Small, honest utilities from The Plain Manual team. No accounts, no uploads, no catch — every tool runs entirely in your browser.
🔒 Security & Privacy
Password Strength Checker
See how long your password would actually survive — with plain-English tips to make it stronger.
Check a password →Passphrase Generator
One click, a handful of random words, one password you can actually remember.
Generate passphrase →Password Breach Checker
Check if your password has appeared in a data breach — private by design.
Check a breach →🤖 AI Helpers
Which AI Should I Use?
Answer 10 quick questions; get a plain-English recommendation: ChatGPT, Claude, or Gemini.
Take the quiz →Is This AI Plan Worth It?
Five questions, one plain verdict on whether a paid AI plan earns its keep, or free is enough.
Get my verdict →💰 Money & Freelancing
Subscription Cost Calculator
List every subscription and billing cycle; see the true monthly cost — and the 10-year wake-up number.
Count my subscriptions →Invoice Generator
Fill in the blanks, download a clean PDF invoice. Built for freelancers who’d rather be working than formatting.
Make an invoice →Freelance Rate Calculator
Enter what you want to earn; get the hourly rate that covers unpaid weeks, expenses, and taxes.
Calculate my rate →1099 vs W-2 Calculator
Same gross pay, contractor vs employee: see the estimated take-home for each, in plain English.
Compare take-home pay →Compound Interest Calculator
See what your savings could grow to — deposits, monthly contributions, and rate, year by year.
Grow my savings →Hourly to Salary Calculator
Type an hourly wage or yearly salary — the other converts instantly, using your real schedule.
Convert my pay →⚡ Productivity
Meeting Cost Calculator
Enter attendees, pay rates, and duration. See what that meeting really costs.
Cost a meeting →How Much Cloud Storage Do I Need?
Enter your photo count and video hours; get a GB estimate and which storage plan tier fits.
Estimate my storage →Free QR Code Generator
QR codes for links, Wi-Fi, and contacts. No signup, no watermark, generated privately in your browser.
Make a QR code →