Hi Product Hunt, Fredrik here. I build small tools on my own as Nytto Labs, from Stockholm. StayTag started with our coffee machine. Every time it asked for descaling I had to find the old box to see which product it was, and I never knew when I last did it. Same story with the water filter, the vacuum bags and the pet fountain. So I made a label that sits on the machine. Type the part and how often it needs changing, print the QR on normal paper and tape it on. Next time you scan it and see the exact part, the last change, the next due date and a search for the replacement. One tap logs a new change and gives you a fresh label with the history on it. There is no account and no tag database. The details are in the QR link itself, so the label keeps working without me. The honest flip side: anyone who scans it can read it, so keep private things off it, and an old sticker never updates, you print a new one. It is free. If you turn on the eBay replacement link, a purchase may earn me a small commission. The site works in English and Swedish. What would you put the first label on? And what feels missing?

StayTag

Free QR labels that remember when you changed the filter

Free QR labels that remember when you changed the filter