---
title: "Lensometer: Estimate Glasses - Reviews, Revenue and Downloads in Canada | Apple App Store"
description: "Estimate the power of single vision eyeglass lenses using your phone's camera and an Amsler grid.  Lensometer uses an on-device Core ML model to analyze a photo of an Amsler grid taken through an eyeg"
---

# Lensometer: Estimate Glasses — Canada
> Estimate power, cylinder, axis

![Lensometer App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/6f/e0/7c/6fe07c53-c68c-93b7-ec39-ca07940fe36e/AppIcon-0-0-1x_U007epad-0-1-85-220.png/434x0w.png)

**Developer:** [My Call Bag](https://apptail.io/developer/my-call-bag-dLb)
**Category:** Medical
**Rating:** N/A (0 ratings)
**Price:** Free
**Bundle ID:** EyeChart.Lensometer
**Store:** Apple App Store
**Country:** Canada
**Version:** 1.0 (released 2026-03-24)
**Original Release:** 2026-03-24
**Languages:** English

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/ca/app/app/id6758786730)
**AppTail Page:** [https://apptail.io/app/lensometer-estimate-glasses-pPdz/canada](https://apptail.io/app/lensometer-estimate-glasses-pPdz/canada)

## Lensometer Description
Estimate the power of single vision eyeglass lenses using your phone's camera and an Amsler grid.

Lensometer uses an on-device Core ML model to analyze a photo of an Amsler grid taken through an eyeglass lens and predict the lens prescription — including sphere, cylinder, and axis.

HOW IT WORKS
1. Display an Amsler grid on any screen by visiting AmslerGr.id in a browser, or use a printed Amsler grid.
2. Hold a single vision lens halfway between your phone and the grid.
3. Take a photo through the lens with the grid centered in the square overlay.
4. The app analyzes the image and returns an estimated prescription in seconds.

FEATURES
- AI-powered lens power estimation using a trained Core ML model
- Works with single vision lenses (not bifocals or progressives)
- Supports both positive and negative cylinder notation
- Spherical equivalent calculation
- Prescription history with automatic saving
- Camera overlay guides for grid alignment and lens positioning
- Fully on-device — no internet connection required

IMPORTANT DISCLAIMER
This app is NOT FDA approved and has NOT been validated for clinical use. It does not replace a traditional lensometer or professional eye examination. Results should not be used for clinical decision-making or prescribing eyeglasses. This is an educational tool intended for rough estimation purposes only.

## Lensometer Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/50/21/a6/5021a64f-7af6-11b1-74db-045bbb90035e/01.png/1284x2778.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/5f/83/56/5f8356ce-0096-d9a0-5b86-f027318f7f1d/02.png/1284x2778.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/c8/69/46/c8694682-bb7a-1548-6ddf-0632c1ab62b2/03.png/1284x2778.png)








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