Comparison

Color Vision Aid vs Ophthalmology Toolbox

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

Head to head
About

Color Vision Aid

Features
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ColorVision Aid helps people with color vision deficiencies see the world more accurately. Using advanced GPU-accelerated daltonization technology, the app applies real-time color correction through your device camera. KEY FEATURES: • Live Camera Correction — See corrected colors in real-time through your camera with GPU shader processing • Gallery Processing — Apply color correction to saved photos from your library • Comprehensive Vision Tests — Ishihara plate test, Farnsworth D-15, Cambridge Colour Test, contrast sensitivity, hue discrimination, visual acuity (Snellen/LogMAR), near vision, and Pelli-Robson • Personalized Calibration — Fine-tune correction intensity for your specific color vision type (Protanopia, Deuteranopia, Tritanopia) • Screen Calibration — Calibrate your display for accurate vision test results • Dark Mode Support — System, Light, and Dark theme options • 11 Languages — English, Hindi, Punjabi, French, Spanish, Chinese, Arabic, Portuguese, Japanese, German, Korean SUPPORTED CONDITIONS: • Protanopia (red-weak/blind) • Deuteranopia (green-weak/blind) • Tritanopia (blue-weak/blind) All image processing happens entirely on your device — your photos and camera feed are never uploaded or shared. Built with accessibility in mind, featuring VoiceOver support and voice-controlled testing. DISCLAIMER: This app is for informational and accessibility purposes only and is not a substitute for professional eye examination or medical diagnosis. Consult a qualified eye care professional for clinical evaluation of any vision concerns.

About

Ophthalmology Toolbox

A comprehensive medical reference and screening tool for eye care professionals. It offers a suite of clinical utilities including medication guides, vision conversion tables, fundus photography, and color vision testing, designed for efficient use in clinical settings.

Highlights
  • Eye Drops Guide
  • VA Conversion Table
  • Retina Viewer
  • Nine-Gaze Camera
  • Ishihara Test
  • IPD Measurement
  • Amsler Grid
  • Cobalt Blue Screen
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A pocket toolbox for ophthalmology. Thirteen clinical tools — handbooks, screening tests, calculators, and cameras — in one native iOS app. Built for ophthalmologists, optometrists, opticians, orthoptists, residents, and medical students. Designed for the bedside, the clinic, and the corridor. Every tool is one tap away from the Home Screen. POCKET HANDBOOKS • Eye Exam Guide The eye examination in 13 step-by-step chapters, from history taking to the slit lamp, gonioscopy, and the dilated fundus. Normal values, how to record findings, common pitfalls, 85 photos and diagrams, and linked references. • Eye Drops Guide A searchable reference to more than 100 eye medications in seven categories, from antibiotics and glaucoma drops to allergy, dilation, and dry eye. Doses, forms, brands, safety, and interactions, checked against US, UK, and Saudi labels. BEDSIDE TOOLS • VA Conversion Table Meter, Feet, and decimal acuities side-by-side. Convert at a glance. • Retina Viewer Smartphone fundus photography using a 20D lens. Live camera with smooth zoom, capture photos or video, save to Photos. • Nine-Gaze Camera Guide the patient through the nine cardinal gaze positions. The app auto-stitches each frame into a single 3×3 motility montage, ready to save. • Ishihara Test 24-plate color vision screening with a 1–15 scoring table, protan/deutan classification, and linked validation studies for digital screening. • IPD Measurement Measure interpupillary distance via the TrueDepth front camera. • Amsler Grid On-screen central vision testing for macular monitoring. • Cobalt Blue Screen Blue illumination for fluorescein when a cobalt blue light source isn't available — a workaround for low-resource and emergency settings. CLINICAL CALCULATORS Live results as you dial in values, with the formulas and published sources behind every answer. • Age to Bifocal Add Set the patient's age for a tentative near add at 40 cm, with the full age-band table alongside. • Rx Toolkit Transpose between plus and minus cylinder, find the spherical equivalent, and vertex-compensate between spectacle and contact lens powers, rounded to steps you can order. • Prism Toolkit Prentice's rule for both lenses at once: vertical imbalance at the reading level, PD-error prism graded against ANSI Z80.1, and whether decentration can supply a prism. • AC/A Ratio Calculated and gradient methods side by side, with the working shown. See which binocular vision pattern the findings fit, and predict how a near add will shift the near phoria. DESIGNED FOR CLINICIANS Short workflows, help sheets that spell out technique and limitations, and no marketing fluff. Home Screen quick actions open VA Conversion, Search Medications, and Cobalt Blue Screen in one long-press. A NOTE ON SCOPE Ophthalmology Toolbox is a clinical reference and screening companion. It is not a substitute for slit-lamp examination, formal perimetry, or standard ophthalmic equipment when those are available. The Cobalt Blue Screen and digital Ishihara test are best treated as bedside workarounds, with printed plates or proper equipment used to confirm significant findings. The Eye Exam Guide supports supervised training, and the calculators support clinical judgment; neither replaces them. JUST THE BEGINNING The toolbox is still growing, with more tools and handbooks on the way. If something's missing from your workflow, send a note: the next update might add it. MEDICAL DISCLAIMER: This app is intended for educational, informational, and clinical reference purposes only. It does not provide medical diagnosis or treatment and is not a substitute for professional medical advice, clinical judgment, or consultation with a qualified healthcare professional. Users should seek a doctor’s advice before making any medical decisions or acting on information provided by this app. Designed and developed by a clinician, for clinicians.

Screenshots

Color Vision Aid4 screens
Ophthalmology Toolbox4 screens

Verdict

The call

The clearest difference is update cadence: Color Vision Aid at daily against Ophthalmology Toolbox's every 2 months. Color Vision Aid also leads on iOS requirement (16.0 vs 26.0). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Color Vision Aid ships an update daily, Ophthalmology Toolbox every 2 months. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

Scorecard2 real differences · 8 level
Color Vision Aid versus Ophthalmology Toolbox: the parameters behind the verdict, then further details
ParameterColor Vision AidOphthalmology Toolbox
PriceFreeFree
Rating—4.2 (5 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—5 — better
Update frequencyDaily — betterEvery 2 months
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPad — betteriPhone
Requires iOS16.0 — better26.0
Further details — not scored
Size28 MB66 MB
Age rating12+17+
DeveloperJagdeep SinghTaha Khayat

In-app purchases

None

Color Vision Aid

No in-app purchases

None

Ophthalmology Toolbox

No in-app purchases

Questions

Is Color Vision Aid free?
Color Vision Aid is free to download, with no in-app purchases.
Is Ophthalmology Toolbox free?
Ophthalmology Toolbox is free to download, with no in-app purchases.
Do Color Vision Aid or Ophthalmology Toolbox have ads?
Neither Color Vision Aid nor Ophthalmology Toolbox shows ads.
Which is updated more often, Color Vision Aid or Ophthalmology Toolbox?
Color Vision Aid ships an update daily, and Ophthalmology Toolbox every 2 months. Most recently, Color Vision Aid was updated on October 25, 2026 and Ophthalmology Toolbox on October 24, 2026.

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