Calculate VA vs HOTV Visual Acuity Test
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Calculate VA
Instantly convert between common visual acuity measurements. This tool is designed for eye care professionals needing to fluidly switch between Snellen, Decimal, logMAR, and ETDRS Letter formats. Get accurate conversions with a single tap.
- Instant visual acuity conversions
- Supports Snellen 20/20
- Supports Snellen 6/6
- Supports Decimal
- Supports logMAR
- Supports ETDRS Letters
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Calculate VA gives you a quick and accurate way to easily convert between common measures of visual acuity. Conversions are made instantly when you enter one of the visual acuity measurements and press "Calculate". Choose from: * Snellen 20 * Snellen 6 * Decimal * logMAR * ETDRS Letters This is useful for any optometrist or ophthalmologist who needs to convert fluidly between all 5 of the common visual acuity measures.
HOTV Visual Acuity Test
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ATS-HOTV Remote Visual Acuity Testing app for X06 study.
Screenshots
Verdict
The clearest difference is update cadence: HOTV Visual Acuity Test at every 3 months against Calculate VA's every 11 months. HOTV Visual Acuity Test also leads on iOS requirement (12.0 vs 16.6). 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Calculate VA ships an update every 11 months, HOTV Visual Acuity Test every 3 months. The most recent releases landed on October 26, 2026 and October 11, 2026 respectively.
| Parameter | Calculate VA | HOTV Visual Acuity Test |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 11 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 16.6 | 12.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 37 MB |
| Age rating | 12+ | 17+ |
| Developer | David Kramer | Rino Enterprises LLC |
In-app purchases
Calculate VA
No in-app purchases
HOTV Visual Acuity Test
No in-app purchases
Questions
Is Calculate VA free?
Is HOTV Visual Acuity Test free?
Do Calculate VA or HOTV Visual Acuity Test have ads?
Which is updated more often, Calculate VA or HOTV Visual Acuity Test?
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