Eye Chart Pro vs Control LITE
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Eye Chart Pro
This app provides a randomized visual acuity exam, functioning like a projector-based eye chart. It's useful for quick vision screenings, house visits, or when patients may have memorized standard charts. The app offers both Snellen and Tumbling E charts with randomization options.
- Randomizable Snellen Chart
- Randomizable Tumbling E Chart
- Randomize entire chart or line by line
- Smooth interface with animations
- Basic remote control
- Metric / Feet functionality
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**A Top Downloaded Medical App - Over 500,000 Installs** Eye Chart Pro is a clinically-reviewed, randomizable visual acuity exam. It’s remote-controlled, pleasant for patients and providers, and FREE. Similar chart projector functionality usually costs over $1000. Check out the last screenshot to see more information on the clinical reviews in peer-reviewed publications and their conclusions. Useful for: - Triaging - House visits - Patients who have memorized the office chart Features: - Randomizable Snellen Chart - Randomizable Tumbling E Chart - Randomize the whole chart or one line at a time - Smooth interface with animations - Basic remote - Metric / Feet functionality Description: Eye Chart Pro is a generator for randomized Snellen and Tumbling E charts to offer a rough but useful screen of visual acuity. Simply press a button to randomize the entire eye chart, or touch an individual line of the chart to randomize that line. Tap another button to toggle between Snellen and Tumbling E charts. Eye care professionals around the world use Snellen Eye Charts to measure visual acuity. However, patients often memorize the classic Snellen chart, leading to less accurate vision measurements. Enter Eye Chart Pro! Though this unique, notebook sized randomizable eye chart should not be used as a primary visual acuity measuring tool, it can provide a handy rough vision screen when a chart is not available, or it can be used to complement static, wall-based Snellen charts. Eye Chart Pro was made with the best of intentions, and we hope to continue improving it. Your feedback is appreciated! Here is a summary of clinical evaluations we have found: ETDRS Chart on Eye Chart Pro on iPad: “Validation of the visual acuity iPad app Eye Chart Pro compared to the standard Early Treatment Diabetic Retinopathy Study chart in a low-vision population” Journal of Telemedicine and Telecare. Conclusion (summary quote): “The ETDRS chart function on the Eye Chart Pro application can reliably measure VA across a range, from normally sighted patients to those with low vision.” Sloan Chart on Eye Chart Pro on iPad: “The validity of visual acuity assessment using mobile technology devices in the primary care setting.” Australian Family Physician. Conclusion (summary quote): “The high level of agreement of visual acuity results between the Snellen wall chart and both mobile technology devices suggests that clinicians can use this technology with confidence in the primary care setting.” Tumbling E Chart on Eye Chart Pro on iPad: “A Pilot Trial of the Ipad Tablet Computer as a Portable Device for Visual Acuity Testing” Journal of Telemedicine and Telecare. Conclusion (summary quote): “Bland-Altman analysis revealed a mean difference (bias) of 0.02 logMAR units between the VA results from the iPad chart and the light-box chart, with 95% limits of agreement of -0.14 to 0.19.” We are not responsible for the above studies, so please check out the papers above if you have further questions.
Control LITE
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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 Eye Chart Pro's 11. Control LITE also leads on device support (3 vs 1). Eye Chart Pro's advantage is update cadence (every 3 months vs every 87 months). On price, ads and iOS requirement 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. Eye Chart Pro sells 11 one-off in-app purchases. Control LITE asks for nothing beyond the download.
Eye Chart Pro ships an update every 3 months, Control LITE every 87 months. The most recent releases landed on July 27, 2026 and September 15, 2026 respectively.
| Parameter | Eye Chart Pro | Control LITE |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (2 ratings) — better | — |
| Positive reviews | 53.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 3 months — better | Every 87 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 12.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 29 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Manu Lakkur | Shemesh Health Solutions PTY Ltd |
In-app purchases
Eye Chart Pro
- Amsler Grid in Portrait and Landscape.$9.99
- Premium Home Edition of Eye Chart Pro$19.99
- HOTV Chart$19.99
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- Sloan Letters Chart$19.99
- ETDRS Chart 1$39.99
- Professional Version with ALL Features$39.99
- Advanced Remote Control$39.99
- All Charts$39.99
- Sloan Duochrome Chart$39.99
- Value Pack$59.99
- Professional Package$199.99
Control LITE
No in-app purchases
Questions
Is Eye Chart Pro free?
Is Control LITE free?
Do Eye Chart Pro or Control LITE have ads?
Which is updated more often, Eye Chart Pro or Control LITE?
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