Calo vs Hours Clocker
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Calo
This free calculator app offers a clean interface with instant launch and a history feature to view past calculations. It includes customizable themes, keypress sounds, and real-time result display for a smooth user experience.
- Calculation history
- Segmented input method
- iPad split-screen support
- Customizable themes and sounds
- Real-time result display
- Undo and delete functions
Read full descriptionHide full description
Calo is a free, ad-free calculator for everyday math and deeper exploration. A clean keypad keeps quick calculations simple; switch to scientific mode when you need more. Calculate with confidence • A native high-precision engine keeps up to 40 significant digits in results. • See results as you type. Move the cursor to edit or paste an expression, and use a hardware keyboard on iPad. • Explore powers, roots, logarithms, trigonometry, factorials and more. Switch between degrees and radians. • Tap a result to cycle through rounded, full-precision, fraction (when available) and scientific formats. Use memory keys for multi-step work. Keep your work close • Search your calculation history, add notes, reuse an earlier expression, or export results as CSV or a receipt-style image. • Save expressions you use often and insert them with a tap. • See recent results in Home Screen and Lock Screen widgets. Open Calo from Control Center, or calculate and retrieve your latest result with Siri and Shortcuts. Make it yours with light and dark themes, accent colors, sounds, Chinese voice pronunciation, adjustable decimal places and optional iCloud sync.
Hours Clocker
Effortlessly track hourly work and generate professional invoices with AI-powered time import and detailed reporting. This app helps freelancers and contractors manage their earnings and client payments.
- AI-powered time import from camera, PDFs, and images
- Professional, itemized PDF invoice generation
- Detailed earnings reports with charts
- Live timer and manual shift entry
- Support for overtime, tips, and taxes
- Multiple job profiles with custom rates
- Calendar synchronization
Read full descriptionHide full description
Hours Clocker is the most advanced and intuitive time tracking application designed for freelancers, contractors, and hourly workers. Say goodbye to manual data entry and messy spreadsheets. With powerful AI features and professional invoicing, Hours Clocker handles the busy work so you can focus on what you do best. AI SMART IMPORT Revolutionize how you track time. Use the camera to scan paper timesheets, or import PDFs and images directly. Our advanced AI automatically extracts shifts, breaks, and notes, converting them into digital entries in seconds. It is like having a personal assistant for your timesheets. PROFESSIONAL INVOICING Create beautiful, itemized PDF invoices right from your phone. Customize them with your company logo, set your rates, and share them directly with clients. Support for overtime rates, tax calculations, and pay periods ensures every penny is accounted for. POWERFUL REPORTING Gain deep insights into your earnings. View detailed breakdowns by day, week, or month. Sort your logs by date, hours, pay, tax, or tips to analyze your income trends. Export your data to CSV or JSON for seamless integration with other tools. FLEXIBLE TIME TRACKING Track time your way. Use the live timer on the job, or add shifts manually at the end of the day. Support for multiple jobs means you can keep separate profiles for different clients, each with their own rates and settings. CALENDAR SYNC Keep your schedule organized by automatically syncing your work shifts to your device calendar. Never lose track of when you worked. PRIVATE AND SECURE Your data belongs to you. Hours Clocker stores all your data locally on your device. We do not track your location or sell your data. Export and backup your data anytime. Features: - Live Timer and Manual Entry - AI-Powered Text, File, and Camera Import - PDF Invoice Generation - CSV and JSON Data Export - Comprehensive Reports with Charts - Support for Overtime, Tips, and Taxes - Multiple Job Profiles - Calendar Synchronization - Clean, Modern Interface - Dark Mode Support Optimize your productivity and take control of your time with Hours Clocker.
Screenshots
Verdict
The clearest difference is price: Calo at Free against Hours Clocker's $3.99. Calo also leads on review sentiment (94% vs 50%) and update cadence (every 5 days vs every 2 months). On ratings volume, 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
Calo is free to download; Hours Clocker costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Calo holds the better App Store score, 4.7 against 4.3. Both are backed by a comparable volume of ratings — 21 and 22 respectively. Written reviews point the same way: 94% of Calo's written reviews are positive against 50% of Hours Clocker's.
Calo ships an update every 5 days, Hours Clocker every 2 months. The most recent releases landed on October 30, 2026 and October 27, 2026 respectively.
| Parameter | Calo | Hours Clocker |
|---|---|---|
| Price | Free — better | $3.99 |
| Rating | 4.7 (21 ratings) — better | 4.3 (22 ratings) |
| Positive reviews | 94.4% of reviews — better | 50.0% of reviews |
| Number of ratings | 21 | 22 — better |
| Update frequency | Every 5 days — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad | iPhone, iPad, Vision Pro — better |
| Requires iOS | 16.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 13 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Space-Time Transformation Technology Co., Ltd. | Anass Damri |
Customer experience
Calo
Hours Clocker
In-app purchases
Calo
No in-app purchases
Hours Clocker
No in-app purchases









