Kevin Groenendaal

Payments made simple. Sell subscriptions & products online.

Pay your way into the highscore

One app to discover the world’s best journalism

Keep track of your subscriptions

The most powerful workout tracker ⚡️

Create and share your own photo filters on Mac & iPhone

Discover the world’s best journalism with one account

JS plugin to make AppleTV icons on the web super easy.

Simple whiteboard app to make sketching quick & easy

Save over 95%

A curated directory of 400 resources & tools for startups

Make people in photos look faux naked.

Lend Your Eyes to the Blind (pre-launch)

Everything you need to sell apps and content.

The Simplest Way To Discover Amazing Newsletters

Simple app for grabbing & tweaking colors you see on screen.

Send an anonymous picture message to anyone with a phone #

Stop spam in your inbox - send it to MailDude

Connect to the Internet through SMS without data or Wi-Fi

Timelapse video walkthroughs of cool stuff created with code

A beautiful replacement for JavaScript's alert()

Make animated GIFs into paper flip books

Double Your Email List

Play Tic Tac Toe With Random People [iOS]

Now you can Post, Like, Follow, Comment and More

From inspiration to creation

A multiplayer music experience

Create & send email campaigns simplified