LabCalcPro vs Archive Learning

LabCalcPro is a precision serial dilution and solution preparation calculator for laboratory professionals. Enter your inputs and get step-by-step, bench-ready protocols instantly. WHAT IT DOES • Advanced serial dilution engine using the standard C1V1 = C2V2 formula • Automatically plans multi-stage serial dilutions for extreme ratios (≥1000×), now supporting up to 3 stages when required • Selects the best pipette from your available set • Rounds volumes to match real pipette resolution • Generates numbered, executable protocol steps • Shows full math derivations for verification NEW IN v1.2 AUTOMATIC 3-STAGE SERIAL DILUTION • Extends the solver beyond 2 stages for extreme dilution ratios • Transparently selects 1-, 2-, or 3-stage plans based on feasibility and pipette comfort • Labels intermediates clearly with concentration units • Documents stage selection reasoning in Show Math SAVED SOLUTES • Save frequently used molecular weights with a custom name • Instantly recall solutes from a searchable picker • Edit or delete saved solutes anytime • Stored locally on your device MOLARITY ↔ MASS • Calculate the mass of solute needed for a target molarity and volume • Or compute resulting molarity from a measured mass • Weighability-aware rounding aligned with analytical balance precision • Volumetric preparation assumption clearly documented in Show Math BENCH MODE Tap the flask icon to enter Bench Mode. The screen stays awake, inputs collapse, and protocol steps display in large text for use directly at the bench. BUILT FOR SCIENTISTS • Supports P10, P20, P200, and P1000 pipettes (customizable) • Handles M, mM, µM, and nM concentrations and L, mL, and µL volumes • Warns when transfer volumes are at pipette limits • Names intermediate solutions with concentrations during serial dilutions • Per-stage math transparency for serial workflows SAVE AND SHARE • Name and save calculations for later reference • Load saved calculations back into the calculator • Copy protocol steps to the clipboard • Export full calculations for sharing TRANSPARENT AND PRIVATE • All calculations run entirely on your device • No account required • No cloud sync, tracking, or ads • Full math shown for every calculation • Deterministic results; identical inputs always produce identical outputs LabCalcPro performs mathematical calculations only. It does not provide medical, clinical, safety, or experimental technique guidance.

You're three chapters deep into a fic you can't put down. Suddenly, there's a word you don't know. No need to leave the story — just tap to translate, save it with context, and keep reading. READ FANFICTION. LEARN LANGUAGES. Turn the stories you love into a way to learn languages. Read fanfiction, translate unfamiliar words, and build your own vocabulary without leaving the story. What stays in your vocabulary isn't just a word — it's a scene. Open the card a week later and you'll remember which fic it was from, who said it, and to whom. LEARN IN 40+ LANGUAGES Read fanfiction in your favorite language and translate unfamiliar words into your own. Choose from over 40 translation languages, including English, Spanish, French, German, Japanese, Korean, Chinese, Arabic, and many more. The app interface is available in 8 languages: English, Russian, Spanish, Ukrainian, Vietnamese, Korean, Japanese, and Belarusian. PRACTICE WITH GAMES AND QUIZZES Save words and phrases of up to 10 words, then practice them with flashcards, quizzes, Fillword, and context-based exercises. Spaced repetition brings words back for review when you're likely to forget them. No deadline calendar to chase. YOUR FANFICS. ALL IN ONE PLACE. Save your favorite fanfics to your personal library, organize them into folders, and pick up right where you left off. Save your favorite lines separately, too. Some quotes are worth keeping. YOUR READING OBSESSION DESERVES A REWARD. Track how much you've read, how many words you've learned, and how many fanfics you've explored. Unlock achievements as you read. All those hours of fanfiction finally pay off. LEARN EVEN WITHOUT WI-FI Your saved fanfics and vocabulary stay available offline. The app also includes built-in dictionaries for supported languages, so you can keep learning without an internet connection. MADE FOR READERS Tap "running" and save "run". Tap "ran" and it's the same word. No pile of duplicate cards for one verb. Saved words are underlined in the text. Green for the ones you've learned, red for the ones you're still studying. No cloud. No account. No subscription. Everything you save lives on your device. This app is not affiliated with Archive of Our Own (AO3) or the Organization for Transformative Works.