• Uppercase headings and labels now follow the app language correctly (for example, the Turkish dotted İ). • Small fixes and improvements.

• Fixes an issue that could prevent the app from opening on iOS 27. • Cell culture: the Doubling tab and saved history entries now appear in your language.

Small fixes and improvements.

• If the store doesn't allow purchases on your device or account, the Pro screen now gets straight to the point and keeps “Restore purchases” within easy reach. • Updated privacy policy: it now states exactly where your account data is stored. • Small fixes.

Account sign-in and cloud sync now run on our own infrastructure for better reliability. Small fixes and performance improvements.

Notebook limits now behave the same everywhere, and clearer help when the store blocks a purchase. • The free notebook limit is now applied consistently across every way an entry is created, including timer results and Experiment Assistant reports. • If the store refuses purchases on your device or account, the app now explains what to check instead of asking you to retry something that cannot succeed. • Reliability fixes around prices, purchases and restoring your subscription.

Lighter ad loading and reliability fixes. • Ads are now requested only when one is actually about to be shown — less background data and battery use. How often you see an ad has not changed. • Reliability fixes around store prices, purchases and restoring your subscription.

• If something goes wrong during a purchase you now see a message explaining why, instead of a silent failure. • When a translation is missing, the screen shows English text instead of a raw label. • Improved notification relevance and timing. • Minor fixes.

• The keyboard no longer covers the field you are typing in: tapping an input scrolls it into view so you can see what you type. • A short one-screen intro now explains what the app does on first launch. You can skip it at any time. • The notification permission is asked after you have actually started using the app, not at launch. • Removed the unused microphone and location permissions. • Colour contrast in the dark theme now meets the accessibility threshold.

• Reworked the ad experience; iOS and Android now follow the same rules. • Rewarded ads can now unlock more single results per day. • Stability improvements.

Three fixes. • Cancelling Google sign-in no longer shows an error. Changing your mind is not an error. • Safety information now appears where you need it: pick a hazardous chemical and the GHS hazard statement and protective equipment show up next to the calculation, with a link to the full safety data sheet. • The “enjoying the app?” prompt now waits until you have actually used ChemBioCalc, instead of appearing after a few launches.

Your lab notebook now syncs across devices, and you can see exactly what is being synced. • On a free account your latest 20 notebook entries travel to all your devices. When you reach the limit the notebook screen tells you — nothing is deleted, those entries simply stay on this device. Pro syncs all of them. • You can now save calculations on chembiocalc.com too and find them in your history on your phone. Also improved measurement in the export flow.

Two new lab tools: • Buffer preparation — from your target pH and pKa it gives the acid/base ratio, both component concentrations and the masses to weigh. Henderson–Hasselbalch, with references. It warns you when you move away from the pKa, so a recipe with no buffering capacity is never presented as ready. • HPLC mobile phase — works out the organic, buffer-stock and water volumes, and asks explicitly whether your buffer concentration refers to the total or the aqueous phase. At 60% organic that distinction is a 2.5-fold difference and is the most common reason a transferred method fails to reproduce. Also: you can now restore your purchases directly from the subscription screen, so moving to a new device brings your subscription back in one tap.

Your Pro subscription now works on the web too. • Sign in under Settings, and the Pro calculators on chembiocalc.com open with the same account — no second purchase. • Purchase problems no longer fail silently: you see what went wrong, with a clear way to retry or restore. • Reliability fixes around price loading and subscription state.

Your lab notebook now syncs across devices — only with your permission. • Optional account and cloud sync. Notes you wrote before signing in are never uploaded without asking you first — the app tells you how many records are affected and lets you decline. • If the same note changed in two places, both versions are shown side by side and you choose which to keep. Nothing is overwritten silently. • Experiment Assistant is now on the home screen: run a study step by step, from setup to report. • Reaching the free notebook limit now shows your options instead of a dead end. • Many calculation accuracy corrections across chemistry, pharmacy and molecular biology tools, each backed by a cited source. • Fixes: missing labels on some screens, an ad icon that never appeared, and older notebook records that could break search and delete.

Accounts and cloud sync are here. - Optional account: sign in with email, Apple or Google. The app still works fully without one. - Cloud sync: your lab notebook, calculation history and validation projects stay in sync across your devices. - Free tools are now listed first in the menu, so you reach them faster. - Delete your account and all synced data any time from Settings > Account. - Stability and performance improvements.

A bold new ChemBioCalc • Stunning redesign — a brand-new app icon, a cleaner home with color-coded Chemistry, Biology & Pharmacy portals, and smoother navigation everywhere • Faster & lighter across all 60+ pro-grade lab tools • From the live titration simulator to method validation, HPLC planning and DoE — your whole lab, reimagined Same trusted science. A brand-new feel.

