Comparison

Xmart Calculator Pro vs PK10000

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

Head to head
About

Xmart Calculator Pro

This app functions as an intelligent, programmable calculator that allows users to define custom algebraic functions. It provides instant results as expressions are updated and offers step-by-step calculation traceability. Users can save, recall, and share their calculation history.

Highlights
  • Define custom algebraic functions
  • Instant calculation results
  • Step-by-step calculation traceability
  • Save and recall calculation history
  • Configurable appearance (colors, fonts)
  • Includes a mortgage calculator
Features
Read full description

Let's look at some simple questions: Question 1: James can make $200 per day, what would be his annual income ( He works 5 days a week, 48 weeks per year) ? This is easy, just enter an expression as this in Xmart Calculator: 200 x 5 x 48 Question 2: How many times of tapping a button to calculate his annual income? 8 times on a normal calculator, 7 times on Xmart Calculator (you don't need to tap the '=' button). Question 3: What if his day rate is $320, $400, $500...? Well, very similar: 320 x 5 x 48; 400 x 5 x 48; 500 x 5 x 48... What's the problem? With a normal calculator, we have to enter the same buttons 'x 5 x 48' very time when the only value changes is just the day rate. Is there any way to just enter the day rate and the result will update automatically? With Xmart Calculator, YES! You can define a Algebra function like this: "IncomeByDay(X) = X x 5 x 48" Then you can just select the function and enter the value for 'X' and the result will update straight away! To get James annual income, you just need to tap buttons 4 times. -- End of questions -- Xmart Calculator is appreciated as an intelligent, programmable and expandable calculator based on text expression. In addition to most of the common and scientific functions, users can also define personal functions. All calculations are step-by-step traceable. **Quick start: * There is no '=' button in this calculator app, it will calculate and show result as soon as the expression is updated. * Swipe up/down to hide/show the history records. * Swipe left and right to hide/show the scientific/math functions. **Main feature: * Custom functions: user can define any algebra functions with up to 9 parameters. * Use a custom function in the main expression or play with it separately. * Calculate and show result instantly when the input is updated. * Most common scientific & math functions are included. * Save calculation to history * Review & Recall history results or expressions * Name/label a history item meaningfully * Record and show step by step details of the calculation * Share history with friends * Fast mortgage calculator is included **Additional features * Support Apple Watch & iMessage * Auto save: turn ON/OFF or set a custom timer for saving results automatically * Colours, layouts and fonts are configurable, you can design your own calculator. * Turn ON/OFF button sounds. * Select button sound from 6 different options

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

Xmart Calculator Pro4 screens
PK100004 screens

Verdict

The call

The clearest difference is price: PK10000 at Free against Xmart Calculator Pro's $5.99. PK10000 also leads on update cadence (every 3 weeks vs every 6 weeks). Xmart Calculator Pro's advantage is in-app purchases (none vs 4) and review sentiment (85% vs 55%). On rating and ads 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

PK10000 is free to download; Xmart Calculator Pro costs $5.99 up front. PK10000 sells 4 in-app purchases, starting at $0.99 per month. Xmart Calculator Pro asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.4 for Xmart Calculator Pro against 4.3 for PK10000. That said, the two scores are not equally well evidenced: Xmart Calculator Pro has 153 ratings behind it against 6, so its average is the more settled of the two. Written reviews are what separate them: 85% of Xmart Calculator Pro's written reviews are positive against 55% of PK10000's.

UpkeepUpdate frequency

Xmart Calculator Pro ships an update every 6 weeks, PK10000 every 3 weeks. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.

Scorecard8 real differences · 2 level
Xmart Calculator Pro versus PK10000: the parameters behind the verdict, then further details
ParameterXmart Calculator ProPK10000
Price$5.99Free — better
Rating4.4 (153 ratings) — better4.3 (6 ratings)
Positive reviews85.5% of reviews — better54.5% of reviews
Number of ratings153 — better6
Update frequencyEvery 6 weeksEvery 3 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPod
Requires iOS13.0 — better15.2
Further details — not scored
Size13 MB56 MB
Age rating4+4+
DeveloperXHLIU正峰 蒋

Customer experience

Xmart Calculator Pro

All ratings153 ratings
Positive84.3%
Neutral7.2%
Negative8.5%
Written reviews172 reviews
Positive85.5%
Neutral4.1%
Negative10.5%

PK10000

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

Bugs and requests

Xmart Calculator Pro

Reported bugs

8 issues
  • Illegal character error when reusing equals button result
  • Preferences dialog opens on equals button tap
  • Save button disappeared in history feature
  • Percentage key calculations malfunction
  • Decimal multiplication errors
Show 3 more
  • Cursor jumping when editing functions
  • Pop-up ads freezing application
  • Inconsistent percentage operation behavior

Requested features

8 requests
  • Fraction form results display
  • RPN (Reverse Polish Notation) support
  • Better iPad screen optimization
  • Decimal input accepting '.2' as '0.2'
  • Smart decimal place display
Show 3 more
  • Portrait mode option for iPad
  • Easier custom function editing interface
  • Light color theme with dark font contrast

PK10000

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Xmart Calculator Pro

No in-app purchases

4 purchases

PK10000

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

Questions

Is Xmart Calculator Pro free?
Xmart Calculator Pro costs $5.99, with no in-app purchases.
Is PK10000 free?
PK10000 is free to download, with in-app purchases available.
Which has better reviews, Xmart Calculator Pro or PK10000?
Xmart Calculator Pro is rated higher. Xmart Calculator Pro averages 4.4 out of 5 from 153 ratings, while PK10000 averages 4.3 from 6 ratings.
Do Xmart Calculator Pro or PK10000 have ads?
Neither Xmart Calculator Pro nor PK10000 shows ads.
Which is updated more often, Xmart Calculator Pro or PK10000?
Xmart Calculator Pro ships an update every 6 weeks, and PK10000 every 3 weeks. Most recently, Xmart Calculator Pro was updated on October 29, 2026 and PK10000 on October 24, 2026.

Other comparisons