The offline-first digital ledger that tracks who owes you, sends WhatsApp reminders automatically, and never loses your data — even without internet.
No bank account required. No internet needed. Just open the app and record.
Just say "5000 for Musa" or "Amaka owes me 2000" and the app fills in the amount and name automatically. Faster than typing.
All your data lives on your phone. No internet? No problem. Records sync to the cloud automatically when you reconnect.
One tap sends a polite payment reminder to a customer via WhatsApp. No awkward conversations — let the app do the asking.
Add a customer's email and DebtBOOK silently sends overdue notifications on your behalf. Professional reminders, zero effort.
Every debtor and debt is backed up to Supabase cloud. Change phones, reinstall the app — your records come back automatically.
Lock the app with your fingerprint or face ID. Your customers' data stays private even if someone picks up your phone.
No training. No manual. Just download and start recording debts.
Free APK download. No Play Store needed. Install directly on any Android phone running 7.0+.
Enter your Nigerian phone number, confirm with the code sent to WhatsApp. No passwords to remember.
Type or speak their name and the amount they owe. Add a due date and phone number for reminders.
When debts are due, send a WhatsApp message in one tap. Log payments as they come in. Watch your total drop.
"Before DebtBOOK I was using a paper book and always forgetting who paid. Now I check my phone and know exactly who owes me and how much. The WhatsApp reminder is the best part."
"I used to write names in my phone notes but I would mix everything up. DebtBOOK separates each customer properly. Even without internet it still works at the market."
"I just press the microphone and say the name and amount. It types itself! My sister showed me this app and now I show everyone in my shop. Very easy to use."
No credit card. No hidden fees. Free forever for basic use.
Download DebtBOOK free and start tracking debts in the next 60 seconds.