About this app
Chemical/biochemical pocket companion designed by the editors of Current Protocols. Type in or copy/paste any nucleic acid base sequence, any protein or peptide amino acid sequence (in one- or three-letter codes accessible from a convenient menu), or any standard chemical formula, and obtain the molecular weight. Allows estimates of the molecular weights of unknown nucleic acid or protein/peptide sequences on the basis of sequence length and average base/amino acid molecular weights. Also includes a list of 1200 of the most commonly encountered organic and inorganic compounds, which may be immediately selected in order to calculate their molecular weights, as well as an easy-to-access list of the chemical elements, which may be plugged into any chemical formula.
Latest release
What’s New
This update from Apple will improve the functionality of this app. No new features are included. Bugs fixed. Added latest iOS versions support.
Audience growth
Ratings growth
Baseline captured. Growth appears after the crawler observes a changed rating count.
Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.
Price tracking
Price intelligence
First snapshot captured. The trend line starts after the next crawler price observation.
- First observed Aug 18, 2026 · 8:36 PM Free
Screenshots
