What's New
- Structure Search: Draw molecules directly in ChemSearch and search PubChem by exact, similar, substructure, or superstructure matching.
- Includes atoms, bonds, templates, charges, a periodic-table element picker, selection, dragging, undo/redo, import, export, and matching result dialogs.
- Advanced Search: Search with query type, include/exclude terms, molecular weight range, charge, 3D availability, and GHS availability.
- Periodic Table: New library option. Browse all the 118 elements with group/period layout and access full details about them.
- Includes electron shells, short and full electronic configuration, physical properties, spectral lines, summaries, and source links.
- More Compound Information: Compound pages can show uses, occurrence notes, classification, XLogP, polar surface area, exact mass, hydrogen bond counts, and rotatable bond count.
- Random Compound: Clicking the dice button on main search page will open search result of a random compound out of over 123M compounds in PubChem.
- New Tools:
- Empirical Formula Finder
- Precipitate Predictor
- Library Compare Selection: Select favorites, downloads, substances, or ions and compare two or more compounds.
- Library Backup: Import and export saved Library data.
- About And Legal Pages: Added About, Privacy Policy, Terms of Service, and Safety Disclaimer screens.
Improvements & Fixes
- Improved Isomer Search and moved it into the main search page from tools tab.
- Loads the first 20 results first.
- Adds a Show more button for larger isomer sets.
- Opens selected isomers back in the main compound page.
- Uses the same search animation style as the main compound lookup.
- Improved condensed formulas for ionic and complex compounds, including bracketed formulas where useful.
- Improved Chemical Database formatting with subscript/superscript support and tap-to-copy behavior.
- Removed duplicate copy buttons from Chemical Database cards.
- Limited database comparison to substances and ions only.
- Redesigned Recent Searches with cleaner rows, separators, pin controls, and delete actions.
- Improved 3D viewer controls and removed the overlapping PubChem conformer pill.
- Replaced icon-based GHS symbols with official GHS pictogram artwork.
- Added transitions to the Welcome screen.
- Updated README screenshots with the current app UI and organized them into collapsible sections.
Technical Changes
- Enabled minify and resource shrinking for release builds (Huge app size drop from the pervious build)
- Added source-backed modules for advanced search, structure search, PubChem extras, periodic element data, condensed formulas, empirical formulas, solubility prediction, Library backup, and Library selection.
- Added official GHS pictogram assets and the Wikipedia logo asset.
- Added tests for advanced search, condensed formulas, empirical formulas, Library backup, Library selection, PubChem extras, SDF fallback, solubility prediction, structure search sketches, periodic table behavior, 3D viewer behavior, and main screen behavior.
- Updated README documentation and screenshots for the current release.
Known Bugs
- Chemical database is not working; all categories are empty.
- When viewing Favorited/Downloaded compounds, the app suddenly crashes.