# Springulator Spring Calculator vs HHPD Service Support

The clearest difference is update cadence: HHPD Service Support at every 4 months against Springulator Spring Calculator's every 27 months. Springulator Spring Calculator's advantage is rating (4.5 vs 4.2) and iOS requirement (12.0 vs 15.0). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Springulator Spring Calculator holds the better App Store score, 4.5 against 4.2. Both are backed by a comparable volume of ratings — 6 and 6 respectively.

Springulator Spring Calculator ships an update every 27 months, HHPD Service Support every 4 months. The most recent releases landed on October 26, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Springulator Spring Calculator | HHPD Service Support |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (6 ratings)](https://appshunter.io/ios/app/springulator-spring-calculator/id586301011/reviews)** | [4.2 (6 ratings)](https://appshunter.io/ios/app/hhpd-service-support/id1458643970/reviews) |
| Number of ratings | 6 | 6 |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 27 months | **Every 4 months** |
| Monetization | Free | Free |
| Size | 73 MB | 397 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Newcomb Spring Corp](https://appshunter.io/developer/586301014) | [Hormann Flexon LLC](https://appshunter.io/developer/1458643969) |

## What reviewers say

### Springulator Spring Calculator

[App page](https://appshunter.io/ios/app/springulator-spring-calculator/id586301011)

This reference tool helps engineers, designers, and purchasing agents calculate various spring parameters. It supports compression, extension, and torsion springs, offering detailed stress charting and material selection.

**Highlights:** Compression, extension, and torsion spring calculations, Stress charting and material guidelines, Calculations based on selected materials, English and metric measurements, Adjustable initial tension for extension springs, Emailable and quotable results

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

**In-app purchases:** none


### HHPD Service Support

[App page](https://appshunter.io/ios/app/hhpd-service-support/id1458643970)

This app offers trained commercial door installers and service professionals installation and troubleshooting resources. It includes searchable fault codes, parameter codes, quick start tips, common issues, schematics, and diagrams. Access online manuals and the help desk easily.

**Highlights:** Searchable fault codes, Parameter code lookup, Quick start installation tips, Common issue troubleshooting, Schematics and diagrams, Access to online manuals, Help desk contact

**In-app purchases:** none


## Frequently asked questions

### Is Springulator Spring Calculator free?

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

### Is HHPD Service Support free?

HHPD Service Support is free to download, with no in-app purchases.

### Which has better reviews, Springulator Spring Calculator or HHPD Service Support?

Springulator Spring Calculator is rated higher. Springulator Spring Calculator averages 4.5 out of 5 from 6 ratings, while HHPD Service Support averages 4.2 from 6 ratings.

### Do Springulator Spring Calculator or HHPD Service Support have ads?

Neither Springulator Spring Calculator nor HHPD Service Support shows ads.

### Which is updated more often, Springulator Spring Calculator or HHPD Service Support?

Springulator Spring Calculator ships an update every 27 months, and HHPD Service Support every 4 months. Most recently, Springulator Spring Calculator was updated on October 26, 2026 and HHPD Service Support on October 17, 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.*