# Plumbing Formulator vs Plumbers Tech App

The clearest difference is review sentiment: Plumbers Tech App at 100% against Plumbing Formulator's 9%. Plumbers Tech App also leads on in-app purchases (none vs 4) and rating (5.0 vs 4.6). Plumbing Formulator's advantage is update cadence (every 2 months vs every 30 months) and ratings volume (7 vs 2). 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. Plumbers Tech App asks for nothing beyond the download.

Plumbers Tech App holds the better App Store score, 5.0 against 4.6. Both are backed by a comparable volume of ratings — 7 and 2 respectively. Written reviews point the same way: 9% of Plumbing Formulator's written reviews are positive against 100% of Plumbers Tech App's.

Plumbing Formulator ships an update every 2 months, Plumbers Tech App every 30 months. The most recent releases landed on August 23, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | Plumbing Formulator | Plumbers Tech App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (7 ratings)](https://appshunter.io/ios/app/plumbing-formulator/id303497783/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/plumbers-tech-app/id1436971375/reviews)** |
| Number of ratings | **7** | 2 |
| Positive reviews | 9.1% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 30 months |
| Monetization | Free | Free |
| Size | 123 MB | 217 MB |
| Requires iOS | 18.6 | **9.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Historycentral.com](https://appshunter.io/developer/1744330560) | [Plumbers Supply Co](https://appshunter.io/developer/1436971374) |

## 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 |


### Plumbers Tech App

[App page](https://appshunter.io/ios/app/plumbers-tech-app/id1436971375)

Track individual technician performance and revenue streams for HVAC and plumbing services. Set monthly and annual goals, monitor daily progress in real-time, and generate reports on service call types and job sales. Helps identify revenue sources and optimize follow-up efforts.

**Highlights:** Technician performance tracking, Revenue stream analysis, Real-time goal monitoring, Service call type reporting, Job type sales tracking, Commission tracking, Customer data for marketing

**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 Plumbers Tech App free?

Plumbers Tech App is free to download, with no in-app purchases.

### Which has better reviews, Plumbing Formulator or Plumbers Tech App?

Plumbers Tech App is rated higher. Plumbing Formulator averages 4.6 out of 5 from 7 ratings, while Plumbers Tech App averages 5.0 from 2 ratings.

### Do Plumbing Formulator or Plumbers Tech App have ads?

Neither Plumbing Formulator nor Plumbers Tech App shows ads.

### Which is updated more often, Plumbing Formulator or Plumbers Tech App?

Plumbing Formulator ships an update every 2 months, and Plumbers Tech App every 30 months. Most recently, Plumbing Formulator was updated on August 23, 2026 and Plumbers Tech App on September 14, 2026.

---

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