# SpringRithm vs CTE Calculator

The clearest difference is rating: CTE Calculator at 5.0 against SpringRithm's 4.4. CTE Calculator also leads on in-app purchases (none vs 7) and iOS requirement (13.4 vs 17.0). SpringRithm's advantage is update cadence (every 2 months vs every 15 months) and ratings volume (10 vs 1). On price, ads and device support there is nothing between them.

Both are free to download. SpringRithm sells 7 in-app purchases, starting at $0.49 per year. CTE Calculator asks for nothing beyond the download.

CTE Calculator holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: SpringRithm has 10 ratings behind it against 1, so its average is the more settled of the two.

SpringRithm ships an update every 2 months, CTE Calculator every 15 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | SpringRithm | CTE Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (10 ratings)](https://appshunter.io/ios/app/springrithm/id1494993185/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/cte-calculator/id1535102492/reviews)** |
| Number of ratings | **10** | 1 |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 15 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 211 MB | 24 MB |
| Requires iOS | 17.0 | **13.4** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Benny Boudreaux](https://appshunter.io/developer/1485335686) | [Verisurf](https://appshunter.io/developer/468050982) |

## What reviewers say

### SpringRithm

[App page](https://appshunter.io/ios/app/springrithm/id1494993185)

This app helps users set up coilover suspensions for desired loads and ride heights. It calculates dynamic loads and preload adjustments, even without specialized testing equipment. It also checks for coil binding issues with its spring database.

**Highlights:** Set desired loads and ride heights, Calculate dynamic spring loads, Determine preload adjustments, Check for coil binding, Access spring database, Save time on setup changes

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Discount Yearly | $0.49 | per year |
| Basic Use of SpringRithm | $4.99 | per month |
| Basic | $34.99 | per month |
| Semi-Pro | $39.99 | per month |
| Yearly Subscription | $99.99 | per year |
| Basic | $149.99 | per year |
| Semi-Pro | $249.99 | per year |


### CTE Calculator

[App page](https://appshunter.io/ios/app/cte-calculator/id1535102492)

This utility app helps determine the change in length of common manufacturing materials caused by temperature fluctuations. It provides quick calculations for various materials, making it a handy tool for engineers and manufacturers on the go.

**Highlights:** Temperature effect calculations, Change in length determination, Common manufacturing materials, Portable utility, iOS compatible

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SpringRithm free?

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

### Is CTE Calculator free?

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

### Which has better reviews, SpringRithm or CTE Calculator?

CTE Calculator is rated higher. SpringRithm averages 4.4 out of 5 from 10 ratings, while CTE Calculator averages 5.0 from 1 ratings.

### Do SpringRithm or CTE Calculator have ads?

Neither SpringRithm nor CTE Calculator shows ads.

### Which is updated more often, SpringRithm or CTE Calculator?

SpringRithm ships an update every 2 months, and CTE Calculator every 15 months. Most recently, SpringRithm was updated on November 3, 2026 and CTE Calculator on November 3, 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.*