BSEC Options Calculator vs Monthly Bill Reminder Tracker

BSEC Options Calculator is a professional-grade financial tool that helps traders, investors, and finance professionals calculate theoretical option prices and risk metrics using the Black-Scholes model. The app supports both call and put options, allowing users to input key variables like underlying price, strike price, expiration date, interest rate, and volatility.

Never eat another late fee because a due date slipped your mind. BillDue is a bill reminder and due date tracker you fill in by hand — every bill and subscription, its amount, its repeat cycle — and from then on the app answers one question the second you open it: what is due next, and what does this month cost in total? No bank link. No account. You type a bill in once — rent, electricity, insurance, a streaming subscription — choose how often it repeats, and BillDue projects it forward: onto the dashboard, onto the calendar, into next month's total. Mark it paid in one tap and a recurring bill rolls to its next cycle on its own, while the payment lands in your archive instead of vanishing. WHAT YOU GET • "Electricity — due in 3 days" waiting at the top of the screen when you open the app, with this month's total right under it • Overdue bills surface in red above everything else, so a missed payment can never hide in the middle of a list • One tap marks a bill paid — recurring bills advance to the next cycle by themselves, and every payment is archived and charted month by month • Reminders that arrive before the money is late: several days ahead if you want, at the hour you choose, per bill — plus an extra nudge the day after if it is still unpaid • A month calendar showing every occurrence of every repeating bill, and a six-month projection of what is coming • Spending broken down by category, so you notice when subscriptions quietly became your third-biggest bill PERFECT FOR • Anyone who paid a late fee this year and refuses to pay another • Subscription collectors who want every renewal date and price in one list • Renters and homeowners juggling rent, utilities, insurance and phone bills that all land on different days • People who will not connect a bank account to a tracking app — everything here is typed in by you and stays on your phone WHY NOT JUST USE YOUR CALENDAR? A calendar event does not know the amount, cannot total your month, and will not roll a monthly bill forward when you pay it. A banking app tells you after the money has already left. BillDue is built around the days before the due date — the only days when a reminder still saves you money. PRIVATE BY DEFAULT Every bill lives on your iPhone. No sign-up, no cloud, no bank connection. The CSV and monthly PDF report are generated on the device and leave it only through the share sheet you choose. Bills you set to auto-pay are tracked in your totals but never nag you. FULL ACCESS BillDue Premium unlocks unlimited bills and the full payment history archive with monthly charts. Choose a weekly or yearly subscription, or a one-time lifetime purchase. Add your three most forgettable bills tonight — the first reminder lands before the next due date does. Terms of Use: https://leanstudio.asia/terms-of-use Privacy Policy: https://leanstudio.asia/privacy-policy Support: support@leanstudio.asia