Comparison

RBCDetector vs What They See

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

Head to head
About

RBCDetector

Features
Read full description

RBCDetector: Advanced Learning Tool for Red Blood Cell Abnormalities RBCDetector offers a sophisticated and intuitive approach to studying various abnormal types of red blood cells. By simply clicking on an image, users receive expert analysis and results. Key Features: Case Study Downloads: Access a variety of case studies for hands-on practice. Image Summaries: Detailed summaries for each image within a case. Case Diagnoses: Comprehensive case summaries to aid in diagnosis.

About

What They See

This app simulates various vision conditions and color blindness in real-time using your device's camera. Explore how different visual impairments and animal vision affect perception, with educational guides and sharing capabilities.

Highlights
  • Real-time vision condition simulation
  • Colorblindness simulation
  • Animal vision simulation
  • Dyslexia text transformation
  • In-depth educational guides
  • Photo and video capture with simulation
  • Sharing capabilities
Features
Read full description

Ever wondered what the world looks like through someone else's eyes? What They See turns your iPhone camera into a real-time vision simulator. Point it at anything and instantly see how someone with colorblindness, cataracts, myopia, or dyslexia experiences the world. Built with optometrists and educators in mind, but made for anyone who's ever been curious about how other people (and animals) see. VISION CONDITIONS - Myopia and hyperopia with depth-aware blur powered by LiDAR - Glaucoma, macular degeneration (dry and wet), retinitis pigmentosa, and diabetic retinopathy - Cataracts: nuclear, cortical, posterior, and mixed types - Astigmatism with full prescription and axis support, plus keratoconus - Presbyopia with an age slider from 40 to 70 - Floaters, visual snow, and night blindness - Drunk vision that shows how alcohol affects sight - Baby vision from newborn through 52 weeks of development COLORBLINDNESS - Deuteranopia, protanopia, tritanopia, and monochromacy - Adjustable severity so you can see mild to complete color shifts DYSLEXIA - Multiple research-backed simulation types available in 39 languages - Point your camera at any text and see it transform in real time ANIMAL VISION - See the world as a dog, cat, deer, bee, eagle, shark, octopus, fly, spider, owl, snake, mantis shrimp, and more - Ever wonder why your dog can't find the orange ball in green grass? Now you'll know. LEARN MORE WITH DEEP DIVES - Every simulation includes an in-depth educational guide - A deep dive for every simulation, with statistics, interactive charts, diagrams, and world maps - Understand the science behind each condition, not just what it looks like USE YOUR OWN PHOTOS - Import any photo from your library and apply any filter CAPTURE AND SHARE - Take photos and record video with any simulation active - Share what you see with family, students, patients, or friends NO SUBSCRIPTIONS - Buy only the filters you want, or unlock everything once. No subscriptions, ever. WHAT PEOPLE ARE SAYING "I can totally see how this is useful from a patient education perspective. Like showing a parent what their child's vision is like." - Optometrist "This would be extremely helpful! I have parents all the time asking me to describe what their kids see." - Optometrist "The colorblind filters are genius for helping me decide what colors to choose when trying to make things more accessible." - Board game designer "This is amazing! I'll probably be using it every day!" - Optometrist Whether you're an eye care professional explaining a diagnosis, a teacher building empathy in your classroom, a parent understanding your child's vision, or just someone curious about the world, What They See lets you step into someone else's perspective. Download now and see the world through new eyes. What They See is designed for educational purposes and is not intended for medical diagnosis. Vision is deeply personal, and individual experiences may vary. Our simulations are built on published research and developed in consultation with optometrists, special education teachers, dyslexia specialists, and veterinary professionals.

Screenshots

RBCDetector4 screens
What They See4 screens

Verdict

The call

The clearest difference is in-app purchases: RBCDetector at none against What They See's 12. RBCDetector also leads on iOS requirement (13.0 vs 18.0). On price, update cadence, 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. What They See sells 12 one-off in-app purchases. RBCDetector asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on October 10, 2026 and October 25, 2026 respectively.

Scorecard2 real differences · 8 level
RBCDetector versus What They See: the parameters behind the verdict, then further details
ParameterRBCDetectorWhat They See
PriceFreeFree
Rating—4.2 (39 ratings) — better
Positive reviews—37.5% of reviews
Number of ratings—39 — better
Update frequencyFortnightlyFortnightly
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better18.0
Further details — not scored
Size27 MB85 MB
Age rating4+12+
DeveloperKorranat NaruenatthanasetSpecial Glasses LLC

In-app purchases

None

RBCDetector

No in-app purchases

12 purchases

What They See

One-time12
  • Astigmatism$1.99
  • Cataracts$1.99
  • Protanopia$1.99
Show 9 more
  • Tritanopia$1.99
  • Keratoconus$2.99
  • Baby Vision$2.99
  • All Color Blindness$3.99
  • All Dyslexia Simulations$4.99
  • All Animal Vision$7.99
  • All Vision Impairments$12.99
  • Unlock Everything$14.99
  • Unlock Everything$24.99

Questions

Is RBCDetector free?
RBCDetector is free to download, with no in-app purchases.
Is What They See free?
What They See is free to download, with in-app purchases available.
Do RBCDetector or What They See have ads?
Neither RBCDetector nor What They See shows ads.
Which is updated more often, RBCDetector or What They See?
RBCDetector ships an update fortnightly, and What They See fortnightly. Most recently, RBCDetector was updated on October 10, 2026 and What They See on October 25, 2026.

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