MathRise vs Sums

MathRise is the competitive way to get faster at mental math. Step into the arena and face real opponents in fast, 10-problem duels. Same problems, same clock — the fastest correct answers win. Every duel moves your Elo rating, just like chess. Climb the tiers from Rookie to Grandmaster and prove you're the sharpest calculator in the world. NEW: THE SHOP & KEYPADS Earn coins as you play and spend them in the shop: neon, mechanical, ink, retro-LCD keypads and more, unlocked level by level. Your keypad, your style. FRIENDS & FRIEND CHALLENGES - Add friends by username, follow their stats and rank. - Challenge a friend in one tap: the challenge lands right in their app, with problems calibrated halfway between your two levels. They beat your time? Rematch in one tap. - Challenge anyone with a link or a code: same problem set, fastest wins — with a shareable score card. LIVE GROUP SESSIONS Open a room and show the code: your friends — or a whole classroom — join with just a first name, no account needed. Everyone races the same problem set, podium at the finish, and one tap starts the next round. WHY MATHRISE - Ranked duels: head-to-head mental math races with a true Elo rating. No luck, pure skill. - The Daily Challenge: one try a day, the same 10 problems for the whole planet. Where do you land on today's board? - Global & national leaderboards: see where you stand in your country and worldwide. - Daily quests & coins: three fresh goals every day — rewards pay out automatically. - Streak & streak freeze: play every day, and protect your run when life happens. - Win streaks: chain victories for up to double XP. - Practice mode: drill addition, subtraction, multiplication, division, times tables, squares, percentages, fractions. - Warm-up: a quick 90-second arithmetic sprint to get your brain firing. BUILT FOR SPEED No clutter, no childish gimmicks — a clean, dark, focused arena for teens and adults who want to get genuinely fast at mental arithmetic. Whether you're sharpening up for school or exams, keeping your mind quick, or you just love the thrill of a photo finish, MathRise turns mental math into a sport. FOR TEACHERS Run it as a class game: create a session, write the 6-letter code on the board, and up to 100 students race the same problems — no student accounts needed. Details: mathrise.io/classroom Duel. Calculate. Rise.

Ten problems. One attempt. The same ten for everyone on earth today. Sums is mental math for adults who got tired of being the person who reaches for a calculator to split a bill. So the whole app is a calculator — an LCD, keys that press, a lime equals — and you're the one doing the sums. One shared puzzle a day, then practice that actually aims at your level. THE DAILY A new set of ten drops at midnight, local time. Everyone in the world gets the same problems from the same seed. You get one attempt, and the clock runs from the moment you start — step away and it keeps running, which is what makes the number at the end mean something. Finish and you get your time, what you got right, where you were fast, where you were slow, and your percentile for the day. Then a card worth sharing: your marks and your time, nothing about the answers. Free forever. It's the whole point of the app, not a sample of it. PRACTICE Eleven modes, infinite generated problems, no content packs to buy: • Sprint — as many as you can in 60, 90 or 120 seconds • Zen — no timer, accuracy only • Survival — it runs until you miss one • Skill — drill one thing until it's automatic • Automatic — the skills you get right but slowly, until they're quick • True / False — 47 × 6 = 272? Yes or no, fast • Missing — 47 × ? = 282 • Money — tips, splits, discounts, unit price, in your currency • Chains — 17, +8, ×2, −5, and go • Clocks — read the dial, estimate the angle, count the minutes • Review — the error patterns that are due today STREAK The streak counts completed dailies, nothing else. One free freeze a month covers the day life got in the way. No red banners, no guilt. WHAT YOU WON'T FIND No ads. Not fewer ads, not ads-only-in-free — there is no ad network in this app at all. No lives, no energy, no coins, no cartoon mascot. No account to make. You play anonymously from the first tap. Every mode and every daily works offline. PREMIUM Free gives you the entire daily and unlimited Sprint, Zen and Survival. Premium changes what practice does for you: • Adaptive difficulty in every mode — problems that land at the edge of what you can do, instead of an average of everyone • The review queue — mistakes come back as patterns on a schedule, not as the same problem again • The full breakdown after every run, and deep stats: your error profile, your median time per skill, your daily history • Skill, Automatic, True/False, Missing, Money, Chains and Clocks modes • Daily archive: replay the days you missed • Unlimited streak freezes and one repair a month Sums Premium is $4.99 per week with a 3-day free trial, or $39.99 per year in the US; the price for your region is shown on the App Store. Payment is charged to your Apple Account at confirmation. It renews automatically unless auto-renew is turned off at least 24 hours before the period ends; your account is charged for renewal within 24 hours of the end of the current period. Manage or cancel anytime in your Apple Account settings — we also send a reminder 24 hours before a trial converts, because a short trial without a warning is a trap. Terms: https://sums.day/terms Privacy: https://sums.day/privacy Sums makes one promise: you will get faster and more accurate at arithmetic in your head, and you'll be able to see exactly how much, per skill. Nothing about IQ, nothing about your memory, nothing we can't show you in your own numbers.