DataToolkit

DataToolkit is a professional data processing toolkit for analysts, developers and power users who work with structured data on the go.

All tools work fully offline. No internet connection required. No data leaves your device.

─── CSV VIEWER ───────────────────────────────
Import any CSV file directly from your device storage. DataToolkit parses the file instantly and displays it as a clean, scrollable table. Supports files up to 10,000 rows.

- Import via the system file picker (Storage Access Framework)
- Comma and semicolon delimiters supported
- Quoted fields with embedded commas handled correctly
- Live search across all columns simultaneously
- Tap any column header to sort — tap again to reverse
- Row numbers for easy reference

─── DATA SUMMARY ─────────────────────────────
After importing a CSV, get an instant statistical overview of every column — no formula entry required.

For each column:
- Column type detected automatically (Numeric or Text)
- Minimum, maximum, average, sum — for numeric columns
- Unique value count
- Empty (null) cell count

─── CHARTS ───────────────────────────────────
Visualise your data with three interactive chart types built with native canvas rendering — no third-party libraries.

- Bar chart — compare values across the dataset
- Line chart — see trends and progressions
- Pie chart — understand proportional distribution

Select any numeric column and switch between chart types instantly. Charts animate on load.

─── JSON FORMATTER ───────────────────────────
- Format raw or minified JSON with proper indentation in one tap
- Minify back to a single line
- Full syntax highlighting: keys, strings, numbers, booleans, null
- Live validation with exact error message
- Statistics: byte size, nesting depth, key count
- Copy result to clipboard in one tap

─── PRIVACY & SECURITY ───────────────────────
- Zero internet permissions
- No analytics, no tracking, no ads
- No account required
- All processing happens on your device
- Files are opened read-only — your data is never modified

Download DataToolkit and turn your phone into a portable data workstation.