# PCalc vs Phase Calc

The clearest difference is price: Phase Calc at $1.99 against PCalc's $9.99. Phase Calc also leads on in-app purchases (none vs 4) and rating (5.0 vs 4.7). PCalc's advantage is ratings volume (770 vs 4) and chart position (#86 vs unranked). On update cadence and ads there is nothing between them.

PCalc costs $9.99 and Phase Calc $1.99 up front. PCalc sells 4 one-off in-app purchases. Phase Calc asks for nothing beyond the download.

Phase Calc holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: PCalc has 770 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 84% of PCalc's written reviews are positive against 100% of Phase Calc's.

Both ship on a similar rhythm, roughly every 6 weeks. The most recent releases landed on September 27, 2026 and August 1, 2026 respectively.

## The numbers

| Metric | PCalc | Phase Calc |
| --- | --- | --- |
| Price | $9.99 | **$1.99** |
| Rating | [4.7 (770 ratings)](https://appshunter.io/ios/app/pcalc/id284666222/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/phase-calc/id837266300/reviews)** |
| Number of ratings | **770** | 4 |
| Positive reviews | 83.6% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 weeks | Every 6 weeks |
| Monetization | **Free with in-app purchases** | Paid |
| Best chart rank | **#86** | — |
| Size | 81 MB | 13 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch, Vision Pro** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [TLA Systems Ltd.](https://appshunter.io/developer/284666225) | [Donnie Herman](https://appshunter.io/developer/837266303) |

## What reviewers say

### PCalc

[App page](https://appshunter.io/ios/app/pcalc/id284666222)

**Currently charting:** #86 Top Paid · Utilities (US App Store)

A powerful calculator designed for professionals and students, offering advanced features like RPN mode, multi-line display, and extensive unit conversions. It supports various number systems and includes an Apple Watch app for on-the-go calculations.

**Highlights:** Optional RPN mode, Multi-line display, Extensive unit conversions, Paper tape, Multiple undo/redo, Hexadecimal, octal, binary support, Apple Watch app

**Features:** Apple Watch app, iMessage stickers

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small Tip | $0.99 | one-time |
| Medium Tip | $1.99 | one-time |
| Large Tip | $4.99 | one-time |
| Enormous Tip | $9.99 | one-time |


### Phase Calc

[App page](https://appshunter.io/ios/app/phase-calc/id837266300)

This advanced engineering app performs complex electrical calculations for three-phase power systems. It offers tools for students, technicians, and engineers to analyze unbalanced systems, perform sequence transformations, and access reference libraries. Results can be easily exported for documentation and sharing.

**Highlights:** Symmetrical component analysis, Three-phase power system calculations, Phase-to-sequence and sequence-to-phase transformations, Polar and rectangular input support, Specialized calculators and reference libraries, Exportable results for documentation

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is PCalc free?

PCalc costs $9.99, and also offers in-app purchases.

### Is Phase Calc free?

Phase Calc costs $1.99, with no in-app purchases.

### Which has better reviews, PCalc or Phase Calc?

Phase Calc is rated higher. PCalc averages 4.7 out of 5 from 770 ratings, while Phase Calc averages 5.0 from 4 ratings.

### Do PCalc or Phase Calc have ads?

Neither PCalc nor Phase Calc shows ads.

### Which is updated more often, PCalc or Phase Calc?

PCalc ships an update every 6 weeks, and Phase Calc every 6 weeks. Most recently, PCalc was updated on September 27, 2026 and Phase Calc on August 1, 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.*