Carfy vs Duoza
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Carfy
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Carfy is a car-care log built around fewer taps and seeing the big picture at a glance: shorter paths to log maintenance and every fill-up or charge, charts and summaries for spending and fuel-use trends, and—when you turn on iCloud—the same data across your devices. Every service deserves a paper trail you can trust. Keep what was done, the odometer reading, and the date in one place. Before your next service or shop visit, open your history to check intervals and past work—so you’re less likely to repeat jobs on a whim or skip checks you still need. More peace of mind, and often a smarter spend. What you can do with it Quick logging: Pick common maintenance items in one tap, or define your own. For fuel or charging, enter mileage, totals, unit price, liters or kWh as you prefer, with options such as “filled up” / “fully charged.” Multiple vehicles & powertrains: A separate profile for each vehicle, with support for gasoline, battery-electric, and plug-in hybrid (PHEV: separate fueling and charging). Analytics: Monthly fuel cost, maintenance mix, fuel-economy estimates, and more—charts that make trends easy to see. iCloud sync: Sync vehicles, maintenance, and energy logs across devices (Apple iCloud / CloudKit private database when enabled; requires signing in to iCloud and allowing iCloud for this app in Settings). Privacy & your data: Records stay on your device by default; with sync enabled, they’re stored in the private iCloud database linked to your Apple ID, under your control. Report export: Export reports in supported formats (e.g. PDF and CSV where the app provides them) for archiving or sharing. ----------------------------------- Welcome to Carfy — Vehicle Maintenance Records! This app helps you keep a vehicle logbook, track maintenance, and monitor spending.By downloading and using this application, you agree to comply with the End User License Agreement (EULA): Apple Standard EULA (https://www.apple.com/legal/internet-services/itunes/dev/stdeula/). Payment will be charged to your iTunes account at confirmation of purchase. Subscriptions will automatically renew unless auto-renew is turned off at least 24 hours before the end of the current period. You can manage your subscriptions and auto-renewal in your account settings.
Duoza
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Duoza is a local bookkeeping app designed for couples and families who want to keep track of their finances together. It launches quickly with no network delays, requires no account or sign-in, contains no ads, and does not rely on third-party servers. You can use Duoza as a simple personal bookkeeping app on a single device. Or pair two devices to keep your household ledger in sync. Each device keeps its own copy of the data, providing an additional backup. When you get home, connect both devices to the same Wi-Fi network and open Duoza — your transactions will sync automatically. Duoza currently supports iOS and HarmonyOS 5.0 or later. We will continue improving and updating the app. Feedback and suggestions are always welcome through your app store review. ## Current Features 1. Local manual bookkeeping 2. Local network device pairing and data synchronization 3. Annual and monthly statistics 4. Transaction search 5. Category and quick-note tag management 6. Bookkeeping reminders 7. Shortcuts 8. Transaction export
Screenshots
Verdict
The clearest difference is in-app purchases: Duoza at none against Carfy's 2. Duoza also leads on update cadence (fortnightly vs every 5 months). On price, ads, device support and iOS requirement 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. Carfy sells 2 in-app purchases, starting at $4.99 per year. Duoza asks for nothing beyond the download.
Carfy ships an update every 5 months, Duoza fortnightly. The most recent releases landed on October 28, 2026 and October 5, 2026 respectively.
| Parameter | Carfy | Duoza |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.0 | 17.0 |
| Further details — not scored | ||
| Size | 12 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | xiao zhang | 耀 何 |
In-app purchases
Carfy
- Annual$4.991 Year
- Lifetime Access$8.99
Duoza
No in-app purchases









