# PCalc Lite vs MR. CALC

The clearest difference is in-app purchases: MR. CALC at none against PCalc Lite's 11. MR. CALC also leads on rating (4.8 vs 4.4) and update cadence (every 10 days vs every 2 months). PCalc Lite's advantage is ads (none vs shown) and ratings volume (214 vs 39). On price and device support there is nothing between them.

Both are free to download. PCalc Lite sells 11 one-off in-app purchases. MR. CALC asks for nothing beyond the download.

MR. CALC holds the better App Store score, 4.8 against 4.4. That said, the two scores are not equally well evidenced: PCalc Lite has 214 ratings behind it against 39, so its average is the more settled of the two. Written reviews point the same way: 82% of PCalc Lite's written reviews are positive against 100% of MR. CALC's.

PCalc Lite ships an update every 2 months, MR. CALC every 10 days. The most recent releases landed on October 18, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | PCalc Lite | MR. CALC |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (214 ratings)](https://appshunter.io/ios/app/pcalc-lite/id300311831/reviews) | **[4.8 (39 ratings)](https://appshunter.io/ios/app/mr-calc/id1498355556/reviews)** |
| Number of ratings | **214** | 39 |
| Positive reviews | 82.4% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 10 days** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 76 MB | 5 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [TLA Systems Ltd.](https://appshunter.io/developer/284666225) | [Yuma Kitasei](https://appshunter.io/developer/1199831834) |

## What reviewers say

### PCalc Lite

[App page](https://appshunter.io/ios/app/pcalc-lite/id300311831)

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.

**Highlights:** Optional RPN mode, Multiple undo and redo, Unit conversions and constants, Two stylish themes, Apple Watch app

**Features:** Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Theme Pack | $0.99 | one-time |
| Power User Pack | $0.99 | one-time |
| Multiple Line Pack | $0.99 | one-time |
| Conversion Pack | $0.99 | one-time |
| Small Tip | $0.99 | one-time |
| Medium Tip | $1.99 | one-time |
| Programmer Pack | $2.99 | one-time |
| Engineer Pack | $2.99 | one-time |
| Large Tip | $4.99 | one-time |
| Complete Pack | $9.99 | one-time |
| Enormous Tip | $9.99 | one-time |

**What reviewers like**

- 🚀 Fast and responsive
- 👍 Clean and intuitive interface
- 💡 Customizable themes and settings
- 🚀 Efficient performance
- 👍 Useful conversion tools

**What reviewers complain about**

- 🐛 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

**Reported bugs**

- Calculations sometimes produce unexpected results
- Upside-down text censorship feature is problematic
- Purchased features not always accessible on Apple Watch

**Requested features**

- 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


### MR. CALC

[App page](https://appshunter.io/ios/app/mr-calc/id1498355556)

A straightforward calculator app for iPhone and iPad that displays formulas as you calculate. It offers seven different calculator types, easily switchable by swiping, making it convenient for managing multiple calculations simultaneously.

**Highlights:** Formula display during calculation, Seven different calculator types, Swipe to switch calculators, Simple and easy to use, Available for iPhone and iPad

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PCalc Lite free?

PCalc Lite is free to download, with in-app purchases available.

### Is MR. CALC free?

MR. CALC is free to download, with no in-app purchases.

### Which has better reviews, PCalc Lite or MR. CALC?

MR. CALC is rated higher. PCalc Lite averages 4.4 out of 5 from 214 ratings, while MR. CALC averages 4.8 from 39 ratings.

### Do PCalc Lite or MR. CALC have ads?

MR. CALC shows ads; PCalc Lite does not.

### Which is updated more often, PCalc Lite or MR. CALC?

PCalc Lite ships an update every 2 months, and MR. CALC every 10 days. Most recently, PCalc Lite was updated on October 18, 2026 and MR. CALC on October 4, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*