ChemSearch

about

description

ChemSearch is an open-source chemistry reference and utility app for Android. Search compounds, inspect structures, browse offline references, and use practical chemistry tools all in one place. SEARCH Search PubChem by name, CAS number, formula, CID, or structure. Includes autosuggestions, spelling matches, caching, and specific error diagnostics. Advanced Search filters by elements (included/excluded), molecular weight, charge, 3D data, GHS hazards, and name text. Result pages provide identifiers, structures, safety data, synonyms, and summaries with tap-to-copy actions. STRUCTURE & ISOMER SEARCH • Structure Search: Draw molecules with atoms, bonds, charges, and templates. Search PubChem for exact, substructure, superstructure, or similarity matches. Import/export SMILES, InChI, and MOL files. • Isomer Search: Search compounds by molecular formula. View molar mass, atom counts, and degrees of unsaturation. Sort by relevance or name. PERIODIC TABLE Browse all 118 elements with category filters, shell diagrams, physical properties, and spectra. Interactive heatmaps display trends for electronegativity, atomic radius, ionization energy, density, melting point, and boiling point (in K, °C, or °F) with top-five rankings. CHEMICAL DATABASE Offline database with 575 substances, 108 ions, 71 functional groups, and 149 reactions. Covers acids, salts, oxides, ores, polymers, amino acids, vitamins, alkaloids, drugs, esters, organometallics, and silicates. Search by name, alias, or formula. CHEMISTRY TOOLS Includes 15 tools for calculations and reference: • Molar Mass Calculator • Empirical Formula Finder • Oxidation State Finder • pH / pOH Calculator • Reaction Balancer • Precipitate Predictor • Reaction Predictor (predicts products, equations, and observations offline) • Limiting Reagent • Percent Yield • Reaction Scaling • Dilution Calculator • Ideal Gas Law • SMILES Visualizer • 3D Molecule Viewer • Compare Compounds (compare up to 6 substances) Stoichiometry tools calculate reagent consumption, leftovers, and atom economy. LIBRARY & RECENT SEARCHES Save compounds as Favorites or Downloads (Basic, Structures, or Complete) for offline use. Long-press to copy formulas, open in PubChem, or delete. Export and backup library data via CSV or JSON. Search history supports pinning, sorting, and grouping. HOME SCREEN & WIDGETS • Compound of the Day: Daily compound card with formula and typical uses. • Widgets: Compound of the Day and Random Compound (with refresh button). • Shortcuts: App-launcher shortcuts to Search, Library, Tools, and Settings. • Explore: Quick access to Structure Search, Isomer Search, Periodic Table, and Database. DISPLAY & OPTIONAL AI • Themes: Light, Dark, AMOLED true-black, 5 color accents, and card or flat layouts. • Optional AI: Fetch compound summaries via Google Gemini, Groq, OpenAI, OpenRouter, or Mistral AI using your own API key. • Preferences: Configurable temperature units (K, °C, °F), haptics, and cache controls. LOCALIZATION Available in 16 languages: Bengali, Danish, German, Greek, English, Spanish, Finnish, French, Italian, Japanese, Dutch, Norwegian, Polish, Portuguese, Russian, and Swedish. DATA, PRIVACY & LICENSE • Free and open source under the MIT License. • No account, analytics, tracking, or app backend. Data stays on your device. • Network access is only used for external queries (PubChem, Wikipedia, or configured AI). • For study and reference only; consult official SDS for laboratory work.

publisher

78ce6faa72264387284e647ba6938995735ec8c7d5c5a65737e55130f026307d

first seen

2026-10-08T00:15:38.344391+00:00

last event

2026-10-16 19:49 UTC

install

zapstore.dev or any Zapstore-compatible client

topics

#science & education

source & build

repository

https://github.com/furthersecrets24680/chemsearch-android

arch flags

android-arm64-v8a android-armeabi-v7a android-x86 android-x86_64

manifest

missing

releases (kind 30063)

3 releases indexed; latest 1.16.0.

version	channel	released	event
1.16.0	main	2026-10-16 19:49 UTC	46ed6c09…
1.15.0	main	2026-10-08 18:25 UTC	2082c422…
1.14.0	main	2026-08-15 10:46 UTC	8d43418c…

assets & verification

Every app, release and asset event is schnorr-verified (NIP-01 id + signature) before it enters the catalog, and assets are content-addressed by sha256. We subscribe read-only to the catalog relay — never write to it.

1.16.0 — ChemSearch.v1.16.0.apk

sha256

4f0552d23aa31b52d6e2dae2afe338bf8b1c2d2e6947aa4ebb3ef0b2b4081597

size

5.9 MB

archs

android-arm64-v8a, android-armeabi-v7a, android-x86, android-x86_64

version code

11600

apk cert sha256

43614e851a7f1c78f80f7f5299f7a2a27f1aee3f07a53a160e5d93f9ae501f00

download

ChemSearch.v1.16.0.apk

1.15.0 — ChemSearch.v1.15.0.apk

sha256

888b5335ebbe62551da050ae89c19e012626e6793122b3068b278c5d5518d642

size

5.8 MB

archs

android-arm64-v8a, android-armeabi-v7a, android-x86, android-x86_64

version code

11500

apk cert sha256

43614e851a7f1c78f80f7f5299f7a2a27f1aee3f07a53a160e5d93f9ae501f00

download

ChemSearch.v1.15.0.apk

1.14.0 — ChemSearch.v1.14.0.apk

sha256

ba38248bff29f7ad1ac25815e0702669ef6826ca3056d7dab63785a3d47202c3

size

5.3 MB

archs

android-arm64-v8a, android-armeabi-v7a, android-x86, android-x86_64

version code

11400

apk cert sha256

43614e851a7f1c78f80f7f5299f7a2a27f1aee3f07a53a160e5d93f9ae501f00

download

ChemSearch.v1.14.0.apk

Showing the newest 3 asset descriptors; the full set is in /api/apps/78ce6faa…