Physics Toolbox Magnetometer vs Memoria

Measure, visualize, and record magnetic fields with precision — right from your iPhone. Physics Toolbox Magnetometer displays the magnetic field vector in x, y, and z dimensions along with total magnitude in microteslas (µT) or gauss, giving you the data you need for serious lab work or casual exploration. Three ways to view your data: - Chart — real-time graph with toggleable axes, adjustable line width, and fullscreen mode - Digital — large numeric readout for quick at-a-glance measurements - Compass — live heading with True North and Magnetic North display Built for the lab and the field: - Record and export data as CSV for analysis in other software - Adjustable sample rate from 1 to 100 Hz - Signal filters to reduce noise - Detects permanent magnets, electromagnetic fields, and background geomagnetic field Classroom-ready experiments: The magnetometer is well-suited for determining the inverse-square law for a point-source magnet, measuring the magnetic field produced by a solenoid, or capturing the periodic field variations of audio speakers and magnetic plate stirrers. Whether you are a physics student, teacher, engineer, or curious mind, Physics Toolbox Magnetometer turns your device into a capable scientific instrument.

Memoria turns the moments you already spend checking your phone into real study time. Interactive Home Screen widgets let you read a question, reveal the answer, and rate the card — without ever opening the app. STUDY FROM YOUR HOME SCREEN • Medium and large widgets run a full study session: read, reveal, rate • Choose the session, the number of cards per day, and a cool-down between cards • Finish a round and see your progress donut — or tap "Show 5 more cards" • Open any card in full screen with one tap • A small widget keeps a progress chart of your chosen session in view SMART REVIEW • A spaced-repetition algorithm shows the cards you forget more often — and the ones you know, less • Rate cards Forgot, Hard, Okay, Easy, or Learned • Study 10, 15, 20, or all cards — from one deck or several at once • A progress bar summarizes the state of your learning • Reset a single card, or a whole deck, to start fresh RICH CARDS • Markdown: bold, italic, underline, headers, code, lists, checkmarks, links, and inline images • Add a photo to any question • Open a card's links in-app, without leaving your session • Edit a card mid-session the moment you spot a mistake • Reorder cards in any deck BUILD DECKS FAST • Generate complete decks with AI • Import from CSV text, CSV files, or folders containing CSVs and images • Add new cards to existing decks the same way • Export any deck as a CSV or folder — exports re-import perfectly, so decks are easy to share with friends EVERYWHERE YOU STUDY • Memoria runs on iPhone, iPad, and Mac, kept in sync with iCloud FEATURE & USAGE Memoria includes limited text cards, studying, sync, widgets, import, and AI decks out of the box. Your cards are always yours to export. A single, optional one-time In-App Purchase is available to unlock unlimited cards. No subscription required.