crabs

Written reviews5 reviews
Positive80.0%
Neutral0.0%
Negative20.0%

In-app purchases

1 purchases

Images Of Disease

One-time1
  • Images Of Disease Full Version$2.99
None

Reservoir Crabs

No in-app purchases

Questions

Is Images Of Disease free?
Images Of Disease is free to download, with in-app purchases available.
Is Reservoir Crabs free?
Reservoir Crabs is free to download, with no in-app purchases.
Do Images Of Disease or Reservoir Crabs have ads?
Neither Images Of Disease nor Reservoir Crabs shows ads.
Which is updated more often, Images Of Disease or Reservoir Crabs?
Images Of Disease ships an update every 6 weeks, and Reservoir Crabs every 4 months. Most recently, Images Of Disease was updated on September 24, 2026 and Reservoir Crabs on September 8, 2026.

Other comparisons