PCalc Lite vs Calculator!
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PCalc Lite
This free scientific calculator offers essential features like RPN mode, unit conversions, and multiple undo/redo. It provides a taste of a more powerful version, with optional in-app purchases for expanded functionality.
- Optional RPN mode
- Multiple undo and redo
- Unit conversions and constants
- Two stylish themes
- Apple Watch app
Read full descriptionHide full description
PCalc is the powerful choice for scientists, engineers, students, programmers, or indeed anybody looking for a feature rich calculator. It includes an optional RPN mode and multi-line display, a choice of button layouts, an extensive set of unit conversions and constants, a paper tape, multiple undo and redo, engineering and scientific notation, as well as support for hexadecimal, octal, and binary calculations.PCalc Lite is a fully functional and free taste of our very popular scientific calculator. It includes an optional RPN mode, multiple undo and redo, unit conversions and constants, as well as two stylish themes and our highly praised design. A great choice for your new iPad! If you like what you see, the full version has many more settings and themes, a paper tape, engineering and scientific notation, and full support for hexadecimal, octal, and binary calculations. You can also now purchase extra features directly from inside PCalc Lite. Buy them individually, or buy everything. Includes an Apple Watch app, so you can calculate on your wrist!
Calculator!
This app offers a versatile calculator experience with both standard and scientific modes. Customize its appearance, use it in any orientation, and access additional tools like a notes tab and calculation history. It's designed for students and professionals needing accurate calculations.
- Standard and scientific calculator modes
- Customizable look (iPad only)
- Portrait and landscape orientation
- Notes and drawing tab
- Calculation history
- AirPrint and email support
Read full descriptionHide full description
Calculator! is an easy to use, beautifully packaged calculator for your iPad or iPhone that includes both a standard and scientific calculator. Our versatile calculator app allows you to: • Customize the look of the application by changing the leather color and background texture (iPad Only) • Choose between a basic calculator or scientific calculator with more than 30 scientific operations • Use both calculators in portrait or landscape mode • Take notes or draw with your finger on the Notes Tab • View and edit a history of your calculations on the History Tab • Use Airprint to print your notes or your calculation history • Email your calculation history or notes from within the app • View an equation of your current calculations • Calculate with accuracy to more than 75 significant digits • Use parenthesis and nested parenthesis in your calculations We wrote Calculator! to be the perfect calculator for budding math students and professionals alike.
Screenshots
Verdict
The clearest difference is price: PCalc Lite at Free against Calculator!'s $0.99. Calculator!'s advantage is rating (4.8 vs 4.4) and ratings volume (4.3K vs 214). On review sentiment, update cadence, ads and in-app purchases 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
PCalc Lite is free to download; Calculator! costs $0.99 up front. PCalc Lite sells 11 one-off in-app purchases and Calculator! sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Calculator! holds the better App Store score, 4.8 against 4.4. That said, the two scores are not equally well evidenced: Calculator! has 4.3K ratings behind it against 214, so its average is the more settled of the two. Written reviews split almost evenly too, at 83% and 83% positive.
PCalc Lite ships an update every 2 months, Calculator! every 3 months. The most recent releases landed on October 13, 2026 and October 14, 2026 respectively.
| Parameter | PCalc Lite | Calculator! |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 4.4 (214 ratings) | 4.8 (4.3K ratings) — better |
| Positive reviews | 82.6% of reviews | 83.3% of reviews — better |
| Number of ratings | 214 | 4.3K — better |
| Update frequency | Every 2 months — better | Every 3 months |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | — | #158 — better |
| Devices | iPhone, iPad, iPod, Apple Watch — better | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 9.0 — better |
| Further details — not scored | ||
| Size | 76 MB | 56 MB |
| Age rating | 4+ | 4+ |
| Developer | TLA Systems Ltd. | 7th Gear |
Customer experience
PCalc Lite
Calculator!
User reviews
PCalc Lite
From 214 App Store ratingsWhat we love
- 🚀 Fast and responsive
- 👍 Clean and intuitive interface
- 💡 Customizable themes and settings
- 🚀 Efficient performance
- 👍 Useful conversion tools
Room to improve
- 🐛 Occasional lags and crashes
- 🔒 Lack of dark mode support
- 🔒 Inconsistent icon appearance after upgrades
- 🔒 Limitations in RPN mode on Apple Watch
- 🔒 Lack of financial calculator functions
Calculator!
From 4.3K App Store ratingsWhat we love
- 💰 Reasonably priced
- 📝 Useful note-taking features
- 📊 Keeps a calculation history
- 🎨 Customizable appearance
- 🔍 Helpful log and tracking features
Room to improve
- 🤔 Confusing input box behavior
- 🔍 Lack of graphing features
- 🔍 Missing some scientific calculator buttons
- 🔍 Inconsistent widget behavior
- 🔍 Issues with split-screen and resizing
Bugs and requests
PCalc Lite
Reported bugs
3 issues- Calculations sometimes produce unexpected results
- Upside-down text censorship feature is problematic
- Purchased features not always accessible on Apple Watch
Requested features
4 requests- Add option to display thousands separators
- Implement a history function to review past calculations
- Provide more customization options for the widget
- Add support for sexagesimal angle input and conversion
Calculator!
Reported bugs
4 issues- Widget doesn't work as expected
- Calculation history not available in portrait mode
- Resizing issues on iPad Pro
- Slow startup times on older devices
Requested features
5 requests- Add unit conversion tools
- Improve calculation expression logic
- Allow notes to be viewed in portrait mode
- Implement a scratch paper area on the right side
- Add ability to sync data across devices
In-app purchases
PCalc Lite
- Theme Pack$0.99
- Power User Pack$0.99
- Multiple Line Pack$0.99
Show 8 moreShow fewer
- Conversion Pack$0.99
- Small Tip$0.99
- Medium Tip$1.99
- Programmer Pack$2.99
- Engineer Pack$2.99
- Large Tip$4.99
- Complete Pack$9.99
- Enormous Tip$9.99
Calculator!
- Calculator$0.99
