# Builder's Formulator vs eCrimp

The clearest difference is review sentiment: eCrimp at 50% against Builder's Formulator's 0%. eCrimp also leads on rating (4.6 vs 2.0) and in-app purchases (none vs 1). On price, update cadence, ads and monetization model there is nothing between them.

Both are free to download. Builder's Formulator sells 1 one-off in-app purchase. eCrimp asks for nothing beyond the download.

eCrimp holds the better App Store score, 4.6 against 2.0. Both are backed by a comparable volume of ratings — 3 and 11 respectively. Written reviews point the same way: 0% of Builder's Formulator's written reviews are positive against 50% of eCrimp's.

Builder's Formulator ships an update every 2 months, eCrimp every 3 months. Both last shipped on October 8, 2026.

## The numbers

| Metric | Builder's Formulator | eCrimp |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.0 (3 ratings)](https://appshunter.io/ios/app/builders-formulator/id306247596/reviews) | **[4.6 (11 ratings)](https://appshunter.io/ios/app/ecrimp/id647429185/reviews)** |
| Number of ratings | 3 | **11** |
| Positive reviews | 0.0% of reviews | **50.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Free | Free |
| Size | 48 MB | 74 MB |
| Requires iOS | 26.4 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Historycentral.com](https://appshunter.io/developer/1744330560) | [Gates Corporation](https://appshunter.io/developer/438346489) |

## What reviewers say

### Builder's Formulator

[App page](https://appshunter.io/ios/app/builders-formulator/id306247596)

This comprehensive tool provides over 2,600 formulas, code charts, and technical drawings for construction professionals. It covers calculations for structural engineering, electrical, plumbing, HVAC, and financial aspects of building projects. Includes unit conversions and ADA accessibility references.

**Highlights:** Over 2,600 formulas, Plumbing code charts, Technical drawings, ADA accessibility references, Unit conversions, Save and revisit calculations, Mark favorites

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Builder Pro | $2.99 | one-time |


### eCrimp

[App page](https://appshunter.io/ios/app/ecrimp/id647429185)

Access the latest crimp specifications for hydraulic and industrial hose products. Quickly find the necessary details to create factory-quality hose assemblies for your customers.

**Highlights:** Up-to-date crimp specifications, Hydraulic hose data, Industrial hose data, Factory-quality assembly guidance, Quick spec lookup

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

**In-app purchases:** none


## Frequently asked questions

### Is Builder's Formulator free?

Builder's Formulator is free to download, with in-app purchases available.

### Is eCrimp free?

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

### Which has better reviews, Builder's Formulator or eCrimp?

eCrimp is rated higher. Builder's Formulator averages 2.0 out of 5 from 3 ratings, while eCrimp averages 4.6 from 11 ratings.

### Do Builder's Formulator or eCrimp have ads?

Neither Builder's Formulator nor eCrimp shows ads.

### Which is updated more often, Builder's Formulator or eCrimp?

Builder's Formulator ships an update every 2 months, and eCrimp every 3 months. Most recently, Builder's Formulator was updated on October 8, 2026 and eCrimp on October 8, 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.*