Import your data

Paste a two-column table with a header row — copy straight from Excel, Google Sheets, or any tab or comma-separated source. Supports 10,000+ rows. Progress saves automatically and persists after closing the browser.

Tab-separated (Excel / Sheets) Comma-separated (.csv) First row = headers Two columns required
#

Configure session

0
Total
0
New
0
Due today
0
Mastered
Study direction
See left, recall right
Column A → Column B
See right, recall left
Column B → Column A
What to study
🧠
Smart
Due + new, spaced repetition
📚
All cards
Every card in the deck
💪
Struggling
Boxes 1–2 only
✨
New only
Unseen cards only
⭐
Starred
Cards you have flagged
🎯
Custom size
Set a session limit
Options

1/1
Recall the right column
Column A
—
tap to reveal
Column B
—
Press Enter to check · then tap a rating button or press Enter again to auto-rate
How well did you know this?
0
0
0

Session complete!

0
Recalled
0
Missed / Struggled
0
Skipped
Overall mastery
Progress
What the boxes mean
New
Not yet studied. Appears in Smart and New sessions.
Box 1 — Learning
Just introduced or recently missed. Reviewed after 1 day.
Box 2 — Familiar
Some recall forming. Reviewed after 3 days.
Box 3 — Consolidating
Recalled consistently. Reviewed after 7 days.
Box 4 — Strong
Nearly mastered. Reviewed after 14 days.
Box 5 — Mastered
Long-term memory. Checked again after 30 days.
By SIR