eyeSnellen vs Control LITE
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
eyeSnellen
This app provides a visual acuity test using a Snellen chart on your iPad. It features auto-calibration for accurate results and can be controlled remotely with an iPhone or iPod touch for enhanced functionality. The app is designed for precise vision testing.
- Snellen chart visual acuity test
- Auto-calibration for accuracy
- iPhone/iPod remote control
- Adjustable screen timeout
- Tested on various iPad and iPhone models
Read full descriptionHide full description
The MOST accurate visual acuity test on the iPad (or iPad mini). A built-in auto-calibration function on the iPhone/iPod will adjust the size of the Snellen Chart (and brightness) to produce accurate and reproducible results. The iPad chart is fully functional, but the best way to use the app is with the iPhone/iPod remote (this requires an in-app purchase for full functionality). An auto-dim function is set to time the screen out at 2 minute to prevent the iPad battery from being depleted (this is now user adjustable). Tested with all iPad versions (maximal chart distance 7.4m/24ft), and with the iPad mini (maximal chart distance 6m/20ft). Tested with all current iPods with a built-in camera and iPhones except the iPhone 3. The app has been tested by Ophthalmologists, feedback is encouraged.
Control LITE
Read full descriptionHide full description
Control all the features of the Chart2020 LITE app from your iPhone You can mask, randomize, increase decrease VA sizes from your iPhone, set testing distance, display notations (feet, meters, logMAR and decimal) Control the size of the astigmatism target and the duochrome target for balancing Any function you can control on the iPad app you can control from this app You can use this app on another iPad, iPad mini or even iPad Pro.
Screenshots
Verdict
The clearest difference is in-app purchases: Control LITE at none against eyeSnellen's 1. eyeSnellen's advantage is update cadence (monthly vs every 87 months) and iOS requirement (8.1 vs 13.0). On price, 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
Both are free to download. eyeSnellen sells 1 one-off in-app purchase. Control LITE asks for nothing beyond the download.
eyeSnellen ships an update monthly, Control LITE every 87 months. The most recent releases landed on October 16, 2026 and October 29, 2026 respectively.
| Parameter | eyeSnellen | Control LITE |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (4 ratings) — better | — |
| Positive reviews | 53.8% of reviews | — |
| Number of ratings | 4 — better | — |
| Update frequency | Monthly — better | Every 87 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 8.1 — better | 13.0 |
| Further details — not scored | ||
| Size | 16 MB | 2 MB |
| Age rating | 12+ | 4+ |
| Developer | Steve Colley | Shemesh Health Solutions PTY Ltd |
In-app purchases
eyeSnellen
- eyeSnellen Pro$9.99
Control LITE
No in-app purchases
Questions
Is eyeSnellen free?
Is Control LITE free?
Do eyeSnellen or Control LITE have ads?
Which is updated more often, eyeSnellen or Control LITE?
Other comparisons
