Asset Diary vs koban
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Asset Diary
Track your net worth daily with this app. Log assets, deposits, withdrawals, and gains/losses. Set financial goals and view trends with customizable charts and reminders. Your data stays private on your device.
- Record total assets daily
- Track deposits, withdrawals, gains, and losses
- Set and manage financial goals
- View asset trends with charts
- Daily, weekly, and monthly reminders
- Data backup and restore
- Categorize and manage assets
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Log your total assets every day and see the trend at a glance. No sign-up required. Your data stays on your device. WHAT YOU CAN DO • Record your total assets • Record deposits and withdrawals • Record gains and losses • Add daily memos • Recording reminders (daily / weekly / end of month, at a time you choose) Reminders arrive only on days you haven't recorded yet. • Day-over-day change (amount and %) • Month-over-month change (amount and %) • Daily asset chart (line) • Daily calendar view • Monthly targets calculated from a starting amount, a final goal and a period (up to 1 year) Targets assume compounding at a fixed rate. • Switch the display language (Japanese / English) • Switch the currency unit (yen / dollars) Display only — no currency conversion is applied. • Create a backup • Restore from a backup PAID MODE Performance • Year-over-year change (amount and %) • Year-to-date high • Year-to-date low • Bar, pie and area charts added to the daily view • Monthly asset charts (bar, line, pie, area) • Monthly calendar view • Yearly asset charts (bar, line, pie, area, candlestick) Line charts can show this year and last year together. • Yearly calendar view • All-time asset charts (bar, line, pie, area, candlestick) Goals • Set a period of up to 100 years • Set a monthly contribution • Adjust each month's target individually • Update your goals as you go Categories • Split and manage your assets by category Ads • Removes ads Memos • Up to 300 characters
koban
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Simple monthly balance management app ・seamless list display ・graph display ・multiple accounts ・color variations
Screenshots
Verdict
The clearest difference is in-app purchases: koban at none against Asset Diary's 1. koban also leads on ads (none vs shown) and iOS requirement (12.0 vs 15.0). Asset Diary's advantage is update cadence (every 6 weeks vs every 3 months). On price and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Asset Diary sells 1 in-app purchase, starting at $1.99 per month. koban asks for nothing beyond the download.
Asset Diary ships an update every 6 weeks, koban every 3 months. The most recent releases landed on October 9, 2026 and October 4, 2026 respectively.
| Parameter | Asset Diary | koban |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| Update frequency | Every 6 weeks — better | Every 3 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 25 MB | 37 MB |
| Age rating | 4+ | 4+ |
| Developer | kazuki kunimura | Kaharu Fukushima |
In-app purchases
Asset Diary
- 有料モード7 Days trial$1.991 Month
koban
No in-app purchases
