DayInBook vs VulpFlow
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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
VulpFlow
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What if you finance a new car — how does the monthly payment reshape your cash flow? What if a Caribbean trip hits in July? What if your bills all land on the same week? What if you cut that credit card bill in half? Most apps tell you what happened. VulpFlow shows you what's coming. Enter your income, bills, loans, and credit cards once — and see your balance play out day by day. --- WHAT MAKES IT DIFFERENT --- Other apps track the past. VulpFlow maps the future. No bank connection required. No data leaves your device. --- WHAT YOU CAN DO --- - See your next cashflow gap before it hits - Get warned before your balance goes negative - Track loans, credit cards, and bills in one timeline - Run "what if" scenarios and see the impact instantly - Set alerts so nothing catches you off guard --- WHO IT'S FOR --- You earn enough. But timing gets messy. Rent hits before payday. Cards overlap with bills. A good balance turns into a stressful week. VulpFlow is for people who don't have a spending problem. They have a timing problem. --- YOUR PRIVACY --- Everything stays on your device. No account. No cloud. No ads. Free to start. Upgrade to Pro for 1-year forecasts, unlimited accounts, and smart alerts. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://foxdenlab.com/vulpflow/privacy.html
Screenshots
Verdict
The clearest difference is update cadence: DayInBook at every 3 days against VulpFlow's every 4 months. VulpFlow's advantage is iOS requirement (15.1 vs 17.0). On price, ads, in-app purchases 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. DayInBook sells 4 in-app purchases, starting at $1.99 per month and VulpFlow sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.
DayInBook ships an update every 3 days, VulpFlow every 4 months. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.
| Parameter | DayInBook | VulpFlow |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 days — better | Every 4 months |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone | iPhone, iPod — better |
| Requires iOS | 17.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 15 MB | 58 MB |
| Age rating | 4+ | 4+ |
| Developer | 阳 曹 | Yufan Shi |
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
VulpFlow
- VulpFlow Pro Plan - Monthly$4.991 Month
- Lifetime Access$29.99









