DataMend removes duplicate rows, trims whitespace, standardizes dates, and transforms your data — no Excel formulas required.
✓ One-time purchase ✓ Windows, macOS, Linux ✓ 14-day money-back guarantee
| # | Name | Signup Date | Country | Revenue | |
|---|---|---|---|---|---|
| 1 | Alice Smith | [email protected] | 2024-01-15 | United States | 1,240.00 |
| 2 | Bob Jones | [email protected] | 2024-01-22 | Canada | 895.50 |
| 3 | Carla Reyes | [email protected] | 2024-02-03 | Mexico | 2,100.00 |
| 4 | David Kim | [email protected] | 2024-02-14 | South Korea | 450.00 |
| 5 | Eva Müller | [email protected] | 2024-03-01 | Germany | 1,780.00 |
| 6 | Frank Chen | [email protected] | 2024-03-08 | Hong Kong | 3,200.00 |
| 7 | (empty) | (empty) | (empty) | Australia | (empty) |
| 8 | Grace Park | [email protected] | 2024-03-19 | South Korea | 670.00 |
DataMend is focused on one thing: getting CSV data clean and consistent as fast as possible.
Common cleaning tasks — trim whitespace, remove duplicates, change case, fix dates — are a single click. No formulas, no macros, no hunting through ribbon menus.
Save your sequence of operations as a recipe file. Next week, when you get the same export, load the recipe and clean it in 5 seconds instead of 30 minutes.
Click any column header to instantly see: total rows, empty count, unique values, min/max/mean for numbers, most common values for text. Know your data before you clean it.
Every operation is non-destructive until you export. Step back through 50 operations. Explore changes freely without fear of breaking anything.
Your data stays on your machine. No cloud upload, no account required, no internet connection needed. Works on air-gapped machines. Safe for confidential data.
DataMend automatically detects UTF-8, Latin-1, Windows-1252, and other encodings. Open that "broken" export without manually converting first.
Clean Salesforce or HubSpot exports before importing into reporting tools. Standardize date fields, normalize company names, remove test records.
Normalize bank transaction exports before importing to accounting software. Standardize date formats, clean vendor names, remove duplicate transactions.
Clean client data in minutes instead of hours. Save operations as recipes and reuse them across similar projects. Bill your time on analysis, not cleanup.
Deduplicate contact lists before sending campaigns. Normalize country/city names, standardize phone formats, remove invalid email addresses.
Clean product catalog exports. Standardize category names, fix price formatting, remove discontinued SKUs, reorder columns to match import templates.
Quickly inspect and sanitize test data fixtures. Remove sensitive data, normalize values, split or merge fields to match API schemas.
No monthly fees. No "pro tier" upsell. Pay once, use forever.
Secure checkout via Gumroad. Instant download.
DataMend opens CSV and TSV files. It exports to CSV (UTF-8) and Excel (.xlsx). Opening Excel files directly is planned for v2.
Completely offline. DataMend runs entirely on your computer. No data is ever sent to a server. Safe for confidential, GDPR-regulated, or HIPAA-adjacent data.
Tested with files up to 1 million rows and 100+ columns. For very large files (5M+ rows), operations work on the full dataset but the preview is capped at 100,000 rows for performance.
A recipe is a saved sequence of operations stored as a small JSON file. For example: "trim whitespace → remove duplicates → standardize dates → rename column". Load it next week on a fresh export to apply the same cleanup in one click.
Windows 10/11, macOS 11+, and modern Linux distributions (Ubuntu 20.04+, Fedora 36+, Arch, etc.). No installation required — unzip and run.
14-day no-questions-asked refund. Email with your receipt and you'll get your money back within 24 hours.
All v1.x updates are included in the £13.99 purchase. v2 (if it happens) will be a discounted upgrade for existing customers.
Excel requires formulas for everything and has no recipe/replay feature. OpenRefine is powerful but browser-based, slow to start, requires Java, and has a steep learning curve. DataMend is purpose-built for speed: open, click, clean, export.
£13.99, one-time. 14-day guarantee. Works on Windows, Mac, and Linux.
Buy DataMend — £13.99 →Secure checkout · Instant download · Offline app