Stoichiometric equations vs Essential Guitar Note Trainer

Stoichiometric Equation balances chemical reaction equations for you — no trial and error, no guessing. Enter the reactants and the products, tap Balance equation, and the app returns the stoichiometric coefficients as the smallest set of whole numbers. Balancing an equation means making sure that the same number of atoms of every element appears on both sides. For a reaction such as 2Na + Cl₂ = 2NaCl you can still do that in your head. For e.g 3As₂S₃ + 28HNO₃ + 4H₂O = 6H₃AsO₄ + 9H₂SO₄ + 28NO, trial and error quickly stops being practical. That is exactly where this app takes over. HOW IT WORKS Instead of guessing, the app treats the equation the way a mathematician would: every unknown coefficient becomes a variable, the atom counts for each element become one linear equation, and the resulting system is solved with Gaussian elimination. The coefficient matrix is transformed into reduced row echelon form and the solution is scaled to the smallest whole-number coefficients. The complete derivation is included in the app, step by step, with a fully worked example — so you can not only get the answer, but also understand how it is found. FEATURES • Balances simple reactions and long, complex equations alike • Nested grouping with parentheses ( ), square brackets [ ] and braces { } • More than 90 chemical elements, written with the international IUPAC symbols • Results in the smallest whole-number coefficients • Clear, formatted output: proper subscripts, highlighted coefficients, monospaced layout • Long results are wrapped automatically to fit your screen • Precise error messages — unbalanced brackets, unknown element symbol, non-balanceable equation and more, each named instead of a vague "invalid input" • A collection of ready-made example equations: tap one and it is solved instantly • Built-in theory section explaining the mathematics behind the solver • German and English interface, chosen automatically from your device language • Optimised for iPhone and iPad, in portrait and landscape BUILT-IN EXAMPLES The app ships with examples ranging from textbook reactions to equations that would take a very long time by hand,

Stop guessing where the notes live. Essential Guitar Note Trainer turns the fretboard into something you actually know — not something you have to think about. Short, focused sessions teach you every note on every string with spaced repetition, the same memory technique used by serious language learners. Open the app, tap START, and a single note appears. Find it on the fretboard. The app remembers what you got right, what you guessed, and what's slipping — and brings each note back exactly when you need to see it again. WHAT YOU GET • A guided path through all 6 strings in standard tuning • Spaced repetition that adapts to how well you actually know each note • Five mastery stages — New, Learning, Building, Strong, Mastered — so you can see your progress instead of guessing at it • A full fretboard map that fills in as you learn • Short, long, or continuous practice rounds — fit it into a coffee break or a longer session MAKE IT YOURS • Pick your fret range (5, 7, 9, 12, 15, 17, 19, or all 24) • Choose which strings to drill • Filter to naturals only, or pick your own notes • Labels in sharps, flats, both, or random — train the way you think • Choose an optional Time Pressure - count down or count up. HONEST AND SIMPLE • Start free with every note up to the 3rd fret. Subscribe to unlock the entire fretboard and learn the notes everywhere — cancel anytime. • No ads. No accounts. No data harvesting. • Works offline. • Your progress stays on your device. Built for guitarists at every level — from people picking up the instrument for the first time to players who've been winging it for years and finally want to stop. Practice ten minutes a day and the fretboard becomes a map you can read. Terms of Use (EULA): https://antair.com/essential-guitar-note-trainer-terms-of-use.html Privacy Policy: https://antair.com/essential-guitar-note-trainer-privacy-policy.html