Biswajit Kar

Hey PH! I'm Biswajit, solo dev of MinusPlus (minusplus.app).
This started as my hack for SAP number crunches:
Just type a number, hit enter , add another number - see the result. No need for (+ symbol)

Or copy from database tables/spreadsheets, paste anywhere, and get the result.

Hey PH makers

I just launched Page Voice a simple AI tool that turns any PDF into a narrated audiobook with synchronized text highlighting. You upload a file, pick an AI voice, and Page Voice reads it aloud while showing the text in real time. The goal was to make reading more accessible, enjoyable, and flexible whether you re studying, working, or multitasking.

I built it because sometimes listening to content feels easier and more immersive than scrolling and I wanted a tool that did this without a ton of setup. Curious to hear from others here:

• Do you prefer listening or reading complex docs?

• What features would make audio-based reading tools even more helpful for you?