Comparison

Calctan vs PK10000

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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

About

PK10000

This app helps you achieve mastery through deliberate practice by tracking your progress towards long-term goals. It offers goal management, detailed statistics, and a Pomodoro timer to enhance focus and efficiency.

Highlights
  • Goal Management (100-10,000 hours)
  • Tag Classification (12 categories)
  • Data Statistics (daily, monthly, yearly)
  • Pomodoro Timer (study/break sessions)
  • Minimalist Interface
  • Subscription Plans
Features
Read full description

"The 10,000-Hour Rule" suggests that excellence in any field results from continuous and deliberate practice. As Malcolm Gladwell puts it, geniuses are made through relentless, intentional practice. Time, an eternal topic for humanity, becomes particularly poignant in the 21st century, where a human life spans roughly 30,000 days. The choices you make and the efforts you put in will determine the value of your entire life. In the words of Malcolm Gladwell, genius is the outcome of sustained deliberate practice. The principle is simple yet incredibly complex, as one may not be certain if they've chosen the right direction or if they can accumulate enough knowledge and experience to reach great heights. However, doing nothing guarantees emptiness. If your direction is uncertain, take action to enrich yourself and discover the goal within your heart. If your path is clear, keep moving forward, as challenging yourself from yesterday is the only way to become a better version of yourself. The product "PK10000" is grounded in this philosophy. We aim to document your transformative journey, helping you accomplish the lengthy voyage of 10,000 hours. To achieve the 10,000-hour goal, "PK10000" offers: 1. Goal Management: Choose 100, 500, or 10,000 hours as your target (supporting smaller goals). Starting small aligns with ancient wisdom; complete smaller goals first, then conquer the ultimate goal—one step at a time. 2. Tag Classification: We provide 12 tag categories to support your learning or work. Fine-tune the management of your goals within these categories for a more detailed control of your time investment. 3. Data Statistics: Track your goal progress percentage and data for 3 dimensions (daily, monthly, yearly) across 12 tags. Gain clear insights into your goal and time investment. Adjust your time strategy when you identify issues with input and output. 4. Pomodoro Timer: Utilize study sessions of up to 120 minutes and breaks of up to 60 minutes. Even the fastest horse needs to graze; we hope you represent focused and balanced learning—an advocate for efficiency. "PK10000" Design Philosophy: 1. Single-threaded Operation: Embrace Jobs' philosophy of single-threaded simplicity for enhanced efficiency. 2. Minimalist Interface: A minimalist design fosters user focus, and focus leads to greater heights. 3. Enjoyability: When tired, enjoy a cup of coffee! Represent the Pomodoro timer as a coffee moment. Brewing a cup of coffee takes time, and similarly, savoring it requires a moment of stillness. Contact Us help@xunshan.cn Privacy Policy: https://www.xunshanapp.cn/privacy_en.html User Agreement: https://www.xunshanapp.cn/useragreement_en.html

Screenshots

Calctan4 screens
PK100004 screens

Verdict

The call

The clearest difference is ads: PK10000 at none against Calctan's shown. PK10000 also leads on review sentiment (55% vs 29%) and update cadence (every 3 weeks vs every 3 months). Calctan's advantage is rating (4.5 vs 4.3) and ratings volume (61 vs 6). On price, in-app purchases, monetization model 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Calctan sells 1 one-off in-app purchase and PK10000 sells 4 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Calctan holds the better App Store score, 4.5 against 4.3. That said, the two scores are not equally well evidenced: Calctan has 61 ratings behind it against 6, so its average is the more settled of the two. Written reviews complicate that: 29% of Calctan's written reviews are positive against 55% of PK10000's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Calctan ships an update every 3 months, PK10000 every 3 weeks. The most recent releases landed on September 25, 2026 and August 18, 2026 respectively.

Scorecard5 real differences · 5 level
Calctan versus PK10000: the parameters behind the verdict, then further details
ParameterCalctanPK10000
PriceFreeFree
Rating4.5 (61 ratings) — better4.3 (6 ratings)
Positive reviews28.6% of reviews54.5% of reviews — better
Number of ratings61 — better6
Update frequencyEvery 3 monthsEvery 3 weeks — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPadiPhone, iPod
Requires iOS16.615.2 — better
Further details — not scored
Size11 MB56 MB
Age rating4+4+
DeveloperJorge Lozada正峰 蒋

Customer experience

Calctan

All ratings61 ratings
Positive88.5%
Neutral0.0%
Negative11.5%
Written reviews7 reviews
Positive28.6%
Neutral0.0%
Negative71.4%

PK10000

All ratings6 ratings
Positive83.3%
Neutral0.0%
Negative16.7%
Written reviews11 reviews
Positive54.5%
Neutral18.2%
Negative27.3%

In-app purchases

1 purchases

Calctan

One-time1
  • No Ads$9.99
4 purchases

PK10000

Subscriptions2
  • Monthly$0.991 Month
  • Annually$3.991 Year
One-time2
  • Early Bird MemberShip$2.99
  • Lifetime$9.99

Questions

Is Calctan free?
Calctan is free to download, with in-app purchases available.
Is PK10000 free?
PK10000 is free to download, with in-app purchases available.
Which has better reviews, Calctan or PK10000?
Calctan is rated higher. Calctan averages 4.5 out of 5 from 61 ratings, while PK10000 averages 4.3 from 6 ratings.
Do Calctan or PK10000 have ads?
Calctan shows ads; PK10000 does not.
Which is updated more often, Calctan or PK10000?
Calctan ships an update every 3 months, and PK10000 every 3 weeks. Most recently, Calctan was updated on September 25, 2026 and PK10000 on August 18, 2026.

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