Quantin vs DayInBook
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Quantin
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Quantin is a revolutionary way to watch your cash flow live! Based on your inputs, see in one glance what your free cash flow is for a year, a month, a week, a day, an hour, every minute and even every second! Get motivated to spare a little more each month, See how much more passive income you should get to reach and maintain your financial freedom. Quantin does not grant any credit, it simply helps you summarise your finances in one look!
DayInBook
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DayInBook is a personal finance tracker designed with one ultimate goal: "Financial Freedom." We believe that bookkeeping isn't just about tracking expenses—it's about auditing your life and planning your future. With DayInBook, you can: • Experience a minimalist and smooth tracking flow. • Use AI models to analyze your financial health. • Watch your "Financial Freedom Progress Bar" fill up as your passive income covers your expenses. Making saving money feel like an achievement. Data is securely synced via native iCloud. Terms of Use: https://caoyangup.com/blog/cashflow-fuwu-tiaokuan Privacy Policy: https://caoyangup.com/blog/cashflow-yinsi-zhengce
Screenshots
Verdict
The clearest difference is in-app purchases: Quantin at none against DayInBook's 4. Quantin also leads on device support (3 vs 1) and iOS requirement (10.3 vs 17.0). DayInBook's advantage is update cadence (every 3 days vs every 3 months). On price and ads 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. DayInBook sells 4 in-app purchases, starting at $1.99 per month. Quantin asks for nothing beyond the download.
Quantin ships an update every 3 months, DayInBook every 3 days. Both last shipped on October 4, 2026.
| Parameter | Quantin | DayInBook |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 months | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 10.3 — better | 17.0 |
| Further details — not scored | ||
| Size | 25 MB | 15 MB |
| Age rating | 4+ | 4+ |
| Developer | LADONNEE Consulting SARL | 阳 曹 |
In-app purchases
Quantin
No in-app purchases
DayInBook
- PRO月订阅$1.991 Month
- PRO年订阅$9.991 Year
- AI积分100$1.99
- AI积分1000$17.99









