Doorbook: Rent & Meters

Read meters, make bills, and generate payment QR (PromptPay / VietQR / KHQR or your own) — all on-device. 15 languages.

Doorbook is a rent-collection helper for dorm and apartment landlords. Everything runs on your device — no server, no account.

• Read water/electricity meters room by room; charges are calculated automatically • Create rent bills with a payment QR and send them to tenants on WhatsApp or LINE to scan and pay • Multi-country payments: PromptPay (Thailand), VietQR (Vietnam), KHQR (Cambodia), PIX (Brazil), SEPA/IBAN (euro zone), or upload your own QR (e.g. WeChat, Alipay, PayPay) • Pick your currency and default rates by country; 15 languages in-app • Monthly collection summary, revenue stats, and top power-using rooms • Private iCloud sync across your devices with the same Apple ID • Your data stays on your device — no account, no server, no tracking

Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/