Snellen test vs EMT MDS Maker+
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Snellen test
This app uses augmented reality to display a Snellen eye chart for visual acuity testing. It allows users to adjust the chart's size and position from a distance, simulating a professional eye exam. Ideal for quick vision checks at home.
- Augmented reality Snellen chart
- Adjustable chart size and position
- Remote control via device camera
- Distance simulation for testing
- Customizable display options
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The Snellen chart is a widely used tool for measuring visual acuity. Named after the Dutch ophthalmologist Herman Snellen, who created it in 1862, this chart helps assess eyesight. To get started, choose a vertical surface to display the chart, stand 6 meters away, and aim your device’s rear camera at the surface. Once the chart loads, you can adjust its position and size via the control panel or directly on the screen using drag-and-drop, rotate with two fingers, or zoom in/out gestures. Need to switch surfaces? Just tap the button with the two circular arrows. You can also mute the sound or hide help texts using the appropriate buttons.
EMT MDS Maker+
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This app is designed to report the WHO Emergency Medical Team Minimum Data Set (MDS) . Features: - EMTs can report the MDS by smartphone - To input data, no connections is required. Visit the EMT MDS Gateway ( https://www.mdsgateway.net ) for real-time updates on this application.
Screenshots
Verdict
The clearest difference is price: EMT MDS Maker+ at Free against Snellen test's $0.99. EMT MDS Maker+ also leads on update cadence (monthly vs every 4 months). Snellen test's advantage is chart position (#197 vs unranked) and iOS requirement (13.2 vs 15.6). On 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
EMT MDS Maker+ is free to download; Snellen test costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Snellen test ships an update every 4 months, EMT MDS Maker+ monthly. Both last shipped on October 15, 2026.
| Parameter | Snellen test | EMT MDS Maker+ |
|---|---|---|
| Price | $0.99 | Free — better |
| Positive reviews | 0.0% of reviews | — |
| Update frequency | Every 4 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Best chart rank | #197 — better | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 13.2 — better | 15.6 |
| Further details — not scored | ||
| Size | 3 MB | 9 MB |
| Age rating | 4+ | 17+ |
| Developer | Oleg Drobyshev | J-SPEED KENKYUKAI, GENERAL INC. ASSOCIATION |
In-app purchases
Snellen test
No in-app purchases
EMT MDS Maker+
No in-app purchases
Questions
Is Snellen test free?
Is EMT MDS Maker+ free?
Do Snellen test or EMT MDS Maker+ have ads?
Which is updated more often, Snellen test or EMT MDS Maker+?
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