Spotidown

2-Cycle Oil Mix Calculator

A free, no-sign-up web tool that turns any gas amount and ratio into the exact 2-stroke oil to add, in ounces and millilitres.

FixMyPDF

Browser-based toolkit offering 79+ PDF tools to split, merge, compress, convert, and edit PDFs. All processing runs locally in the browser so files are not uploaded to servers; free to use and no registration required.

EarChord

EarChord is a free chord finder for musicians. Drop an MP3, WAV, M4A, AIFF, FLAC or OGG file and it returns a clickable chord timeline, the key and the tempo in BPM, which you can copy or download as a text file. The analysis runs entirely in your browser tab using classical signal processing, so the audio is never uploaded, there is no account and there is no daily or monthly limit. Guitar, ukulele and piano pages add chord diagrams, and the progression page shows Roman numerals relative to the key. A microphone guitar tuner is included. EarChord reports major and minor triads only, so sevenths and suspensions come back as the nearest triad. A free Chrome extension shows chords under a YouTube video as it plays, and a separate iPhone ear training app is available.

Firstfruits

Firstfruits is a free iPhone app for Christians that turns time in the Word into credit for the apps that eat your day. Give 5 minutes in the Word, earn 1 credit, and unlock 15, 20 or 30 minutes of the apps you chose to limit, at whichever rate you set. It does not replace your Bible app: time you spend reading in the Bible app you already use counts automatically. When you really need your phone, an honest emergency exit unlocks it right away. It is not hidden, it is not punished and it will not break your streak. There are no ads and no subscription, and Scripture and prayer are never behind a paywall. Everything stays on your phone: there is no account, no server and nothing is sent anywhere. Requires iOS 17 or later.

MotionSites

MotionSites is a library of 550+ AI website prompts for Lovable, Bolt, Cursor and Claude. Every entry is a finished design (landing page, SaaS site, portfolio, app screen or section) paired with the exact prompt that rebuilds it, so AI-built sites look designed instead of generic. Free prompts available at motionsites.org/free; paid plans from $29/month.

TerraGIS

TerraGIS is a modern desktop GIS application for professional spatial workflows on Windows. Designed for teams who need practical mapping and analysis tools without heavy infrastructure.