Free Tools

Free tools for your business

Genuinely useful utilities you can run right in the browser — free, no sign-up, and nothing leaves your device.

AHK Studios builds free online tools for businesses worldwide. Estimate what your app will cost to build, create a PDF invoice in any currency, add or remove VAT and GST for 30+ countries, create a ZATCA-ready Saudi tax invoice, or find a Muslim baby name with its meaning. Each tool runs in your browser, needs no account, and is free to use. They're built by the same team behind our custom mobile apps and web platforms.

App Cost Calculator

Estimate your build

Estimate what a custom mobile app or web platform will cost to build, by features, platforms and complexity. You get a cost range and timeline in your currency.

  • Instant estimate
  • iOS / Android / Web
  • Feature-based
  • Any currency
Open App Cost Calculator

Invoice Generator

PDF invoices · any currency

Create a professional invoice with your logo, items, discount and VAT/GST in 25+ currencies, then download it as a PDF. No sign-up, no watermark, and your draft is saved in your browser.

  • Your logo
  • 25+ currencies
  • VAT/GST presets
  • PDF, no watermark
Open Invoice Generator

VAT & GST Calculator

30+ countries · UK, EU, India, Australia, Gulf

Add or remove VAT or GST at the standard rate for 30+ countries, including the UK, EU, India, Australia, Canada and the Gulf, with a clear net, tax and gross breakdown.

  • 30+ country rates
  • Add / remove VAT
  • VAT & GST
  • Instant
Open VAT & GST Calculator

ZATCA Invoice Generator

Saudi e-invoice · فاتورة ضريبية

Create a ZATCA-ready Saudi VAT (tax) invoice in English and Arabic, with the Phase-1 Base64 QR code and 15% VAT calculated for you, as a clean printable PDF. Free, no sign-up, and your data never leaves the browser.

  • Bilingual AR/EN
  • ZATCA QR code
  • 15% VAT auto
  • Print / PDF
Open ZATCA Invoice Generator

Islamic Name Generator

Muslim baby names · أسماء إسلامية

Find a Muslim baby name from over 230 boy and girl names, each with its meaning and Arabic spelling. Filter by letter, language or Quranic names, and share a shortlist with family.

  • 230+ names
  • Meanings & Arabic
  • Quranic filter
  • Shareable shortlist
Open Islamic Name Generator