---
title: "Kay iSight Test Professional - Reviews, Revenue and Downloads in United Kingdom | Apple App Store"
description: "The iSight Test Professional app lets you measure and save near and distant visual acuity in children as young as 18 months through to adults using Kay Picture optotypes and Sloan letters.  The app of"
---

# Kay iSight Test Professional — United Kingdom
> Perfect vision testing app

![Kay iSight Test Professional App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/83/84/c8/8384c8ce-1db7-e4a6-06f3-5db964fb590a/AppIcon-0-0-1x_U007emarketing-0-6-0-85-220.png/434x0w.png)

**Developer:** [Kay Pictures](https://apptail.io/developer/kay-pictures-wOQb) (United Kingdom)
**Category:** Medical
**Rating:** 4.5/5 (82 ratings)
**Price:** Free
**Bundle ID:** uk.co.kaypictures.iSightProfessional
**Store:** Apple App Store
**Country:** United Kingdom
**Version:** 7.1 (released 2026-02-02)
**Original Release:** 2016-12-02
**Languages:** English

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/gb/app/app/id1144082577)
**AppTail Page:** [https://apptail.io/app/kay-isight-test-professional-OPjd/united-kingdom](https://apptail.io/app/kay-isight-test-professional-OPjd/united-kingdom)

## Kay iSight Test Professional Description
The iSight Test Professional app lets you measure and save near and distant visual acuity in children as young as 18 months through to adults using Kay Picture optotypes and Sloan letters.

The app offers a choice of single and crowded presentations and test distances and is simple and intuitive to use, making your testing quick and easy. Test results are displayed in your chosen format and can be saved and exported to a spreadsheet

On the iPad is an option to test vision on any remote device or external screen.

In addition to measuring visual acuity with 6 or 9 Sloan letters, the Kay Picture optotypes* make testing young children and others with a learning disability easy. Plus the app provides unique reading texts in a child-friendly front and fixation targets

*The Kay Picture Test is the only fully-validated picture vision test with accurate, recognisable pictures and evidence-basedcrowding. This app is registered as a medical device.

Features:

⁃ Measures visual acuity at various set testing distances up to 6 metres ( 20 feet) on iPad, 3 metres (10 feet) on iPhone) or any custom distance within that range.

⁃ Choice of letters or pictures for testing a range of ages and abilities

⁃ Displays LogMAR notation, plus metric or imperial Snellen, or Decimal

⁃ Records and saves visual acuity results for each eye to a log

⁃ Export or delete saved log of any test results

⁃ Offers various single, crowded and chart presentations

⁃ Six or nine Sloan letters can be standard or optimally crowded

⁃ Reading text and words in twelve sizes from N48 to N5

⁃ Sentences of exactly 50 words to facilitate reading speed testing.

⁃ Lock screen option on reading pages.

⁃ Easy to increase and decrease the size displayed

⁃ Simple to refresh the optotypes or text on screen

⁃ Provides coloured, animated fixation targets to maintain interest and accommodation.

⁃ Can be shared (iPad only) to another device for remote vision testing

⁃ Can be set up on an external display and operated via the iPad


Kay iSight Test Professional is free to download and to use its three-line distance letter test.

To obtain full access to all visual acuity tests, remote testing (iPad only), reading tests and fixation targets you need to purchase an auto-renewing subscription on a monthly or yearly basis.

A 30 day free trial period is available to new users at the start of your subscription to fully test the app before payment is taken.

Price may vary by location. Subscriptions will be charged to your credit card through your iTunes account. Your subscription will automatically renew unless cancelled at least 24 hours before the end of the current period. You will not be able to cancel asubscription during the active period.

You can manage your subscriptions in your Account Settings after purchase.

Our Terms of Use: 
Our Privacy Policy: 

## Kay iSight Test Professional Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/67/dd/f0/67ddf057-7ed2-8010-18c6-856b434e4c8b/iPhone12Max_01_LetterTests.png/1284x2778.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/b2/a1/54/b2a1547e-5b06-61ea-804e-ffdc3aa9df95/iPhone12Max_02_8LetterTest.png/1284x2778.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/7f/d4/f3/7fd4f37a-bc44-e528-97b4-9c59e119aa61/iPhone12Max_03_PictureTest.png/1284x2778.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/b4/2e/81/b42e8176-227d-dcda-0f65-492376fe8756/iPhone12Max_04_TestResults.png/1284x2778.png)
- [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/52/d2/6f/52d26fb3-f1a1-f58f-4a45-f7b0531d185d/iPhone12Max_05_ReadingText.png/1284x2778.png)
- [Screenshot 6](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/11/fa/75/11fa7522-6ff3-1b9d-f9e6-045b8ad1401c/iPhone12Max_06_SentenceText.png/1284x2778.png)
- [Screenshot 7](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/cb/42/6b/cb426bef-dc4e-f383-af20-4d6ef82f5fdb/iPhone12Max_07_FixationTargets.png/1284x2778.png)
- [Screenshot 8](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/b4/6b/cf/b46bcf4f-36f3-0437-3ed2-ffc9ca11622f/iPhone12Max_08_FixationAnimation.png/1284x2778.png)

