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AI · alternatives · 2026

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24 alternatives to Refractify – Optical software against myopia

Last summer there was an Ask HN[1] about a Nature article that said bluring the blue and green color channels on screen may be good against early myopia development. The OP wanted such software and there was none available. So I quit my job and implemented this software, did a short video with a 3D artist about it. Turns out marketing is expensive, so I made an open source browser extension version too. How it works? There is a small neural network on the retina that tries to detect if the eye is far-sighted(most people are born far-sighted), and it is producing dopamine to slow or increase…

Refractify is optical software designed to help prevent myopia development by selectively blurring blue and green color channels on screens. Based on research suggesting this approach may slow nearsightedness… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Refractify – Optical software against myopia launched in 2024; newer entries below may have overtaken it.

  1. 1

    Powerful AI to increase photo resolution. No quality loss.

    2020 · letsenhance.io · its alternatives →

  2. 2

    Smartphone eye tests for refractive errors

    May 2026 · feyenally.com · its alternatives →

  3. 3
    Resizer▲151

    Double the size of your image while reducing noise

    2021 · resizer.in · its alternatives →

  4. 4

    I wanted Apple Vision Pros, but I don’t have $3,500 in my back pocket. So I made Apple Vision Pros at home. This was just a fun little project I made. Currently, the website doesn't work on screens less than 1200x728 (Sorry mobile users!) It also might struggle on lower end devices. For best results, have a webcam pointing right at you. I tested my website with a MacBook camera. Any comments, questions, or suggestions are greatly appreciated! blog: https://blog.andykhau.com/blog/eyesite check it out: https://eyesite.andykhau.com/ github:…

    2025 · blog.andykhau.com · its alternatives →

  5. 5
    EyesOff▲184

    I built EyesOff after getting fed up with people glancing at my screen in coffee shops. I trained a, custom and small, neural network to detect when people look at your screen. Whenever more faces than your allowed threshold are looking at your screen an alert will show. The model being ran locally ensures all data stays on your device - no cloud processing. I would love feedback on the application and any features you think I should implement!

    2025 · eyesoff.app · its alternatives →

  6. 6
    Iris▲103

    Protect your eyes from your computer's LCD

    2018 · iristech.co · its alternatives →

  7. 7

    Update your glasses and contact lens prescriptions from home

    2021 · clearhorizonsoptometry.com · its alternatives →

  8. 8
    Eye Yoga▲180

    Improve eyesight, relieve eye strain and prevent presbyopia.

    2020 · eyeyoga.app · its alternatives →

  9. 9
    Blink▲252

    Strengthen your eyesight with eye tracking

    2019 · apps.apple.com · its alternatives →

  10. 10

    Recently got an M3 Max MBP which gave me severe eyestrain after less than an hour of use. Turns out the major cause for that was temporal dithering at the GPU level. I built Stillcolor to disable temporal dithering from user space, which helped massively reduce eyestrain with little to no degradation in image quality.

    2024 · github.com · its alternatives →

  11. 11

    The simplest way to protect your vision

    2023 · care-eyes.com · its alternatives →

  12. 12

    Resize your images in 3 easy steps for free, by Promo.com

    2021 · promo.com · its alternatives →

  13. 13
    Focusdim▲137

    A simple Mac app to enhance your visual focus

    2025 · privdev.com · its alternatives →

  14. 14

    Real-time GPU shader editor for spatial computing

    2024 · shader.vision · its alternatives →

  15. 15

    Upscale images unlimitedly on your mac for free

    2025 · apps.apple.com · its alternatives →

  16. 16
    Eyeye▲94

    An eyesight trainer app powered by eye tracking

    2020 · apps.apple.com · its alternatives →

  17. 17

    Free AI tool to fix photos quickly

    2023 · fixblurry.photos · its alternatives →

  18. 18AD
  19. 19

    Hey HN, My wife is a designer, and one day she asked me if there was a tool to enhance images and improve their quality. I recommended a few to her, but she found that the suitable ones were too expensive, and the more affordable options didn't offer enough magnification, most only going up to 2x or 4x. So, I thought, why not create a tool that meets her needs, one that can greatly enhance image resolution and clarity while being very affordable to use? After over a month of effort, I finally completed this tool. It can now enlarge images up to 10 times, with a maximum support of 12,000…

    2024 · mejorarimagen.org · its alternatives →

  20. 20

    my first app, a Mac menu bar utility to remind you to blink more. any feedback would be much appreciated. or make it your own and share :)

    2025 · github.com · its alternatives →

  21. 21

    The app can prevent blindness in diabetes patients.

    2019 · retinarisk.com · its alternatives →

  22. 22

    AI powered eye-care app for long screen sessions

    2025 · blinkease.sandipdahal.com.np · its alternatives →

  23. 23

    Smart background & overlay color control

    2024 · chromewebstore.google.com · its alternatives →

  24. 24

    Easily Add Focus and Depth to Your Photos on Mac

    2018 · effectmatrix.com · its alternatives →

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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →