GridMath vs InterestOS

GridMath generates quick, random, printable math worksheets for grades K–3. Choose addition, subtraction, multiplication and/or division, set the result range and problems per page, then get crisp PDFs ready to print or share—entirely offline. Beyond generation, the app keeps a local library of your worksheets, lets you open, reprint or delete files, and helps you track progress with per-sheet results (correct answers, time, effort) and summary trends. No account required. Woks offline.

InterestOS turns what your child already loves — dinosaurs, soccer, space, horses — into personalized lessons they’ll actually want to sit down for. Fill them in right on your iPhone or iPad, or print them out. Tell us your child’s name, grade, and a few interests. InterestOS picks an official grade-level standard and writes a complete learning pack around it in seconds: • A STORY starring their interests, written at their reading level • A WORKSHEET on a real K–5 skill, aligned to official standards — tap it in or print it • A PARENT GUIDE so you can teach it in a few minutes — no prep • Original, kid-friendly artwork you can print in color, black & white, or as a coloring page PRINT IT, OR TAP IT IN Every worksheet can be printed — or completed right on your iPhone or iPad. Your child taps and types their answers and each one checks itself instantly, with gentle encouragement instead of red X's. When they finish, you see exactly what they answered and what they missed. It all happens on the device: no internet, no AI, nothing about your child sent anywhere. Every pack is built on real academic standards — the full Common Core (Reading, Writing, Math, Language), the Next Generation Science Standards, and California History–Social Science. You choose the subject and skill; we handle the rest. WHY PARENTS LOVE IT • Personalized to your child, not a generic worksheet • Hand over the iPad, or print at home and go — the couch, the kitchen table, the car • Follows your child’s grade, from Kindergarten through 5th • A simple “journey” view tracks skills practiced and completed PARENT-FIRST AND PRIVATE BY DESIGN • No child login and no child chat — a parent runs everything • We only use a first name/nickname, grade, reading level, and interests to make a pack. Never an address, school, birthday, or photos. • Brand-name interests are converted to safe, generic themes before anything is generated, so packs stay original and age-appropriate. SUBJECTS Reading · Writing · Math · Spelling & Vocabulary · Science · Social Studies TRY IT FREE Make 2 personalized packs free, no card required. Printing, layout edits, and fixing a pack are always free. INTERESTOS PREMIUM Unlimited fresh, AI-personalized packs — as many as your family wants. InterestOS Premium is a monthly auto-renewing subscription — $6.99/month after a 7-day free trial. • A payment method is required to start the free trial. You are not charged during the 7 days; billing begins only after the trial ends, unless you cancel first. • Payment is charged to your Apple ID when the free trial ends and at the start of each renewal period. • The subscription renews automatically unless canceled at least 24 hours before the end of the current period. • Manage or turn off auto-renew anytime in your App Store account settings. Terms of Use: https://interest-os.com/terms.html Privacy Policy: https://interest-os.com/privacy.html