Eyelid vs Bynocs
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Eyelid
This app analyzes photographs to calculate the opened eye ratio based on eyebrow and eyelid positions. It allows users to mark key points on the eye and save results as JPEG files.
- Calculates opened eye ratio
- Measures eyebrow and eyelid positions
- Uses primary gaze photographs
- Allows manual marking of eye features
- Saves results as JPEG
- Includes a camera with a spirit level
Read full descriptionHide full description
"Eyelid" provides the opened eye ratio using the eyebrow position, the upper-eyelid position and the lower-eyelid position. 【Usage】 Step 1. Prepare a photograph that the subject's eyes in the primary gaze position. Step 2. Expand the eyebrow and eyelid. Step 3. Set the red marks on the corneal limbus. Step 4. Using ▲ / ▼ buttons, set the green marks on the eyebrow, the upper eyelid margin and the lower eyelid margin. Step 5. Then showed the upper eyelid position (UEP), eyebrow position (EBP) and opened-eye ratio(OER). 【Topic】 - You can change the initial corneal size (transverse diameter and longitudinal diameter) . - "Eyelid" has the camera with a sprit level. Therefore you can get a straight photograph. - You can save the result as a JPEG format. 【Caution】 "Eyelid" is not the one to diagnose any illness.
Bynocs
Read full descriptionHide full description
Bynocs App is free to download and provides you information on various Binocular Vision anomalies. The app will provide the latest update on the subject at periodic intervals. It also provides information on BYNOCS, the award-winning Lazy eye treatment program. BYNOCS has been uniquely developed to manage amblyopia (lazy eye) and other Binocular Vision anomalies through a range of software-based activities. Being a cloud-based software, the therapy sessions can be accessed from a clinic or from home. The Bynocs app will be used by eye care practitioners such as Ophthalmologists, Optometrists, Orthoptists and also patients or anybody who is interested in this subject. Patients can manage their appointments with optometrists and get their queries answered over chat sessions. They can view their reports and keep track of their progress. Eye care practitioners can engage with their patients, manage their sessions and also keep track of the patient’s progress.
Screenshots
Verdict
The clearest difference is price: Bynocs at Free against Eyelid's $6.99. Bynocs also leads on update cadence (every 3 weeks vs every 6 months) and iOS requirement (12.0 vs 15.0). 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
Bynocs is free to download; Eyelid costs $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Eyelid ships an update every 6 months, Bynocs every 3 weeks. The most recent releases landed on October 24, 2026 and October 1, 2026 respectively.
| Parameter | Eyelid | Bynocs |
|---|---|---|
| Price | $6.99 | Free — better |
| Rating | 2.0 (1 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 6 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 4 MB | 52 MB |
| Age rating | 4+ | 12+ |
| Developer | Medic Engineering K.K. | Kanohi Eye Private Limited |
In-app purchases
Eyelid
No in-app purchases
Bynocs
No in-app purchases