## Kay iSight Test Professional Rating Breakdown in United Kingdom
- 5 stars: 63 (77%)
- 4 stars: 11 (13%)
- 3 stars: 1 (1%)
- 2 stars: 0 (0%)
- 1 stars: 7 (9%)

## Kay iSight Test Professional Reviews in United Kingdom

### *---- "Doesn’t work"
iOS 26.2  app is stuck on ‘loading’ after making initial selections.

Tried removing and reinstalling, turning iPad off for a minute and repeating.
-- Crowip131, 2026-01-20

### ***** "Excellent and flexible vision app"
I have used iSight for a long time and find to really useful in many settings. Most recently I have used it as part of screening 4 year olds . Children love it and the added fixation targets are helpful for maintaining fixation. I recommend all the students I teach and fellow professionals to use it . It’s always in my pocket too ! Great for assessing near and distance vision
-- Docnorth, 2025-12-08

### ***** "Easy to use and very accessible."
A great app which has made functional vision assessments in schools and settings much easier to administer. The iPad immediately grabs most children’s attention and being able to save the results is a godsend! Also great tech support from Kay Pictures online.
-- QTVIWilts, 2024-10-17

### ***** "Accurate and easy to use"
Cost effective, portable and easy to use app for all ages. Very pleased
-- SheCathe, 2024-10-16

### ***** "Great app with great support"
This app has been a wonderful purchase for our Sensory Service. Our teachers have found it easy to use and pupil engagement has increased as it is on the iPad. The team at Kay Pictures have been excellent in helping when needed too. A must have for QTVIs
-- James B - Newham, 2024-02-21

### ***** "Even better with new features"
This app was always great. The new remote features make it even more useful
-- sebbyg69, 2022-08-23

### ***** "Dr L"
Best acuity app out there. Lean on it heavily, and have done for years. Great design, reassuring attention to regulatory aspects and great optotypes. This app continues to improve with each release
-- Idoc80, 2021-03-13

### ***** "Excellent tool for paediatric tests of under 5yrs"
I love this app.
I used the older version which isn’t compatible with the new iOS (annoyingly)
However, I do like the new layout and the crowded letter feature too which is better for identifying strabismic amblyopia.
I look forward to further developments like linear Kay Pictures.
I especially love being able to advise my patients to play the free orient version of Say & Match app so they can practice the images in advance of their test with me.
-Michael O’Kane
-- michaelcokane, 2018-03-06

### ***** "Orthoptoid"
Testing on iPad or iPhone way better than what went before. Log function so handy! Perfect for school screening
-- Vickster010, 2017-12-24

### ***** "Mr S"
Finally, a well designed CE marked app for children’s vision!
-- Stuartieboy74, 2017-12-24

[View all Kay iSight Test Professional reviews and detailed analytics on AppTail](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=reviews)

## Kay iSight Test Professional In-App Purchases
| Item | Price |
|------|-------|
| Month | £6.99 |
| Year | £43.99 |

## Kay iSight Test Professional Store Rankings
| Chart | Country | Category | Rank |
|-------|---------|----------|------|
| Top Grossing | Denmark | Medical | #13 |
| Top Grossing | New Zealand | Medical | #45 |
| Top Grossing | Portugal | Medical | #72 |
| Top Grossing | Ireland | Medical | #94 |

## Kay iSight Test Professional Discovered Keywords
- color vision test
- the medical letter

## Apps Similar to Kay iSight Test Professional
- [LocumBell](https://apptail.io/app/locumbell-Zwq/united-kingdom)
- [Buku Medicine](https://apptail.io/app/buku-medicine-fPQ/united-kingdom)
- [Eye Workout: Recovery Exercise](https://apptail.io/app/eye-workout-recovery-exercise-abS/united-kingdom)
- [Vision test and Eye exercises](https://apptail.io/app/vision-test-and-eye-exercises-cbS/united-kingdom)
- [Cinapsis](https://apptail.io/app/cinapsis-Odhb/united-kingdom)
- [College of Optometrists](https://apptail.io/app/college-of-optometrists-ivdk/united-kingdom)
- [Ophthalmology & Optometry](https://apptail.io/app/ophthalmology-optometry-jMmo/united-kingdom)
- [Eye Test: Check Your Vision](https://apptail.io/app/eye-test-check-your-vision-jrVt/united-kingdom)
- [Eye Chart HD](https://apptail.io/app/eye-chart-hd-CKnu/united-kingdom)
- [Eye Chart Pro](https://apptail.io/app/eye-chart-pro-apTu/united-kingdom)

