MathA vs LeagueLog

MathA is a fast, friendly way to sharpen your mental math. Pick what you want to practice, set the difficulty, and race the clock to beat your best streak — no internet, no ads, no sign-up. Whether you're a student building number sense, a parent looking for a safe app for the kids, or an adult keeping your arithmetic sharp, MathA turns daily practice into a quick, satisfying habit. WHAT YOU CAN PRACTICE - Addition, subtraction, multiplication, and division - Percentages (common types and ranges) - Exponents and squares - Adjustable number ranges and digit counts MAKE IT YOUR OWN - Difficulty progression that adapts as you improve (5 levels) - Timed challenge mode — choose your challenge duration and time limit per problem - Quiz mode for focused sets - Streak tracking to keep your momentum going TRACK YOUR PROGRESS - Lifetime stats: games played, total correct, best streak, average score, and time played - Recent games history so you can see yourself improve MADE TO ENJOY - Clean, colorful themes and dark mode - Sound effects and optional background music - Smooth, distraction-free design PRIVATE BY DESIGN - Works completely offline - No ads, no accounts, no tracking - No personal data collected — everything stays on your device - Family-friendly and suitable for all ages Download MathA and make mental math a daily win.

Every Astronomical League observing program, on the device, at the eyepiece — and an honest answer to the question that decides the night: will tonight's attempt actually work? 32 PROGRAMS, 5,696 OBJECTS, NO SIGNAL NEEDED Object lists, completion rules, certificate thresholds and coordinator details are all stored locally. Dark sites have no signal; nothing here needs one. No account, no network requests, no location access required. ONE OBSERVATION, EVERY CERTIFICATE IT EARNS Log M 31 through binoculars from a city and it counts toward Messier, Binocular Messier and Urban at once. Where an observation does NOT count, the app names the rule that stopped it — a binocular program will not accept a telescope, Urban only credits light-polluted skies, and the same object under a second catalogue number is not a second observation. WHETHER TONIGHT WILL WORK The hours an object is both high enough and the sky is genuinely dark. Whether it is within reach of your aperture from your sky. Whether a filter will help — which, for most objects, it will not, and the app says so rather than selling you one. ALL THE WAY TO THE CERTIFICATE Finder charts with Telrad and finder circles at five fields of view. Star hops. The questions each program's manual actually asks. Companions inside the same field, so you catch six without moving the telescope. And a covering letter to the program coordinator when a list is finished. BUILT FOR THE DARK Red-light mode throughout, plus optional screen dimming that restores your brightness when you leave. Everything readable without costing you twenty minutes of dark adaptation. THE LOGBOOK THAT CHECKS ITSELF Import an existing logbook as CSV. The check explains, entry by entry, what earns nothing and why — and offers near-miss corrections for designations that do not exist, which you accept or ignore. Nothing is ever corrected silently. ALSO • Home Screen and Lock Screen widgets: when it gets dark tonight, how long the window runs, how much of it is moonless, and what is up right now • Observing sessions with conditions, and Live Activities while a session runs • Sketching, with full-resolution review • Statistics, an observing-year report, and PDF or CSV export • Master Observer progression tracking • Full VoiceOver support, Dynamic Type, and iPad Object lists and program rules are the Astronomical League's, included with permission. Positions are cross-checked against OpenNGC (CC BY-SA 4.0); where a published coordinate is wrong by more than a degree, the corrected position is shown and the original noted. LeagueLog is an independent app and is not published by the Astronomical League.