Calculate VA vs BIO Camera
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
Read full descriptionHide full description
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.
BIO Camera
This application simulates a BIO-like view of the retina using an iPhone and VR headset with a specialized lens. It allows users to capture and save time-stamped retinal images in a format resembling traditional fundus photos. Manual camera adjustments can be made for optimal image quality.
- BIO-like retinal view simulation
- Capture retinal photos
- Manual camera settings
- Time and date stamping
- Rounded and reversed image format
Read full descriptionHide full description
This app provides a BIO-like view with an iPhone placed in a VR headset and used with a 20 diopter lens positioned in front of the eye. Photos of retinal views can be taken with the app's camera function. Camera settings can be manually adjusted to obtain optimal results. Retinal photos are saved in a rounded and horizontally reversed format, to match appearance of the traditional retinal fundus photo. The image is time and date stamped for documentation purposes.
Screenshots
Verdict
The clearest difference is ratings volume: Calculate VA at 3 against BIO Camera's 1. BIO Camera's advantage is iOS requirement (11.0 vs 16.6). On price, rating, ads and in-app purchases 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.
On the App Store both sit at effectively the same score — 5.0 for Calculate VA against 5.0 for BIO Camera. Both are backed by a comparable volume of ratings — 3 and 1 respectively.
| Parameter | Calculate VA | BIO Camera |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) | 5.0 (1 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 3 — better | 1 |
| Update frequency | Every 12 months | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 16.6 | 11.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 9 MB |
| Age rating | 12+ | 12+ |
| Developer | David Kramer | Howard Ellenberger |
Customer experience
Calculate VA
BIO Camera
In-app purchases
Calculate VA
No in-app purchases
BIO Camera
No in-app purchases
Questions
Is Calculate VA free?
Is BIO Camera free?
Which has better reviews, Calculate VA or BIO Camera?
Do Calculate VA or BIO Camera have ads?
Other comparisons
