Tidysetdeterministic data janitor
Turn messy data into clean data — deterministically, offline.
Tidyset is a focused data-cleaning workspace for CSV, TSV, Excel and JSON: reviewable suggestions for whitespace, inconsistent labels and missing values, column profiling with histograms, clustering, formulas, global find & replace — and every action becomes a reversible, reusable recipe.
No black boxes. Every fix is a visible step.
Tidyset never guesses silently: it proposes fixes you review, shows a diff of what changed, and records every action as a step in a recipe you can undo, audit and re-run on next month's export.
What it does
Professional cleaning tools without the cloud.
The workflow of a data janitor, in one calm desktop app.
Reviewable smart suggestions
Whitespace, inconsistent labels, missing values and type issues — proposed, previewed, and applied only when you approve.
Column profiling
Distributions, histograms, uniqueness and null counts for every column at a glance.
Clustering and fuzzy matching
Group near-identical labels ('NYC', 'New York City', 'new york') and normalize them in one action.
Formulas and transforms
Derive columns, split and merge fields, and reshape data with visible, replayable operations.
Global find & replace
Across the whole dataset with diff highlighting before you commit.
A quality score dashboard
Watch the dataset's health improve as the recipe grows.
Inside the app
A workspace that shows its work.
The actual app: suggestions, profiling and the recipe timeline.
Smart suggestions
Each proposed fix with its impact, reviewed before it touches your data.
Column profiling
Histograms and stats that make outliers and gaps obvious.
The recipe
Every applied step, reorderable and undoable — your cleaning process, saved.
How to use Tidyset
Clean once, reuse forever.
Recipes make next month's messy export a one-click job.
Open the file
CSV, TSV, Excel or JSON — Tidyset profiles every column immediately.
Review suggestions
Approve the fixes you want; skip the ones you don't.
Clean the labels
Cluster near-duplicates and normalize them in one action.
Transform
Formulas, splits, merges and find & replace with previewed diffs.
Watch the score
The quality dashboard shows the dataset improving step by step.
Save the recipe
Export clean data — and keep the recipe to re-run on the next export.
Private by design
Your data never leaves the desk.
Tidyset is fully offline: no cloud processing, no account, no telemetry. Ideal for datasets you're not allowed to upload.
- Deterministic engine — no AI guessing at your values
- Diff highlighting before any change is committed
- Recipe = pipeline = undo one honest history of every step
- Column histograms and profiling on open
- Fuzzy clustering for label normalization
- No account, no cloud and no tracking of any kind
- Works on
- macOS (Apple Silicon)
- Formats
- CSV, TSV, Excel, JSON
- Cleaning
- Suggestions, clustering, formulas, find & replace
- Auditability
- Recipes with full undo and diffs
- Privacy
- Fully offline
Support the project
Support the project and download Tidyset.
Tidyset does what a careful analyst would do by hand — visibly, reversibly and a hundred times faster. Donate what you like to support the project and download the full app straight away. The download is the complete, fully activated app — every feature included. Each download link works once.
TidysetNative MacMessy in. Clean out. No cloud.
Get the software
Support the project and download a build.
Donate what you like, pick your product and your computer type, and download it right after checkout. You always receive the complete, fully activated app. Each download link works once and expires after a while.