# Pipe Trades Pro Calc vs SM Calculator

The clearest difference is in-app purchases: SM Calculator at none against Pipe Trades Pro Calc's 6. SM Calculator also leads on update cadence (daily vs every 7 months). Pipe Trades Pro Calc's advantage is ratings volume (4.4K vs 2) and chart position (#198 vs unranked). On price, rating and ads there is nothing between them.

Both are free to download. Pipe Trades Pro Calc sells 2 in-app purchases, starting at $4.99 per month. SM Calculator asks for nothing beyond the download.

SM Calculator holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Pipe Trades Pro Calc has 4.4K ratings behind it against 2, so its average is the more settled of the two.

Pipe Trades Pro Calc ships an update every 7 months, SM Calculator daily. The most recent releases landed on November 7, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Pipe Trades Pro Calc | SM Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (4.4K ratings)](https://appshunter.io/ios/app/pipe-trades-pro-calc/id596142100/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/sm-calculator/id1663949657/reviews)** |
| Number of ratings | **4.4K** | 2 |
| Positive reviews | 42.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 7 months | **Daily** |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | **#198** | — |
| Size | 51 MB | 8 MB |
| Requires iOS | **14.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [Calculated Industries](https://appshunter.io/developer/370406449) | [Body Culture](https://appshunter.io/developer/910681467) |

## What reviewers say

### Pipe Trades Pro Calc

[App page](https://appshunter.io/ios/app/pipe-trades-pro-calc/id596142100)

**Currently charting:** #198 Top Grossing · Utilities (US App Store)

This app provides advanced calculation tools and comprehensive data for pipe trade professionals. It streamlines workflows for pipefitters, welders, and steamfitters with features for measurements, fluid dynamics, and material specifications. Designed for efficiency and accuracy, it works offline for on-site use.

**Highlights:** Advanced measurement calculations, Fluid dynamics and pressure analysis, Comprehensive pipe data access, Offline functionality, User-centric interface, Material and dimension options

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month Full Access | $4.99 | per month |
| 1 Year Full Access | $39.99 | per year |

**What reviewers like**

- 🔢 Useful calculator tool
- 🧠 Helpful for pipe fitters and welders
- 📱 Convenient to have on mobile device
- 🔍 Accurate calculations

**What reviewers complain about**

- 💰 Subscription model is too expensive
- 🔒 Requires internet connection to verify subscription
- 🔄 Used to be a one-time purchase
- 🤔 Confusing transition from one-time to subscription

**Reported bugs**

- App freezes or stops working after updates
- Calculation errors with fractions
- Issues with reinstalling or transferring purchases

**Requested features**

- Ability to use app without subscription
- Support for larger pipe sizes
- Add a back/undo button
- Rotate screen orientation


### SM Calculator

[App page](https://appshunter.io/ios/app/sm-calculator/id1663949657)

Easily convert between standard and metric units for calculations. Supports decimal and fraction values in inches, and millimeters. Tap values to see equivalents or add them to a pin list for quick access.

**Highlights:** Cross-unit calculations, Decimal and fraction support, Metric unit conversion, Tap to convert values, Pin list for quick access, Conversion table

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

**In-app purchases:** none


## Frequently asked questions

### Is Pipe Trades Pro Calc free?

Pipe Trades Pro Calc is free to download, with in-app purchases available.

### Is SM Calculator free?

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

### Which has better reviews, Pipe Trades Pro Calc or SM Calculator?

SM Calculator is rated higher. Pipe Trades Pro Calc averages 4.8 out of 5 from 4.4K ratings, while SM Calculator averages 5.0 from 2 ratings.

### Do Pipe Trades Pro Calc or SM Calculator have ads?

Neither Pipe Trades Pro Calc nor SM Calculator shows ads.

### Which is updated more often, Pipe Trades Pro Calc or SM Calculator?

Pipe Trades Pro Calc ships an update every 7 months, and SM Calculator daily. Most recently, Pipe Trades Pro Calc was updated on November 7, 2026 and SM Calculator 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.*