Calctan vs Historical snapshot
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
Historical snapshot
Discover significant world events and historical moments. This app provides a glimpse into the past, making history accessible and engaging.
- View important world events
- Historical snapshots
- Accessible history content
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A history snapshot app that show important world events to you.
Screenshots
Verdict
The clearest difference is price: Calctan at Free against Historical snapshot's $1.99. Calctan also leads on rating (4.5 vs 1.0) and review sentiment (29% vs 0%). Historical snapshot's advantage is in-app purchases (none vs 1) and ads (none vs shown). On 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
Calctan is free to download; Historical snapshot costs $1.99 up front. Calctan sells 1 one-off in-app purchase. Historical snapshot asks for nothing beyond the download.
Calctan holds the better App Store score, 4.5 against 1.0. That said, the two scores are not equally well evidenced: Calctan has 61 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 29% of Calctan's written reviews are positive against 0% of Historical snapshot's.
Calctan ships an update every 3 months, Historical snapshot weekly. Both last shipped on October 24, 2026.
| Parameter | Calctan | Historical snapshot |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 4.5 (61 ratings) — better | 1.0 (2 ratings) |
| Positive reviews | 28.6% of reviews — better | 0.0% of reviews |
| Number of ratings | 61 — better | 2 |
| Update frequency | Every 3 months | Weekly — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases — better | Paid |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.6 | 8.0 — better |
| Further details — not scored | ||
| Size | 11 MB | 58 MB |
| Age rating | 4+ | 4+ |
| Developer | Jorge Lozada | 子浩 张 |
Customer experience
Calctan
Historical snapshot
In-app purchases
Calctan
- No Ads$9.99
Historical snapshot
No in-app purchases









