See every
change clearly
A personal vision journal for people living with macular degeneration — record, track and share how your vision changes over time.
The Amsler Grid
The same tool your
eye specialist uses
The Amsler Grid is a simple black-and-white grid that ophthalmologists use to detect and monitor changes in central vision caused by macular degeneration and other retinal conditions.
Fovcus puts this tool in your pocket — so you can record what you see between appointments and give your specialist a precise, dated record of how your vision is changing.
Features
Everything you need
to track your vision
Draw on the grid
Mark wavy, blurry or missing areas directly on the Amsler Grid. Different colours for different types of distortion.
Bend individual lines
Move single grid lines to exactly where they appear to you. Show the precise distortion pattern with sharp angular control.
Black hole effect
Hold your finger still and lines spiral inward — simulating how areas of vision loss pull and distort surrounding lines.
Session history
Save dated sessions for left and right eye separately. Add a label — "after injection", "good day", "flare up" — for context.
Compare any two sessions
Tap any two saved sessions to compare side by side and get a plain-language summary of the difference.
Share with your doctor
Export a complete report with all session grids, dates, notes and scores. Share by email, AirDrop or Messages.
Ghost overlay
See your previous session faintly behind your current drawing — trace exactly what has changed since last time.
Flexible reminders
Set a daily, weekly or monthly reminder to check your grid. Choose the time and day that suits your routine.
Private by design
All data is stored on your device only. No account. No internet connection required. No data ever leaves your phone.
How it works
Simple to use,
every time
Cover one eye
Cover your right eye and focus on the centre dot. The app reminds you which eye to cover each time.
Mark what you see
Draw on the grid to mark wavy, blurry or missing areas. Bend lines or use the Black Hole effect for vision loss.
Save your session
Save with date, notes and a label. Repeat for your other eye. Your history builds up automatically.
Track & share
Compare sessions side by side. View your progress chart. Export a report to share at your next appointment.
Accessibility
Designed for people
with vision difficulties
Every detail has been designed with people who have vision impairment in mind — because they are the people who will use it most.
Pricing
Simple, honest pricing
The core Amsler check is always free. Unlock full tracking and sharing with a one-time purchase — no subscription, ever.
Always free
Essential
No credit card needed
- Draw on the Amsler Grid
- Both eyes separately
- Bend lines & Black Hole
- Save up to 5 sessions
- Session history & compare
- Progress chart
- Export & share
- Reminders
One-time purchase
Full Access
Pay once, own forever
- Everything in Essential
- Unlimited sessions
- Full session history
- Compare any two sessions
- Progress chart
- Export reports
- Daily/weekly/monthly reminders
- All future updates included
⚠️ Medical Disclaimer: Fovcus is a personal journal for recording your own visual observations. It is not a medical device and does not diagnose, treat, or advise on any medical condition. Always consult your ophthalmologist or retinal specialist for diagnosis and treatment. If you notice sudden changes in your vision, contact your doctor immediately.
Contact
Get in touch
Questions, feedback, or support — we'd love to hear from you.