Clean data. Clear results.
Zero hassle.
Simple Survey Data Cleaner (SSDC) is a free, simple alternative to heavyweight data-cleaning, data-management and statistics software — built for surveys, made for humans.
Open SSDC web appno download, no installationRuns entirely in your browser — nothing to sign up for, nothing to configure.
Clean with confidence
A live warnings system flags impossible values, unlabelled categories and suspect dates. Hunt down duplicate cases, detect statistical outliers, and fix repeated typos in one pass.
Manage real survey data
Typed variables, value labels, multiple-response sets and computed scores. Import and export CSV, hand data to collaborators as one tidy file — or password-encrypt it first.
Analyse without ceremony
Frequencies, crosstabs, t-tests, ANOVA, correlation, regression and more — presented as clean report cards you can rerun anytime or export as Markdown, CSV or R scripts.
Private by design, simple on purpose
SSDC is a single HTML file with no server behind it. Open it, and everything — your data, your analyses, your saved projects — stays on your machine. Save the file and it keeps working offline, anywhere.
- No account, no upload. Nothing is sent anywhere, ever.
- Gentle learning curve. If you can use a spreadsheet, you can use SSDC.
- Strong encryption built in. Share password-protected project files (AES-256).
- Plays well with others. Export to CSV or R when you outgrow it.