# Plumbing Formulator vs TouchStyle

The clearest difference is rating: Plumbing Formulator at 4.6 against TouchStyle's 4.0. Plumbing Formulator also leads on ratings volume (7 vs 1). TouchStyle's advantage is in-app purchases (none vs 4) and review sentiment (25% vs 9%). On price, ads, monetization model and device support there is nothing between them.

Both are free to download. Plumbing Formulator sells 4 one-off in-app purchases. TouchStyle asks for nothing beyond the download.

Plumbing Formulator holds the better App Store score, 4.6 against 4.0. That said, the two scores are not equally well evidenced: Plumbing Formulator has 7 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 9% of Plumbing Formulator's written reviews are positive against 25% of TouchStyle's, so the app with the better star average is not the one people write more warmly about.

Plumbing Formulator ships an update every 2 months, TouchStyle every 3 weeks. The most recent releases landed on September 26, 2026 and June 19, 2026 respectively.

## The numbers

| Metric | Plumbing Formulator | TouchStyle |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (7 ratings)](https://appshunter.io/ios/app/plumbing-formulator/id303497783/reviews)** | [4.0 (1 ratings)](https://appshunter.io/ios/app/touchstyle/id993594011/reviews) |
| Number of ratings | **7** | 1 |
| Positive reviews | 9.1% of reviews | **25.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 123 MB | 22 MB |
| Requires iOS | 18.6 | **8.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Historycentral.com](https://appshunter.io/developer/1744330560) | [Bank Kerjasama Rakyat Malaysia Berhad](https://appshunter.io/developer/993594010) |

## What reviewers say

### Plumbing Formulator

[App page](https://appshunter.io/ios/app/plumbing-formulator/id303497783)

This professional calculator app provides over 200 formulas, calculators, and reference materials for plumbers, HVAC technicians, and mechanical contractors. It covers a wide range of calculations for water flow, piping, drainage, water heaters, pumps, and more, all in one pocket-sized tool.

**Highlights:** Over 200 formulas and calculators, Water flow and supply calculations, Pipe and piping calculations, Drainage and venting calculations, Water heater and pump calculations, Reference charts and code books, Pipe cut list optimizer

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Version | $1.99 | one-time |
| Pro Purchase | $3.99 | one-time |
| Starter | $5.99 | one-time |
| Growth | $9.99 | one-time |


### TouchStyle

[App page](https://appshunter.io/ios/app/touchstyle/id993594011)

Manage your financial lifestyle with this app from Bank Rakyat. It offers tools to help you track and understand your spending habits.

**Highlights:** Financial lifestyle management, Spending habit tracking, Personal finance tools, Bank Rakyat initiative

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Plumbing Formulator free?

Plumbing Formulator is free to download, with in-app purchases available.

### Is TouchStyle free?

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

### Which has better reviews, Plumbing Formulator or TouchStyle?

Plumbing Formulator is rated higher. Plumbing Formulator averages 4.6 out of 5 from 7 ratings, while TouchStyle averages 4.0 from 1 ratings.

### Do Plumbing Formulator or TouchStyle have ads?

Neither Plumbing Formulator nor TouchStyle shows ads.

### Which is updated more often, Plumbing Formulator or TouchStyle?

Plumbing Formulator ships an update every 2 months, and TouchStyle every 3 weeks. Most recently, Plumbing Formulator was updated on September 26, 2026 and TouchStyle on June 19, 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.*