Cataly

TaprootSolutions

Contains adsIn-app purchases

About this app

Cataly is an offline-first digital lab notebook and calculator toolkit built for molecular biology and general chemistry work — in the classroom, the teaching lab, or the bench.

Switch between Bio and Chem mode with one tap, and the entire app — records, tools, and color accent — adapts to the science you're doing.

RECORD KEEPING
Track everything your lab generates with searchable, taggable records, including:
• Bio: samples, cell lines, plasmids, primers, strains, western blots, ELISA assays, flow cytometry, CRISPR edits, gel runs, sequencing submissions, and more
• Chem: reagents, stock solutions, titrations, spectra, synthesis routes, NMR/mass spec runs, calibration logs, SDS references, and more
• Shared: protocols, equipment, vendors, lab tasks, grants, notebook entries, storage locations, safety training, and more

Every record supports favorites, tags, archiving, CSV export, and one-tap sharing. A global search finds anything across every collection at once.

CALCULATORS
Dozens of built-in calculators handle the math so you don't have to:
• Molecular biology: primer Tm (basic & nearest-neighbor), GC content, reverse complement, ORF finder, restriction site finder, digest fragments, PCR product prediction, primer dimer & hairpin checks, oligo MW & extinction coefficient, codon usage, six-frame translation, PAM site finder, pairwise alignment, ddCt fold change, C1V1 dilution, and primer resuspension volume
• Chemistry: molar mass, percent composition, equation balancing, limiting reagent, pH/pOH & buffer/titration curves, ideal gas law, Beer-Lambert law, Gibbs free energy, significant figures, colligative properties, normality, first-order kinetics, Arrhenius equation, Nernst equation, Ksp/solubility, dilution factor, empirical formula from mass %, and a full periodic table with physical constants reference

DESIGNED FOR THE LAB
• Works fully offline — all data lives on your device, no account required
• Optional cloud sync scaffold for keeping records backed up (opt-in)
• Dashboard with due-soon reminders for lab tasks
• Light, dark, and automatic theme with adjustable text size
• Fast, native, distraction-free interface

Whether you're pipetting in a molecular biology lab or titrating in a chemistry classroom, Cataly keeps your records organized and your math correct — all in one app.

What’s new

v1.3.11: Ad-free. :)