# PCalc Lite vs Watch Calculator 87

The clearest difference is in-app purchases: Watch Calculator 87 at none against PCalc Lite's 10. Watch Calculator 87 also leads on iOS requirement (12.0 vs 15.0). PCalc Lite's advantage is update cadence (every 2 months vs every 32 months) and ratings volume (214 vs 6). On price, ads and device support there is nothing between them.

Both are free to download. PCalc Lite sells 10 one-off in-app purchases. Watch Calculator 87 asks for nothing beyond the download.

PCalc Lite holds the better App Store score, 4.4 against 4.2. That said, the two scores are not equally well evidenced: PCalc Lite has 214 ratings behind it against 6, 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 67% of Watch Calculator 87's.

PCalc Lite ships an update every 2 months, Watch Calculator 87 every 32 months. The most recent releases landed on October 31, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | PCalc Lite | Watch Calculator 87 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (214 ratings)](https://appshunter.io/ios/app/pcalc-lite/id300311831/reviews)** | [4.2 (6 ratings)](https://appshunter.io/ios/app/watch-calculator-87/id1271115053/reviews) |
| Number of ratings | **214** | 6 |
| Positive reviews | **82.5% of reviews** | 66.7% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 32 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 79 MB | 31 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPod, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [TLA Systems Ltd.](https://appshunter.io/developer/284666225) | [Jose Maria Ortega Aguilera](https://appshunter.io/developer/909983037) |

## 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, iPhone Duo support

**In-app purchases (10)**

| 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 |

**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


### Watch Calculator 87

[App page](https://appshunter.io/ios/app/watch-calculator-87/id1271115053)

A straightforward calculator designed specifically for your Apple Watch. Perform calculations quickly and easily directly from your wrist, with a simple interface for everyday math needs.

**Highlights:** Calculator for Apple Watch, Simple interface, Quick calculations, Wrist-based operation

**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 Watch Calculator 87 free?

Watch Calculator 87 is free to download, with no in-app purchases.

### Which has better reviews, PCalc Lite or Watch Calculator 87?

PCalc Lite is rated higher. PCalc Lite averages 4.4 out of 5 from 214 ratings, while Watch Calculator 87 averages 4.2 from 6 ratings.

### Do PCalc Lite or Watch Calculator 87 have ads?

Neither PCalc Lite nor Watch Calculator 87 shows ads.

### Which is updated more often, PCalc Lite or Watch Calculator 87?

PCalc Lite ships an update every 2 months, and Watch Calculator 87 every 32 months. Most recently, PCalc Lite was updated on October 31, 2026 and Watch Calculator 87 on November 3, 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.*