TryDiff is a free online text and file comparison tool built for speed and simplicity. Paste or upload two files to instantly see differences side-by-side, with added, removed, and modified lines highlighted. No signup required — just open the site and start comparing.

Built for developers, writers, students, and analysts who need a fast, clean alternative to Diffchecker, Beyond Compare, and Meld. Works entirely in-browser, supports text and common file formats, and lets you download diff results.

Live at trydiff.com. Part of AIthinker LLC's lineup of no-signup developer utilities.

Track yourself with actionable notifications that you can respond to directly from your iPhone or Apple Watch.

Optimize your trackings by measuring the effects of new behaviors experiments, aiming at improving your scores.

Gain insights from your tracking's analytics.

• Define tracking *
• Set up tracking question, for example: "How energetic are you?".
• Define emoji-based, scored responses.
• Set up times to be notified, for example: every day at 2 pm (after lunch), and 6:30 pm (before dinner).

• Track by responding directly from the notification, on your iPhone or Watch.

• Optimize yourself by experimenting with new behaviors *

• Set up a timed experiment (for example: practice meditation daily, starting today).

• Keep responding to your set-up tracks as usual.

• Measure the success of your behavioral change by comparing aggregated scores, within the experiment timeframe and out of it.

• Gain insights from your tracking analytics * View your tracking's aggregated scores by day of week, or time of the day (are your energy levels higher on Saturday? are they lower in the evenings?)