What is this?
Randatum is an offline-first desktop random data studio. All computation happens locally on your computer—no internet, no data upload. Generate random numbers and colors with one click, batch-produce structured test data, perform scientific randomization with standard methods, and keep reproducible records for every run.
Key Features
Quick Random
Random numbers (range/step/exclude/dedupe/sort/seed) and random HEX color palettes in one click.
Data Studio
17 field types, batch generate structured test data, with data corruption, preview, column stats, and multi-format export.
Scientific Randomization
Simple/block/stratified grouping, SRS/stratified sampling, repeated simulation, export reproducible research packages.
Reproducible Engine
Powered by Philox4x32-10 random source. Fix a seed and reproduce the exact same results every time.
Template Library
Save generation schemes as reusable templates. Import/export support.
Fully Offline
No login, no internet required. All generation and export happens locally. Your privacy, guaranteed.
Pricing
All Features Free
Free
- All 17 field types and statistical distributions
- Every export format: CSV / TSV / JSON / JSONL
- Simple / block / stratified grouping and sampling, repeated simulation
- Full reproducibility packages and fixed-seed metadata
- No subscription, no in-app purchase, no account