Comparison

Calculator Advance Pro vs Lepus Timer

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

Head to head
About

Calculator Advance Pro

This app offers advanced calculation features for business and travel, including currency and cryptocurrency conversion. It mimics the button operations of physical business calculators and allows for formula correction and extensive customization.

Highlights
  • Currency and cryptocurrency conversion
  • Formula display and correction
  • Customizable button operations
  • Mimics physical business calculators
  • Supports SHARP and CASIO input types
  • Constant, percent, and tax calculations
Features
Read full description

“Calculator Advance Pro” provides button operation on the same level as commercially available business calculators, so this calculator app is sufficiently useful for a variety of business situations. In addition to providing such high-quality basic functions, it also has the following expanded functions. - Currency conversion for the world currencies and cryptocurrencies. - Formula display and correction. - Many possible customizations. + Have you ever experienced these problems with current calculators and calculator apps? - When I am traveling abroad or on a business trip, I would like to convert the local currency's value to the value in my home country's currency. - I would like to get a calculator that can perform calculations with cryptocurrencies. - When I make a mistake in a calculation, I don't want to re-enter the entire calculation from the beginning. This is especially frustrating during long calculations. - Calculator applications lack the functionality of physical calculators. - I would like a calculator application with the functionality of a practical calculator, not a scientific calculator. - I want a well-designed calculator application. “Calculator Advance Pro” is a calculator application that solves the problems found in other physical and virtual calculators. This application is used by professional businessmen, such as accountants, tax accountants, and salespeople, from whom we have received highly favorable feedback. + Can convert both real-world currencies and cryptocurrencies In “Calculator Advance Pro”, there is a currency conversion screen separate from the actual calculator. There, you can download and view the latest exchange rate information of about 167 world currencies (legal currencies), as well as over 1,600 cryptocurrencies from the Internet. In addition, you can use the calculator function utilizing your currency conversion results. The currency data is the same data used by large companies listed on the NYSE (New York Stock Exchange), as well as those included on the S&P 500 Index. + Equipped with functionality on par with commercially available practical calculators One can chose between the two most common types of input (SHARP and CASIO) used in commercially available calculators. The input type can be set on the setting screen. It is possible to configure the buttons for advanced users who wish to use high-level functions that appear in calculator manipulation textbooks (reference books for calculator skill tests, etc.). For example, it is possible to perform constant calculations, percent calculations, tax calculations, calculations using grand totals (GT), memory calculations, exponentiation calculations, and complex operations involving combinations. The button manipulation is the same as that which is published in calculator manipulation textbooks (questionnaires on calculator tests). We have conducted many other tests, and we are always working to improve the reliability of our calculator application. + Convenient for long calculations. Display, review, and editing of calculations is possible. Calculation formulas are displayed, so they are easy to review. In addition, it is possible to modify formulas. It is very convenient because there is no need to re-enter a calculation from the beginning when a mistake is made, it is as simple as correcting the wrong part. + Original and useful features In addition, the application has its own unique and convenient functions: - Displays calculation formulas, independent memory values, and GT memory values in real time - Displays up to 15 digit numbers - Enough memory to save history data for up to 10,000 calculations - Results can be copied and pasted into other applications. - Button configuration can be changed (6 types in total: 4x5, 4x6, 4x7, 5x4, 5x5, 5x6) - Buttons can be set and adjusted. - Stylish Design And more...

About

Lepus Timer

Features
Read full description

Lepus Timer is a simple and cute time management app that lets you track time for each task with a countdown or count-up timer. Easy to use for everyone, from kids to adults. Studying, building skills, working out, working, reading— Why not see how much time you're really spending? By visualizing your time and goals, Lepus Timer helps you stay motivated and build better habits. ■ Features From quick tasks to long focus sessions, Lepus Timer fits all kinds of situations. ● Countdown & count-up  Works for timed tasks and free-form tracking alike ● Focus time, breaks, and sets  Perfect for the Pomodoro Technique and HIIT workouts ● Pre-start countdown  (10, 5, or 3 seconds) ● Pre-end countdown alerts  Set separately for focus, break, and session end ● Background music  Stay relaxed while you focus  *Full version lets you use your own MP3 files (up to 5 MB) ● Goal time and goal count for each task ● Add and edit your logs ● A plant that grows as you make progress ● A bunny that quietly cheers you on every day ● Works offline  Your records are stored on your device ● Google Drive backup  Keep your records when you switch devices (optional) ● Minimal notifications  Only what you need, such as when a session ends ■ Recommended for ・Anyone who wants to work steadily toward a goal ・Anyone who wants to visualize their time and progress ・Anyone who likes simple apps with a touch of fun ・Anyone looking for an app that's genuinely useful for free ・Bunny lovers ■ Please note There are no social features for interacting with other users. (We intentionally left them out so that kids can use the app safely.) If you'd like to work alongside friends, another app may suit you better. ■ Contact We'd love to hear your feedback and requests. support+timer@sola-air.com *If you don't receive a reply, please check your spam folder or email settings. *For bug reports, email lets us help you faster than reviews.

Screenshots

Calculator Advance Pro4 screens
Lepus Timer4 screens

Verdict

The call

The clearest difference is price: Lepus Timer at Free against Calculator Advance Pro's $4.99. Lepus Timer also leads on ads (none vs shown). Calculator Advance Pro's advantage is in-app purchases (none vs 1) and update cadence (fortnightly vs every 6 months). 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

CostPrice · In-app purchases · Ads · Monetization

Lepus Timer is free to download; Calculator Advance Pro costs $4.99 up front. Lepus Timer sells 1 one-off in-app purchase. Calculator Advance Pro asks for nothing beyond the download.

UpkeepUpdate frequency

Calculator Advance Pro ships an update fortnightly, Lepus Timer every 6 months. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.

Scorecard5 real differences · 5 level
Calculator Advance Pro versus Lepus Timer: the parameters behind the verdict, then further details
ParameterCalculator Advance ProLepus Timer
Price$4.99Free — better
Rating4.0 (5 ratings) — better—
Positive reviews71.4% of reviews—
Number of ratings5 — better—
Update frequencyFortnightly — betterEvery 6 months
AdsYesNo — better
In-app purchasesNo — betterYes
MonetizationPaid—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS10.0 — better15.6
Further details — not scored
Size32 MB72 MB
Age rating4+4+
DeveloperTakahiro IwataniSola, K.K.

In-app purchases

None

Calculator Advance Pro

No in-app purchases

1 purchases

Lepus Timer

One-time1
  • Full Version (Permanent)$0.99

Questions

Is Calculator Advance Pro free?
Calculator Advance Pro costs $4.99, with no in-app purchases.
Is Lepus Timer free?
Lepus Timer is free to download, with in-app purchases available.
Do Calculator Advance Pro or Lepus Timer have ads?
Calculator Advance Pro shows ads; Lepus Timer does not.
Which is updated more often, Calculator Advance Pro or Lepus Timer?
Calculator Advance Pro ships an update fortnightly, and Lepus Timer every 6 months. Most recently, Calculator Advance Pro was updated on October 24, 2026 and Lepus Timer on October 27, 2026.

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