Calctan vs oMeoo
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Calctan
This sophisticated calculator app offers a minimalist design with advanced mathematical functions and extensive personalization options. It seamlessly syncs across devices and includes multitasking features for enhanced productivity.
- Intuitive minimalist design
- 100+ customizable themes
- 47 advanced mathematical functions
- Automatic calculation history
- iCloud sync across devices
- Split Screen and Swipe Mode multitasking
- Share calculations easily
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Calctan is a sophisticated calculator app designed for iOS devices (iPhone and iPad), celebrated for its elegant, minimalist design and robust functionality that surpasses traditional calculators. Tailored for students, professionals in mathematics, physics, engineering, and anyone seeking a highly customizable and intuitive calculation tool, Calctan combines advanced mathematical capabilities with a seamless user experience. Its sleek interface and extensive personalization options make it both a practical tool and a visually appealing addition to your device. The app’s commitment to user-centric design is evident in its seamless integration with iOS ecosystems. With iCloud sync, your calculations and preferences are always up-to-date, whether you’re switching between devices or collaborating on the go. Features like Split Screen and Swipe Mode empower iPad users to maximize productivity, while the ability to share calculations fosters effortless communication. Calctan is more than a calculator—it’s a dynamic, adaptable tool that elevates your calculation experience with style, precision, and efficiency. Key Features: 1. Intuitive Design: Calctan’s clean, minimalistic interface prioritizes usability, presenting essential calculator elements in a clear, distraction-free layout that ensures effortless navigation and operation. 2. Personalized Interface: Choose from 100 pre-installed themes or craft a unique look with a custom color picker. Fine-tune button corner radius, spacing, and layout to optimize comfort and readability, allowing the app to reflect your personal style. 3. Advanced Math: Access 47 powerful functions, including trigonometric operations (sine, cosine, tangent, and their inverses), percentages for budgeting, exponents, logarithms (base-10, natural, base-2), and roots (square, cube). Switch between degrees and radians, compute factorials for permutations, or use absolute values and reciprocals—perfect for scientific, technical, and financial calculations. 4. Calculation History: Automatically saves and organizes your calculations, enabling you to revisit, edit, or reuse past results with ease, streamlining complex workflows. 5. iCloud Sync: Seamlessly syncs calculations and customizations across your iPhone and iPad, ensuring a consistent and cohesive experience across all your devices. 6. Multitasking Modes: - Split Screen Mode: On iPad, use Calctan alongside another app, such as performing calculations while referencing a document or spreadsheet. - Swipe Mode: Access a second app at the bottom of the screen while keeping Calctan active at the top, enhancing productivity for multitasking users. 7. Share Calculations: Share results effortlessly via email, text, or other apps, making collaboration and communication quick and convenient. Additional Highlights: • Library of basic mathematical constants • Random color theme generator for creative inspiration • Engaging sounds and animations for a dynamic user experience • Adjustable decimal places, currency symbols, and thousands separators • Dark Mode support for comfortable use in low-light environments • Comprehensive settings menu for full control over app preferences • Detailed user manual for easy onboarding and reference
oMeoo
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Introduction: oMeoo is a tailor-made diary app for iOS users. It allows for quick recording of daily life events and helps in managing reminders for important occurrences. Key Features: 1. Quick Recording: Capture your life moments with a single tap. Event Reminders: Never miss any important events. Clean Interface: User-friendly and straightforward. Data Security: Ensuring the privacy of your data. Use Cases: Whether it's for keeping track of daily chores or reminders for significant meetings, oMeoo makes it easy to manage. Suitable for all iOS users needing recording and reminder functions
Screenshots
Verdict
The clearest difference is in-app purchases: oMeoo at none against Calctan's 1. oMeoo also leads on ads (none vs shown) and update cadence (monthly vs every 3 months). On price, 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. Calctan sells 1 one-off in-app purchase. oMeoo asks for nothing beyond the download.
Calctan ships an update every 3 months, oMeoo monthly. The most recent releases landed on October 11, 2026 and October 3, 2026 respectively.
| Parameter | Calctan | oMeoo |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (61 ratings) — better | — |
| Positive reviews | 28.6% of reviews | — |
| Number of ratings | 61 — better | — |
| Update frequency | Every 3 months | Monthly — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.6 | 16.4 — better |
| Further details — not scored | ||
| Size | 11 MB | 15 MB |
| Age rating | 4+ | 17+ |
| Developer | Jorge Lozada | 东举 杨 |
In-app purchases
Calctan
- No Ads$9.99
oMeoo
No in-app purchases