- Redesigned home screen with clean discipline portals - Refined card design and typography across all hub screens - Bug fixes and stability improvements

• Watch a short ad to unlock any result for free — no subscription required • Cleaner "explore first, unlock the result" flow with clear PRO labels on premium tools • Home screen refinements • Bug fixes and performance improvements

• One-tap navigation: every tool now opens directly — nested menus removed. • Solutions now lists its modes up front: molarity, dilution, %w/v, ppm, buffer (pH), osmolarity. • Pro tools appear inline next to their free counterparts in each discipline. • Smarter search jumps straight to the right calculator. • Performance and stability improvements.

• Streamlined menus and navigation — Chemistry, Pharmacy, and Molecular Biology Pro tools are now easier to find and better organized. • Refreshed home screen that highlights featured Pro tools. • Tap any abbreviation to see its definition. • Fewer, less intrusive ads. • Performance and stability improvements.

• New module — Design of Experiments (DoE) · Chemometrics · RSM: Full/fractional factorial, Plackett-Burman screening, CCD and Box-Behnken; a step-by-step wizard with ANOVA, factor-effect ranking and response-surface optimization + exportable run sheets. • Dilution is no longer molarity-only: Choose concentration units (M, mM, µM, nM, N, g/L, mg/mL, %, ppm) and volume units (mL, L, µL). • More reliable Lab Notebook: Entries (especially with photos) are no longer lost; clearer warnings for photo and entry limits. • Tappable abbreviations everywhere: Tap any abbreviation to see its definition. • Easier to reach us: Website and support/suggestion emails surfaced in-app. • Gentle "rate us" reminder and an improved notification-permission flow. • Various bilingual (EN/TR) improvements, bug fixes and performance polish.

• Redeem promo codes right inside the app (Settings → Redeem Code) • HPLC Sequence Builder: export as Excel (.xls) in addition to CSV • Molecule Viewer: export the exact 2D or 3D view in high resolution; smoother 3D rotation • All PDF reports now print in A4, with a citation block on every report (including single-model isotherm & kinetics) • Clearer Kinetics & Arrhenius tools — added explanations and tappable scientific terms (k, T, Eₐ, A, R) • Full Turkish / English across every tool, module name and search • Smoother back navigation; removed intro pop-ups • Optional notifications for new tools, lab tips and updates • Stability, polish and performance improvements

1.3.1 is here! NEW • Abbreviation Glossary — 105+ terms, tappable explanations • In-app announcements & push notifications • Molecule PNG/PDF export • Automatic citation block in reports • support@chembiocalc.com IMPROVEMENTS • Tappable abbreviations across all modules • Scientific notation (Cₘₐₓ, R², t₉₀) fixed • Stability: Arrhenius+Shelf Life merged • Premium screen redesigned Feedback: feedback@chembiocalc.com

Version 1.3.0 - Professional Pro Tools NEW PRO MODULES - Method Validation Suite (ICH Q2(R2) + EMA M10): Linearity, Accuracy, Precision, LOD/LOQ, Robustness, Stability - analyst commentary and next-step suggestions in each section - NGS Coverage Calculator: Lander-Waterman + Poisson uniformity, WGS/WES/Panel/ctDNA presets, cost estimation - 2-Compartment PopPK: IV bolus/infusion analytical solution, alpha/beta half-lives, AUC, Vss + population variability simulation (log-normal eta) - Multi-Component UV-Vis: N-component mixture analysis, Beer-Lambert matrix solve, conditioning warning - HPLC Method Transfer: USP 621 geometric scaling, plate count and pressure predictions - HPLC Column Selector: HSM (Hydrophobic Subtraction Model) based phase recommendation REDESIGNED HOME - 8 logical hub categories (Solutions, Reactions, DNA/RNA, Microbiology, etc.) - Compact card design - 46% less cluttered - Favorites system - Recently used strip - Enhanced search (find by terms like ICH, PCR, NGS) USER EXPERIENCE - Redesigned Pro upgrade screen: feature highlights and savings calculator - Improved ad experience: silenced during timer/alarm, 2-minute minimum cooldown, first 60-second grace period - Haptic feedback - Pull-to-refresh - Lab Notebook stats indicator (total, this week, photos) - Settings: Premium status card CRITICAL BUG FIXES - Decimal comma now correctly parsed on European keyboards - Molar mass parser: Ca(OH)2, K3[Fe(CN)6], hydrates (CuSO4 5H2O) now correct - Periodic table: 26 elements expanded to 100 - Verified with 119 mathematical tests SUPPORTED STANDARDS ICH Q2(R2), EMA M10, USP 621, Henderson-Hasselbalch, Lander-Waterman