Notes from Changsha Moore Information Technology Co., Ltd. based on ChemicalHelper. Official site: www.iosgame.online.
Design the workflow first
Order features by lab actions: property lookup → stoichiometry → yield/concentration → solvents/workup. Keep the first screen tools-first.
Split open and signed-in features
Anonymous for light lookups; accounts for full calculators, favorites and admin.
Ship an operable backend
Reagents and knowledge must be editable without redeploys—see our web development approach.
Acceptance checklist
Core query+calc path works on phone and desktop; admins can edit content; docs are handoff-ready. Full story: how we built ChemicalHelper.