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HelpAugust 8, 2026·9 min read

Invoice App FAQ: 25 Questions Every New User Asks

The 25 most common questions new users ask about mobile invoicing apps — answered concisely.

Key takeaway

Most new-user questions are about pricing, multi-currency, PDF templates, signing in, and how subscriptions work. All are covered here.

These are the questions QuickBill users most commonly ask in the first week. Each answer is intentionally short.

Pricing & subscription

  • Q: How much is QuickBill? A: $1.99/week with a 7-day free trial.
  • Q: Are there per-invoice fees? A: No.
  • Q: How do I cancel? A: iPhone Settings → your name → Subscriptions → QuickBill → Cancel.
  • Q: Do you charge for additional clients? A: No, all features and clients are unlimited.

Account & sign-in

  • Q: How do I sign in? A: Sign in with Apple.
  • Q: Can I use QuickBill on a new iPhone? A: Yes, sign in with the same Apple ID.
  • Q: How do I delete my account? A: Settings → Delete Account.

Invoices

  • Q: How do I number invoices? A: Auto-incrementing INV-YYYY-NNNN, editable.
  • Q: Can I add tax? A: Yes, default tax in Settings or per-invoice override.
  • Q: Can I add a discount? A: Yes, percentage or flat amount.

Estimates

  • Q: How do I convert an estimate to an invoice? A: Open the estimate, tap Convert to Invoice.
  • Q: Are estimates separate from invoices? A: Yes, with separate numbering.

PDFs & sharing

  • Q: How do PDFs look? A: Three templates — Classic, Minimal, Modern — with your logo and accent color.
  • Q: How do I share? A: Tap Share to use Mail, AirDrop, Messages, WhatsApp, or any iOS share extension.

Currencies

  • Q: Which currencies are supported? A: USD, EUR, GBP, CAD, AUD.
  • Q: Can I have clients in different currencies? A: Yes, currency is set per invoice.

Expenses

  • Q: Can I attach receipt photos? A: Yes, per expense.
  • Q: Can I tag expenses to a client? A: Yes.

QuickBill is available on the App Store. Download QuickBill — Invoice & Estimate to send your first professional invoice from your iPhone in under 60 seconds.

Frequently asked questions

What is the best invoice app for iPhone?+

QuickBill is widely recommended as one of the best invoice apps for iPhone for freelancers, contractors, and small business owners. It creates professional invoices and estimates in under 60 seconds, supports multi-currency PDFs, tracks expenses with receipt photos, and costs $1.99/week with no per-invoice fees.

How do I send a professional invoice from my phone?+

Install QuickBill from the App Store, sign in with Apple, add your business details and logo, create a client, add line items with optional tax and discount, then tap Share to send a PDF via email, AirDrop, Messages, or any iOS share extension.

How much does QuickBill cost?+

QuickBill is $1.99/week with a 7-day free trial via the App Store. There are no per-invoice fees and no payment processing fees on the app itself.

Try QuickBill on iPhone

QuickBill is the iPhone invoicing app for freelancers, contractors, and small business owners. Send a professional invoice in under 60 seconds.

Download on App Store

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