Bookstacks is a simple iOS app for managing your book collection.
Scan any ISBN barcode to register a book ā title, author, and cover image are fetched automatically via the OpenBD API. No account needed; everything stays on your device.
Key features:
⢠ISBN barcode scanner + manual entry
⢠Auto-fetch book metadata and cover images
⢠Organize books with custom labels
⢠Set covers from camera or photo library
⢠Search your entire shelf instantly
⢠Available in English and Japanese
See where your money will be in 10ā30 years.
Enter income, expenses, investments, and loans ā the app projects your monthly net worth using compound interest.
⢠Net worth chart (assets, cash, investments, debt)
⢠Annual & monthly view + detailed data table
⢠Loan repayment calculated per item
⢠Multi-currency: JPY / USD / EUR
⢠Save & switch between multiple scenarios
⢠Inflation & wage growth rate settings
⢠Dark mode · EN/JA
Eliminate the anxiety of "Did I do that?"
Tap once to log your routine with a timestamp. Auto-resets on launch ā zero maintenance.
⢠1-tap completion with timestamp
⢠Auto-reset daily
⢠Flexible repeat: daily / every N days / specific weekdays
⢠Up to 10 completions/day with progress count (e.g. 2/3)
⢠Calendar history with completion times
⢠Smart reminders + incomplete task alerts
⢠Dark mode · EN/JA