Independent app studio / Seattle area
One person. Three apps. Zero fluff.
FERBsystems makes apps for staying connected, eating well, and measuring your home.
Apps
Three apps from one independent studio.
boop!, NutriLog, and BlindFit. Each has its own privacy policy and its own look.
App 1 / iPhone and Android
boop!
Send a quiet signal to the people who matter.
iPhone: pre-release testing / Android: beta testing
boop! is a one-to-one signal for your private circles. No feed, no noise. Join a circle with a QR code or a unique link, then send a boop and feel the heartbeat haptics on the other side. boop! is in testing now, so features may change.
- Private circles built with QR codes or unique links
- Real-time visual feedback and heartbeat haptics
- Home Screen widgets for supporters, on iPhone and Android
App 2 / Android
NutriLog
Nutrition tracking, intelligently done.
Android: closed testing, early access
NutriLog is a nutrition tracking app for Android. It syncs nutrition data with Android Health Connect, read and write only. Your data is stored in Google Firebase in the US and encrypted in transit. It is not sold, and there are no ads. NutriLog is not for children under 13. It is a tracking tool, not medical advice.
- Food diary: log by search, barcode scan, or photo, with full macros from USDA FoodData Central
- LOGan, an AI coach powered by Google Gemini, that uses your goals, biometrics, and logged food
- Smart Targets: set calorie and macro targets by percent or grams and see live progress
App 3 / iPhone
BlindFit
Measure a window from one photo.
iPhone: TestFlight, iOS 16 or later
BlindFit measures a window for blinds from a single photo. Hold a reference of known size against the glass, such as a sheet of Letter paper, a yardstick, a ruler, or a tape measure, and take a photo. The app finds the reference and the window frame. You adjust the corners, and they snap to nearby edges. It is for DIY homeowners and renters who want to order blinds without a measuring visit. Everything runs on your phone, and your photos never leave it.
- Narrowest and widest width, shortest and longest length, since real windows are rarely square
- Order size for an inside or outside mount, with an accuracy estimate
- Live camera with a level guide, optional LiDAR depth, and a validation log to compare against a tape measure
BlindFit gives estimates. Check key measurements with a tape before you order custom blinds.
About
One developer, one app at a time.
I'm Avi Mizrahi, the developer behind FERBsystems. I work on my own from the Seattle area in Washington State. I build apps I would want to use. Each one tries to do a job clearly, without clutter.
I read support email myself and try to reply to every message. I try to explain what data an app uses in plain words. When an app uses AI, I say so.
FERBsystems is small and independent. I build for fun, and I like it that way. I plan to keep building carefully, one app at a time.
Privacy
I explain what data each app uses, in plain words.
Plain language
No jargon in the apps, the policies, or the support replies.
Accessibility
I want every app to work for as many people as possible.
Support
Questions, bugs, ideas.
Have a question, a bug report, or an idea? Email me. I read every message and reply myself. Please include the app name, your device, and what happened. Screenshots help. Do not send passwords or payment details.
I try to reply within 10 business days. I build these apps for fun, so replies can take longer.
How do I delete my account and data?
Email [email protected] from the address tied to your account. Put "Delete my data" and the app name in the subject line. I will confirm when it is done. You have the right to delete your data and remove your account at any time. See also the Data deletion page.
Which platforms do the apps run on?
boop! is in pre-release testing on iPhone and beta testing on Android. NutriLog is on Android and is in closed testing. BlindFit is an iPhone app in TestFlight.
Who handles subscriptions and refunds?
The store you bought from handles them: Google Play or the App Store. I cannot issue refunds directly. Use your store account to manage or cancel a purchase.
How do I report a bug?
Email [email protected]. Tell me the app name, app version, your device and OS version, what you expected, and what happened. Screenshots help.
How do I request a feature?
Email [email protected] with the app name and what you would like. I read every idea. I cannot promise to build each one.