# SSC Spring Engineering vs Fuel M

The clearest difference is update cadence: Fuel M at every 3 days against SSC Spring Engineering's every 6 months. Fuel M also leads on iOS requirement (12.0 vs 15.1). On price, ads, in-app purchases and device support there is nothing between them.

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

SSC Spring Engineering ships an update every 6 months, Fuel M every 3 days. The most recent releases landed on October 24, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | SSC Spring Engineering | Fuel M |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (28 ratings)](https://appshunter.io/ios/app/ssc-spring-engineering/id1438112209/reviews)** | — |
| Number of ratings | **28** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 3 days** |
| Monetization | Free | — |
| Size | 38 MB | 22 MB |
| Requires iOS | 15.1 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Service Spring Corporation](https://appshunter.io/developer/342694497) | [Fluid Fortress Technologies](https://appshunter.io/developer/1757629184) |

## What reviewers say

### SSC Spring Engineering

[App page](https://appshunter.io/ios/app/ssc-spring-engineering/id1438112209)

This utility app assists with spring engineering calculations, including conversions, new designs, and comparisons. It helps determine spring and drum specifications for various applications, such as rolling steel doors, and calculates lifting capacities.

**Highlights:** Spring conversion, New spring engineering, Drum specification comparison, IPPT spring calculation, Rolling steel door spring design, Approximate pull calculation, Maximum lift capacity determination

**Features:** macOS Compatibility

**In-app purchases:** none


### Fuel M

[App page](https://appshunter.io/ios/app/fuel-m-16/id6738392484)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SSC Spring Engineering free?

SSC Spring Engineering is free to download, with no in-app purchases.

### Is Fuel M free?

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

### Do SSC Spring Engineering or Fuel M have ads?

Neither SSC Spring Engineering nor Fuel M shows ads.

### Which is updated more often, SSC Spring Engineering or Fuel M?

SSC Spring Engineering ships an update every 6 months, and Fuel M every 3 days. Most recently, SSC Spring Engineering was updated on October 24, 2026 and Fuel M on October 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.*