# LabCalcPro — Precision dilution calculator > Precision dilution calculator (iPhone/iPad app by Matthew Fishman.) - Source: https://appshunter.io/ios/app/labcalcpro/id6758917693 (this page in markdown: same URL + `.md`) - Developer: [Matthew Fishman](https://appshunter.io/developer/1838052729) - Category: Education, Utilities - Price: Free (on sale, was $7.99) - Age rating: 4+ - Requires: iOS 15.1 · 42 MB - Languages: American English - Released: 2026-02-12 - Data updated: 2026-05-17 - User reviews in markdown: https://appshunter.io/ios/app/labcalcpro/id6758917693/reviews.md ## What is LabCalcPro? 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. ## Version history (last 5 releases) ### 2.0.0 — 2026-02-26 What's New in 2.0.0 LabCalcPro is now free to download with a 3-day full-access trial. After the trial, unlock lifetime access for a one-time $5.99 purchase. • Fixed an issue where custom pipette settings were not loading correctly. The calculator now respects your saved pipette configuration. • Fixed Reset behavior so it no longer reverts pipettes to defaults. Your configured pipettes are preserved. • Improved pipette settings editing. Numeric fields now validate on blur, allowing easier value entry and correction. • New: Tap pipette chips in "Your Tools" to quickly enable or disable individual pipettes for a calculation — no need to open Settings. ### 1.2.1 — 2026-02-19 What’s New in 1.2.1 • Fixed an issue where custom pipette settings were not loading correctly. The calculator now respects your saved pipette configuration. • Fixed Reset behavior so it no longer reverts pipettes to defaults. Your configured pipettes are preserved. • Improved pipette settings editing. Numeric fields now validate on blur, allowing easier value entry and correction. • New: Tap pipette chips in “Your Tools” to quickly enable or disable individual pipettes for a calculation — no need to open Settings. ### 1.2.0 — 2026-02-18 What's New • Saved Solutes — Save and recall your go-to molecular weights in Mass ↔ Molarity mode. Tap the bookmark icon next to the MW field to get started. • Smarter Serial Dilutions — The dilution planner now supports 3-stage serial dilutions for extreme concentration ratios, automatically choosing the fewest stages needed. • UI & stability improvements throughout. ### 1.1.0 — 2026-02-15 v1.1.0 — Molarity ↔ Mass LabCalcPro now supports mass-based solution preparation. New • Molarity ↔ Mass mode — Calculate the mass of solute needed from concentration and volume, or compute resulting molarity from a measured mass. • Mode selector — Switch between Dilution and Mass ↔ Molarity at the top of the calculator. • Weighability-aware rounding — Mass outputs reflect typical analytical balance precision. • Show Math expansion — Full derivation with formula, substitution, and clear display precision notes. • Bench Mode support — Screen stays awake with protocol steps and preparation assumptions. • Save & Load — Mass ↔ Molarity calculations can be saved and restored like dilution protocols. Improvements • Refined step wording for clarity and brevity. • Improved separation of computed results and display precision in Show Math. ### 1.0.0 — 2026-02-12 No release notes. ## More apps by Matthew Fishman - [PepCalc Pro](https://appshunter.io/ios/app/pepcalc-pro/id6757834926) All apps by Matthew Fishman: https://appshunter.io/developer/1838052729 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-05-17.*