Triangle Sketch vs Retrieve

Triangle Sketch is a hands-on geometry tool for drawing and exploring triangles. Draw a triangle with your finger, check its measurements, edit side lengths and angles, move vertices, enter coordinates, and view useful triangle facts. Triangle Sketch helps students see how triangle measurements connect instead of only reading formulas. Features: • Draw triangles directly on a graph • Edit side lengths, angles, and vertex coordinates • Work with any triangles and right triangles • View area, perimeter, triangle type, height, centroid, incircle, and circumcircle • Use right-triangle trig tools • Change units, decimals, colors, grid snapping, and display options • One-time hints help students discover important tools Triangle Sketch is designed for students, teachers, and anyone learning geometry.

Retrieve is a flashcard app that tells you what to study each day. It schedules every card so you see it right before you'd forget it, which is the fastest way to actually remember things. Pay once. No subscription, no ads, no account. HOW IT WORKS Make a deck and add cards. Each day, Retrieve shows you the cards that are due. Flip a card, tap how well you knew it (Again, Hard, Good or Easy), and Retrieve picks the next date for it. There's nothing to set up. GET YOUR CARDS IN • Type cards one at a time, including fill-in-the-blank cards • Paste a list of terms and definitions. Retrieve works out the format. • Import a CSV or TSV spreadsheet • Import .apkg deck files, with their images and tags • Turn a photo of a diagram, map or textbook page into cards that each hide one label STUDY WITHOUT GETTING BURIED • New cards are capped at 20 per deck per day (you can change it), so a big deck doesn't flood you • Each deck shows how many cards are due today • The grade buttons show when you'll see the card again • Cards you miss come back later in the same session • Optional daily reminder at a time you pick • Study by tag, or review ahead when you want extra practice FIND AND TRACK • Search every card in every deck from the main screen • See your day streak, total reviews and cards learned YOUR CARDS STAY WITH YOU No account, no sign-in, no analytics. Export any deck as a CSV whenever you want. PRICE Free for one deck of up to 150 cards. A one-time $9.99 purchase gives you unlimited decks and cards. No subscription.