## Kay iSight Test Professional Available In
- [United Kingdom](https://apptail.io/app/kay-isight-test-professional-OPjd/united-kingdom)
- [United States](https://apptail.io/app/kay-isight-test-professional-OPjd/united-states)
- [Canada](https://apptail.io/app/kay-isight-test-professional-OPjd/canada)
- [Australia](https://apptail.io/app/kay-isight-test-professional-OPjd/australia)
- [Ireland](https://apptail.io/app/kay-isight-test-professional-OPjd/ireland)
- [South Africa](https://apptail.io/app/kay-isight-test-professional-OPjd/south-africa)
- [Greece](https://apptail.io/app/kay-isight-test-professional-OPjd/greece)
- [Mexico](https://apptail.io/app/kay-isight-test-professional-OPjd/mexico)
- [Denmark](https://apptail.io/app/kay-isight-test-professional-OPjd/denmark)
- [Indonesia](https://apptail.io/app/kay-isight-test-professional-OPjd/indonesia)
- [Netherlands](https://apptail.io/app/kay-isight-test-professional-OPjd/netherlands)
- [Vietnam](https://apptail.io/app/kay-isight-test-professional-OPjd/vietnam)
- [Kuwait](https://apptail.io/app/kay-isight-test-professional-OPjd/kuwait)
- [New Zealand](https://apptail.io/app/kay-isight-test-professional-OPjd/new-zealand)
- [Czechia](https://apptail.io/app/kay-isight-test-professional-OPjd/czechia)
- [Germany](https://apptail.io/app/kay-isight-test-professional-OPjd/germany)
- [Dominican Republic](https://apptail.io/app/kay-isight-test-professional-OPjd/dominican-republic)
- [Algeria](https://apptail.io/app/kay-isight-test-professional-OPjd/algeria)
- [Ecuador](https://apptail.io/app/kay-isight-test-professional-OPjd/ecuador)
- [Estonia](https://apptail.io/app/kay-isight-test-professional-OPjd/estonia)
- [Egypt](https://apptail.io/app/kay-isight-test-professional-OPjd/egypt)
- [Spain](https://apptail.io/app/kay-isight-test-professional-OPjd/spain)
- [Finland](https://apptail.io/app/kay-isight-test-professional-OPjd/finland)
- [France](https://apptail.io/app/kay-isight-test-professional-OPjd/france)
- [Hong Kong SAR China](https://apptail.io/app/kay-isight-test-professional-OPjd/hong-kong)
- [Croatia](https://apptail.io/app/kay-isight-test-professional-OPjd/croatia)
- [Hungary](https://apptail.io/app/kay-isight-test-professional-OPjd/hungary)
- [Israel](https://apptail.io/app/kay-isight-test-professional-OPjd/israel)
- [India](https://apptail.io/app/kay-isight-test-professional-OPjd/india)
- [Italy](https://apptail.io/app/kay-isight-test-professional-OPjd/italy)
- [Japan](https://apptail.io/app/kay-isight-test-professional-OPjd/japan)
- [South Korea](https://apptail.io/app/kay-isight-test-professional-OPjd/south-korea)
- [Kazakhstan](https://apptail.io/app/kay-isight-test-professional-OPjd/kazakhstan)
- [Lebanon](https://apptail.io/app/kay-isight-test-professional-OPjd/lebanon)
- [Lithuania](https://apptail.io/app/kay-isight-test-professional-OPjd/lithuania)
- [Luxembourg](https://apptail.io/app/kay-isight-test-professional-OPjd/luxembourg)
- [United Arab Emirates](https://apptail.io/app/kay-isight-test-professional-OPjd/united-arab-emirates)
- [Malta](https://apptail.io/app/kay-isight-test-professional-OPjd/malta)
- [Latvia](https://apptail.io/app/kay-isight-test-professional-OPjd/latvia)
- [Argentina](https://apptail.io/app/kay-isight-test-professional-OPjd/argentina)
- [Austria](https://apptail.io/app/kay-isight-test-professional-OPjd/austria)
- [Azerbaijan](https://apptail.io/app/kay-isight-test-professional-OPjd/azerbaijan)
- [Barbados](https://apptail.io/app/kay-isight-test-professional-OPjd/barbados)
