Bulbwick
See the light before you buy the bulb.
The box says 806 lm, 2700 K, E27. The bulb you are replacing just said 60 W. Bulbwick lets you choose the light by looking at it in a drawn room, then writes down the exact bulb to ask for.
Coming soon to the App Store For iPhone. No account, nothing to buy.Why it exists
Watts stopped telling the truth
For anyone who is changing a bulb or lighting a room after a move. Lumens are brightness, kelvins are colour, and the cap has to fit — three numbers that are hard to feel at a shop shelf. Bulbwick shows them as light in a room first, so the choice is made by looking, not by decoding a carton. The illustration above is a simplified sketch of the idea; the app relights five rooms lamp by lamp.
What you can do
Six things, all on your iPhone
The warmth arc
Drag one arc from candle-yellow 2200 K to daylight-white 6500 K and the room is relit as you move. Each lamp keeps its own warmth and brightness.
Is it enough?
Say what the light is for — reading, cooking, dinner, desk work — and get a plain answer for your room size and wall colour: too dim, just right or too bright.
Before and now
Freeze the light you have, change the bulbs and drag a divider across the room to compare. Keep up to twelve looks.
A note for the shop
One tap turns the room into a list: cap, shape, lumens, kelvins, dimmable or not. The seller card reads in seven languages.
Caps at true size
Ten common caps drawn at real size. Hold the metal end of the old bulb against the screen to see which one you have.
Read the box
Fourteen numbers from a bulb carton, each explained in three short answers: what it is, what you usually see, and whether more is better.
The seller card
Show it. Do not explain it.
The card is set in large type and can speak the shop's language whatever yours is. This is the kind of card the app produces from a room:
- English
- Türkçe
- Português
- Español
- Deutsch
- Français
- Italiano
I am looking for this bulb:
Classic pear, warm white, non-dimmable is fine. It replaces an old 60 W bulb.
Privacy in short
Your rooms stay on your phone
- No account and no sign-in. There is nothing to register.
- No camera, microphone or location. Notifications are offered, never required.
- Rooms, looks and notes are stored on the iPhone only. A version check at start-up and messages you send to support are the only things that leave it.