Feevio
FreeCalculator toolkit for online sellers — know your margin before you list.
About Feevio
Feevio
Calculator Toolkit for Sellers
A financial calculator toolkit with ten purpose-built calculators for small business sellers. Real-time calculations, side-by-side comparisons, and built-in fee presets for eBay, Amazon, Etsy, and more — no spreadsheets required.
More apps by iDEVTim
See all
Zenful Youth
Coming SoonSay what's on your mind and get a guided meditation written for exactly that.
Cage Break
FreeBrick-breaker animal rescue. Ten worlds, 40 animals to save, no ads.
Piece of Mind
FreeJigsaw puzzles cut from your own photos.
LunoPeak
NewLocal-first dashboard for Claude Code, Codex and Cursor.
Sift
NewSee how much disk space you can safely get back, and undo it for 30 days.
ChillMac
FreeSystem monitoring and fan control, living in your menu bar.
Have an app idea of your own?
I build web, iPhone and desktop apps like these, usually from napkin sketch to working prototype in under two days.
Book a free call