- [Belgium](https://apptail.io/app/kay-isight-test-professional-OPjd/belgium)
- [Brazil](https://apptail.io/app/kay-isight-test-professional-OPjd/brazil)
- [Belarus](https://apptail.io/app/kay-isight-test-professional-OPjd/belarus)
- [Belize](https://apptail.io/app/kay-isight-test-professional-OPjd/belize)
- [Switzerland](https://apptail.io/app/kay-isight-test-professional-OPjd/switzerland)
- [Chile](https://apptail.io/app/kay-isight-test-professional-OPjd/chile)
- [China](https://apptail.io/app/kay-isight-test-professional-OPjd/china)
- [Colombia](https://apptail.io/app/kay-isight-test-professional-OPjd/colombia)
- [Cyprus](https://apptail.io/app/kay-isight-test-professional-OPjd/cyprus)
- [Saudi Arabia](https://apptail.io/app/kay-isight-test-professional-OPjd/saudi-arabia)
- [Sweden](https://apptail.io/app/kay-isight-test-professional-OPjd/sweden)
- [Singapore](https://apptail.io/app/kay-isight-test-professional-OPjd/singapore)
- [Slovenia](https://apptail.io/app/kay-isight-test-professional-OPjd/slovenia)
- [Thailand](https://apptail.io/app/kay-isight-test-professional-OPjd/thailand)
- [Tunisia](https://apptail.io/app/kay-isight-test-professional-OPjd/tunisia)
- [Türkiye](https://apptail.io/app/kay-isight-test-professional-OPjd/turkey)
- [Taiwan](https://apptail.io/app/kay-isight-test-professional-OPjd/taiwan)
- [Ukraine](https://apptail.io/app/kay-isight-test-professional-OPjd/ukraine)
- [Malaysia](https://apptail.io/app/kay-isight-test-professional-OPjd/malaysia)
- [Nigeria](https://apptail.io/app/kay-isight-test-professional-OPjd/nigeria)
- [Norway](https://apptail.io/app/kay-isight-test-professional-OPjd/norway)
- [Nepal](https://apptail.io/app/kay-isight-test-professional-OPjd/nepal)
- [Peru](https://apptail.io/app/kay-isight-test-professional-OPjd/peru)
- [Philippines](https://apptail.io/app/kay-isight-test-professional-OPjd/philippines)
- [Pakistan](https://apptail.io/app/kay-isight-test-professional-OPjd/pakistan)
- [Poland](https://apptail.io/app/kay-isight-test-professional-OPjd/poland)
- [Portugal](https://apptail.io/app/kay-isight-test-professional-OPjd/portugal)
- [Romania](https://apptail.io/app/kay-isight-test-professional-OPjd/romania)
- [Russia](https://apptail.io/app/kay-isight-test-professional-OPjd/russia)
- [Mauritius](https://apptail.io/app/kay-isight-test-professional-OPjd/mauritius)
- [Sri Lanka](https://apptail.io/app/kay-isight-test-professional-OPjd/sri-lanka)
- [Oman](https://apptail.io/app/kay-isight-test-professional-OPjd/oman)
- [Namibia](https://apptail.io/app/kay-isight-test-professional-OPjd/namibia)
- [Angola](https://apptail.io/app/kay-isight-test-professional-OPjd/angola)
- [Jamaica](https://apptail.io/app/kay-isight-test-professional-OPjd/jamaica)
- [Botswana](https://apptail.io/app/kay-isight-test-professional-OPjd/botswana)
- [Brunei](https://apptail.io/app/kay-isight-test-professional-OPjd/brunei)
- [Honduras](https://apptail.io/app/kay-isight-test-professional-OPjd/honduras)

---

## About AppTail

[AppTail](https://apptail.io) is a mobile app intelligence platform providing app analytics, ASO (App Store Optimization) tools, keyword tracking, competitor analysis, revenue estimates, and review monitoring for iOS App Store apps. Track your app's performance, discover ranking keywords, monitor competitors, and analyze market trends.

- [Search Apps](https://apptail.io)
- [Top Charts](https://apptail.io/top-iphone-apps)
- [Sign Up for Full Access](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=footer)

*Data provided by [AppTail](https://apptail.io) - Mobile App Intelligence Platform*