AI Automated Double-Entry Bookkeeping
No Ads · No Data Selling

Bookkeeping,
Just 5 Things to Remember.

When, How, Which, Where, What. AI handles double-entry bookkeeping, then export your structured data to ChatGPT, Claude, or Gemini for personalized financial analysis.

5 Inputs
AI Auto Bookkeeping
Habits Become Assets

Just record simply, AI completes it as double-entry bookkeeping

Answer 5 questions and AI handles journal entries, categorization, and autocomplete.

4W1H Input

When · How · Where · Which · What — just 5 inputs and you're done

AI Auto-Categorization

AI automatically classifies categories and gets more accurate the more you use it

Smart Autocomplete

Remembers your frequent merchants and items to speed up entry

See exactly where your money flows this year, at a glance

Preview your annual financial flow with performance-based forecasts.

Annual Cash Flow Forecast

Separate card payments from cash spending and forecast monthly balance changes. Warnings for risky months.

Monthly Stats & Category Analysis

View income/expense trends in charts and understand your spending breakdown by category

AI Financial Analysis Export

Send your ledger data to AI and receive personalized financial insights

Recurring expenses and shared costs, managed automatically

One-time setup for recurring transactions and automatic advance payment splits.

Auto-Generated Recurring Transactions

Register rent, subscriptions, or loan repayments once and they're recorded automatically every month

Advance Payment & Settlement

Automatically split amounts paid on behalf of others, and track receipts and write-offs in one place

Quick Recurring Registration

Set a recurring schedule with one toggle while entering a transaction

Your data is safe, and your recording habit grows

Record with confidence and consistency with military-grade encryption and accessibility.

E2EE Encryption + Instant PIN Lock

All transaction data is encrypted on your device. The app locks instantly with PIN when opened.

Dark Mode & Accessibility

Solarized light and high-contrast dark themes. All text meets WCAG AA accessibility standards.

Your recording habits, scored

Record instantly for a higher score — track your recording diligence

Procrastinator
0
Avg 3.2-day delay
Instant recorder
0
Avg 0.3-day delay

Less than a cup of coffee.

Try it free for 14 days. Cancel anytime.

$29.99
/year ($2.50/month)
  • All AI Auto-Journal Features
  • Unlimited Transactions
  • Data Visualization Dashboard
  • Export Data for AI Analysis (CSV/JSON)
  • E2EE Encryption (PIN Protected Data)
  • Auto-Generated Recurring Transactions
  • Annual Cashflow Dashboard
Start 14-Day Free Trial
1
Start Free
2
14-Day Trial
3
Let the Habit Prove Itself

Start without a credit card. Decide when the habit forms.

Cancel anytime · Access continues until end of billing cycle

4W1H 4W1H

4 wealth, 1 habit

© 2025 4w1h. All rights reserved.

RED SUB Inc.

Address: 101-411, 4F, 195 Baengma-ro, Ilsandong-gu, Goyang-si, Gyeonggi-do

Business Reg. No.: 679-87-00603 [Verify]

Seller Reg. No.: 2025-Goyang Ilsandong-1944

Phone: 070-7954-6675

Phone support is not available. Please use the Contact Us button above.

CEO: Youngjun Kwon

Email: [email protected]