ChemSearch বিশ্বকোষ অ্যাপ জন্য Android বর্ণনা
This is the native Android version of the original ChemSearch webapp, rewritten in Kotlin with Jetpack Compose.
Features
Search
- Search by common name, IUPAC name, CAS number, or CID via PubChem PUG REST
- Real-time autocomplete suggestions as you type, with a scrollable dropdown (toggleable)
- Recent searches tab to access recently searched compounds.
- Favorites tab with filtering, A-Z and atom-count sorting, and manual reordering.
Compound Data
- Compound header showing name, molecular formula, molecular weight, CID and CAS at a glance
- Full identifiers card: IUPAC name, SMILES (full and connectivity), InChI, InChIKey, empirical formula, and formal charge (tap any value to copy).
- Info tooltips on each card explaining what each identifier or data type means
- Up to 8 synonyms displayed as chips
- Elemental analysis with mass percentage bars for each element
- Tap the formula to jump into the Isomer Finder
Structure Viewer
- 2D structure via PubChem PNG images with tap-to-zoom
- 3D model using a fully native Canvas-based engine:
- Drag to rotate, pinch to zoom, auto-spin with pause on touch
- CPK coloring for all 118 elements
- Ball-and-stick model with bonds connected to atom surfaces
- Download 2D PNG or 3D SDF files directly to Downloads
Safety Information
- GHS classification fetched from PubChem PUG View:
- Signal word badge (Danger / Warning) with color coding
- GHS pictograms (GHS01 through GHS09) with icons and labels
- Hazard H-codes
Descriptions
- Three switchable sources per compound:
- PubChem for scientific descriptions
- Wikipedia for general summaries
- AI via Google Gemini or Groq, with a regenerate button. This is totally optional and it requires your API key from these providers to work.
Tools
- Eleven chemistry tools accessible from the Tools tab:
- Custom 3D Molecule Viewer: Load any .sdf or .mol file from your device and view it in the native 3D engine
- Molar Mass Calculator: Enter any molecular formula (including parentheses groups and hydrate dot notation) to get the molar mass and a full elemental breakdown by mass percentage
- Oxidation State Finder: Determine oxidation states for each element in a compound, with support for peroxides, superoxides, ozonides, metal hydrides, and interhalogen compounds. Enter the overall charge for polyatomic ions
- SMILES Visualizer: Paste any SMILES string to look it up on PubChem and view its 2D structure and 3D model
- Reaction Balancer: Balance any chemical equation using matrix-based Gaussian elimination with exact rational arithmetic. Includes quick-insert buttons and swap-sides control
- Isomer Finder: Find up to 20 structural isomers by searching with a molecular formula
- Limiting Reagent: Identify limiting reagent, ratios, and theoretical yield for a balanced equation
- Percent Yield: Compare actual yield against theoretical yield for a target product
- Reaction Scaling: Scale reactants for a desired product amount
- Dilution Calculator: Solve C1V1 = C2V2 for solutions
- Ideal Gas Law: Solve PV = nRT for gases
- Tool categories include scrollable filter pills and manual tool reordering.
Customization
- Theme mode dropdown (Light / Dark) in Settings
- Configurable default description source
- AI provider selection with per-provider API key management
- Autosuggestions toggle (scrollable dropdown, toggleable)
Updates and Cache
- Built-in update checks against GitHub releases, with optional notifications
- Local compound cache to speed repeat searches, with clear + custom location controls
- Cached results are labeled in the UI
Developer Options
- A hidden debug menu can be unlocked by tapping the build number in the About card five times. It includes:
- Live log viewer: Real-time in-app log buffer (up to 200 lines) capturing search events, API calls, errors, SDF loads, and more, with timestamps. Errors always captured; verbose logs toggle-gated
- Verbose logging toggle: Writes detailed D/ChemSearch lines to Logcat and the live buffer
- SharedPreferences inspector: Dumps all stored keys and values (API keys partially masked)
- Memory info: JVM heap usage and system RAM from ActivityManager
- API endpoints: Copies all five base URLs to clipboard for manual testing
- Wipe SharedPreferences: Completely reset all the stored data
- Force crash: Throws a deliberate unhandled exception to verify crash reporting (confirmation required)
- Hide debug settings: Relock the developer menu until the next 5-tap unlock
