Calcora is a free platform for practicing math problems of all difficulty levels. Solve problems, maintain your streak, and compete with friends on the leaderboard.

The Rules

• No Calculator. Solve every problem by hand. Mental math and working on paper are part of the challenge.
• No AI Assistance. Work through problems yourself. The goal is to sharpen your own skills, not to outsource the thinking.
• Pen & Paper Only. All you need. Write out your steps and arrive at a solution the old-fashioned way.

CodeHerald provides a new way to keep track of your code review queue, grouped by your next action needed.

When would you use CodeHerald?

• You work in a team that does code reviews.
• Your team receives ad-hoc code review requests via multiple channels: DMs, emails, bookmarks of filtered lists.
• Your team sometimes loses track of small pull requests, delaying them days.
• Your team find ad-hoc code review requests distracting, but cannot put a finger on why.
• Your team tried different strategies to improve code review process, and none of them felt right.

If any of the above is true, CodeHerald will help you.

What can CodeHerald do for you?

CodeHerald groups pull requests by next action: must review, needs an update, can be merged. It allows you to replace slack, emails, filters, and browser bookmarks with one single page that you can open at a glance and decide which PR to tackle next.