CalcApp vs FlowClock
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CalcApp
This app combines basic arithmetic, scientific functions, programmer conversions, and unit conversions into a single, easy-to-use tool. It automatically saves all your calculations to a history log, ensuring you never lose important data.
- Basic Arithmetic
- Scientific Calculator
- Programmer Mode
- Unit Converter
- History Tracking
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Tired of juggling multiple calculators and conversion apps for different tasks? With this all-in-one Calculator, you can breeze through everything from basic arithmetic to advanced scientific functions and even programmer-specific conversions—right at your fingertips. Whether you’re a student crunching numbers, a professional tackling complex equations, or a developer needing quick logic and base conversions, we’ve got you covered. Plus, every result is automatically saved to your History, so you’ll never lose important calculations again. Key Features: - Basic Arithmetic: Quick and easy for your everyday math needs. - Scientific Calculator: Effortlessly handle trigonometric, logarithmic, and other high-level operations. - Programmer Mode: Seamlessly switch between binary, octal, decimal, and hexadecimal, plus logical operations. - Unit Converter: Instantly convert lengths, volumes, temperatures, and more—no extra steps needed. - History Tracking: Automatically record and revisit your calculations at any time. Download now to transform your smartphone into the ultimate computation powerhouse, ready to solve any math or conversion challenge in seconds!
FlowClock
Transform your device's idle screen into a dynamic art piece. Customize clock styles, colors, fonts, and animations to create a unique visual experience. Enjoy elegant and personalized displays for your desktop or bedside.
- Dynamic backgrounds
- Customizable clock styles
- Adjustable colors and fonts
- Animated displays
- Personalized visual experience
- Screensaver functionality
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In FlowClock, time is not just a number; it is a flowing piece of art. You can freely switch dynamic backgrounds, clock styles, colors, fonts, and positions to create a personalized visual experience. With beautiful animations and customization options, FlowClock adds elegance and personality to your desktop, bedside, or screensaver, making every second radiate unique charm. FlowClock offers a free trial. Unlock membership to enjoy unlimited access to all features. Monthly and yearly subscriptions are available. All subscriptions will be charged through your Apple ID account and will automatically renew unless canceled 24 hours before the end of the current period. You can manage your subscription status in your account settings. For any errors or to provide feedback and suggestions, please contact us via the "Feedback" section in the app's settings. Privacy Policy: https://www.joydrif.com/flowclock/privacy-policy.html Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is review sentiment: FlowClock at 100% against CalcApp's 75%. CalcApp's advantage is monetization model (free vs freemium). On price, update cadence, ads and in-app purchases 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. CalcApp sells 2 one-off in-app purchases and FlowClock sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.
CalcApp ships an update every 3 weeks, FlowClock every 2 weeks. The most recent releases landed on October 2, 2026 and October 10, 2026 respectively.
| Parameter | CalcApp | FlowClock |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (19 ratings) — better | — |
| Positive reviews | 75.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 19 — better | — |
| Update frequency | Every 3 weeks | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free — better | Freemium |
| Devices | iPhone, iPad | iPhone, iPad, Mac — better |
| Requires iOS | 16.4 — better | 17 |
| Further details — not scored | ||
| Size | 4 MB | 42 MB |
| Age rating | 4+ | 4+ |
| Developer | 尉 张 | 宇 刘 |
Customer experience
CalcApp
FlowClock
In-app purchases
CalcApp
- Monthly Plan$0.99
- Annual Subscription$1.99
FlowClock
- Monthly Plan$0.991 Month
- Annual Plan$1.991 Year
- Lifetime Access$2.99








