Small Windows tools for messy files, CSV imports, and data cleanup. Built for Excel, pandas, and real-world workflows.
Tokyo, Japan
Joined March 2026
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Building small Windows tools for messy data.
First tool: CSV Import Doctor
Detect CSV import issues and export a cleaned CSV plus an HTML report.
eternalyr.gumroad.com/l/csau…
Today I’m building tools that turn repetitive manual tasks into a single click.
If it solves a real problem, impressions → sales will follow naturally.
A lot of CSV problems are not “data” problems.
They’re import problems:
- wrong encoding
- broken delimiters
- messy rows
Once you detect the actual cause, cleanup gets much easier.
What breaks CSV imports most often in your workflow?
Small CSV issues usually cost more time than people expect.
That’s exactly why I made this.
Messy CSV files can quietly break your workflow.
Encoding issues, wrong delimiters, broken headers —
those small problems waste more time than people expect.
I made a simple tool to diagnose CSV problems fast and keep the cleanup process easier.
eternalyr.gumroad.com/l/csau…
Messy CSV files can quietly break your workflow.
Encoding issues, wrong delimiters, broken headers —
those small problems waste more time than people expect.
I made a simple tool to diagnose CSV problems fast and keep the cleanup process easier.
eternalyr.gumroad.com/l/csau…
Pachislot data? Track CSV easily – diagnose encoding issues, headers, delimiters in seconds.
CSV Import Doctor (Windows EXE):
eternalyr.gumroad.com/l/csau…
#CSV #DataCleaning #Pachislot
Tired of broken CSV files?
CSV Import Doctor cleans messy CSV imports for Excel or pandas.
$5 on Gumroad: eternalyr.gumroad.com/l/csau…
Tired of broken CSV files?
CSV Import Doctor helps you detect import issues and export a cleaned file for Excel or pandas.
Made for messy exports, legacy files, and client data.
$5 on Gumroad: eternalyr.gumroad.com/l/csau…
Built CSV data analysis tools for slots/gambling data
Gumroad: CSV Import Doctor $9
eternalyr.gumroad.com/l/csau…
Full list (Japanese tools too) coming to note.com soon!
#DataAnalysis #CSVtools #SideHustle
🚀 Messy CSV imports? FIXED!
CSV Import Doctor:
✅ Clean ANY CSV to Excel/Sheets FAST
✅ Auto error detection
✅ Data analysts & traders LOVE it!
$9 Windows EXE 👉 eternalyr.gumroad.com/l/csau…
#CSV #DataAnalysis #Excel [cite:2]
Tired of messy CSV exports?
CSV Import Doctor fixes them in 1 click:
• Excel/Sheets ready format
• Skip copy-paste hell
• Windows exe
For data folks who hate manual cleanup.
Get it: eternalyr.gumroad.com/l/csau…
CSV imports breaking your files?
CSV Import Doctor quickly spots encoding issues, bad headers, wrong delimiters, and missing rows so you can fix everything before it hits Excel or Sheets.
Drag & drop → clean CSV out. Windows app, works offline.
eternalyr.gumroad.com/l/csau…
🚨 CSV import messing up your day?
**CSV Import Doctor** finds & fixes:
• Encoding errors • Wrong headers • Bad delimiters • Missing rows
Drag-drop → Clean file out. Windows exe, works offline + samples included.
Fix it now: eternalyr.gumroad.com/l/csau…
#CSV #Excel