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däpter
The notes app that does the math
A universal, private notes app where every line runs through a real calculation engine. Math, currencies, units and dates resolve as you type. Local-only.
About däpter on Product Hunt
“The notes app that does the math”
däpter was submitted on Product Hunt and earned 0 upvotes and 2 comments, placing #114 on the daily leaderboard. A universal, private notes app where every line runs through a real calculation engine. Math, currencies, units and dates resolve as you type. Local-only.
On the analytics side, däpter competes within Productivity, Notes and Education — topics that collectively have 742.8k followers on Product Hunt. The dashboard above tracks how däpter performed against the three products that launched closest to it on the same day.
Who hunted däpter?
däpter was hunted by Anuar Shaidenov. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of däpter including community comment highlights and product details, visit the product overview.
hi guys,
i'm finally launching an app, and this is very exciting because i've been working on this for a while now, and one of my dreams is finally coming true.
i'm the type of guy that enjoys the notes app on iphone, the notions of the world, the obsidians. i like keeping things in my notes all the time. i had worked on one of my first apps ever called cushn, a very nice app where i would keep track of my finances, but there was always something missing. then one day i saw a post on threads where someone was keeping their monthly budget plans right inside their notes, and that's how this idea kinda came about. and obviously i got inspired by numi, one of the greatest apps i've ever used, and i wanted to take that similar experience to mobile.
so that's how däpter was born. an apple-notes style app where your notes actually do the math as you type. write 2 + 2, 20% of 300, 120 usd in eur, or today + 21 days and the answer just shows up in the margin. no switching to a calculator, no leaving the note. prose and math live on the same page. only the lines that look like calculations light up, and one broken line never breaks the rest. i wanted calculations and your thoughts to just be one place. and it's all local and private, i decided to keep it stupidly simple - no servers, no network, your numbers never leave your phone. it also speaks plain english, kazakh🇰🇿🇰🇿🇰🇿 and russian so units and currencies convert the natural way you'd write them.
the process itself really evolved along the way. the hard part wasn't the notes app, it was resisting the urge to fake the math with regexes. i ended up building a real little calculation language under the hood so units, currencies, dates and functions could just keep growing. and making it feel instant without ever fighting your cursor took the most iterations by far.
anyway, this is a big one for me. would genuinely love your feedback, especially the calculations you wish just worked. that's basically my roadmap 🙏