# SpringRithm > Coilover suspension setup and tuning tool for desired loads and ride heights. (iPhone/iPad app by Benny Boudreaux.) - Source: https://appshunter.io/ios/app/springrithm/id1494993185 (this page in markdown: same URL + `.md`) - Developer: [Benny Boudreaux](https://appshunter.io/developer/1485335686) - Category: Utilities - Price: Free with in-app purchases - Rating: 4.40/5 from 10 App Store ratings · 2 written reviews indexed - Age rating: 4+ - Requires: iOS 17.0 · 211 MB - Languages: English - Released: 2020-10-12 - Data updated: 2026-06-04 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/springrithm/id1494993185/reviews.md ## What is SpringRithm? SpringRithm is for anyone who has a coilover suspension. With a purchase subscription, SpringRithm allows users to be able to set up their coilover suspensions to their desired loads at their desired ride heights. SpringRithm can assist users who do not have access to a coilover testing machine/Spring Smasher to get their coilovers correctly tuned to get the right loads. SpringRithm not only outputs the dynamic loads that the springs will see in travel, but also tells the user how to preload the coilover nut in order to achieve the set load/loads. For users who do have a coilover testing machine/Spring Smasher, SpringRithm will save tons of time by instantaneously allowing for spring rate and load changes in order to find new setups and figure out how their dynamic loads are changed. SpringRithm also has a built-in database of springs in order to determine if stack setups will coil bind so that users will know if their setup is even theoretically possible. Why guess on what height springs are needed for a setup when you can know! ## Key features - 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 ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Basic Use of SpringRithm | $4.99 | per month | | Yearly Subscription | $99.99 | per year | | Basic | $149.99 | per year | | Basic | $34.99 | per month | | Discount Yearly | $0.49 | per year | | Basic Use with Free Trial | $19.99 | per month | | Semi-Pro | $249.99 | per year | | Semi-Pro | $39.99 | per month | ## Recent user reviews (2 of 2) All indexed reviews: https://appshunter.io/ios/app/springrithm/id1494993185/reviews.md ### 5/5 — Matches my spring smasher perfectly *2023-04-07* Just downloaded the app after watching Kyle Larsons race and the app works perfect. It’s giving the same dynamic numbers as I’m used to seeing on the smasher. Can’t wait to use it at the race track! ### 1/5 — Won’t open *2023-01-16* Opens into a “restore purchase and terms of service page”. Have tried to re-install multiple times. **Developer response:** Hi, thank you for letting us know. We appreciate your feedback! We recently experience some issues with this that have since been resolved. If you are still having trouble please contact our service department at springrithm@gmail.com directly and we would be happy to help you. ## Frequently asked questions about SpringRithm ### What is SpringRithm used for? SpringRithm is designed to help users set up and tune their coilover suspensions. It calculates dynamic loads and preload adjustments needed to achieve desired ride heights and loads, assisting even without specialized testing machines. ### Does SpringRithm have ads? No, SpringRithm does not contain advertisements. The application is free to download and use, with in-app purchases available for its subscription plans. ### What are the subscription options for SpringRithm? SpringRithm offers several subscription plans, including a 'Basic Use' for $4.99/month, a 'Basic Use with Free Trial' for $19.99/month with a 14-day trial, and 'Basic' and 'Semi-Pro' tiers at $34.99/month and $39.99/month respectively. A 'Discount Yearly' option is also available for $0.49/year. ### How does SpringRithm help if I don't have a spring smasher? SpringRithm assists users without a coilover testing machine by calculating the dynamic loads the springs will experience during travel and providing instructions on how to preload the coilover nut to achieve the set loads. ### Can SpringRithm prevent coil binding? Yes, SpringRithm includes a built-in database of springs. This feature allows users to determine if their chosen spring stack setups will result in coil binding, ensuring theoretical possibility before installation. ### What devices is SpringRithm compatible with? SpringRithm is available for iPhone and iPad devices, indicated by its support for these platforms. ### How often is SpringRithm updated? The latest version of SpringRithm is 5.6, and it was last updated on September 30, 2024. This indicates a relatively active development cycle. ### What is the user sentiment for SpringRithm? SpringRithm has a strong user rating of 4.4 stars from 10 ratings, suggesting that users generally find the application helpful and effective for its intended purpose. ## Version history (last 5 releases) ### 5.6 — 2024-09-30 Added Off Road Support! ### 5.5.1 — 2024-04-02 WE HAVE GRAPHING!!! Get a visual representation of your setup without an expensive spring smasher! Bug Fixes ### 5.5 — 2024-02-28 WE HAVE GRAPHING!!!  Get a visual representation of your setup without an expensive spring smasher! ### 5.4 — 2024-01-19 Introducing Promo Codes! We will now be able to offer users promo codes to incentivize YOU to subscribe! We also added more helpful features through the app to explain different inputs. Finally, we added some support for dark mode. ### 5.3 — 2023-12-10 Introducing the new and improved SpringRithm interface! We took our simple and colorless old UI and brought it up to the next level, while also adding a new subscription tier- "Semi-Pro" which allows users to access our extensive spring database for coil bind information, as well as full data table outputs. Graphing is on the way! ## Apps similar to SpringRithm | App | Rating | Price | Category | | --- | --- | --- | --- | | [IntrinsiX Xone](https://appshunter.io/ios/app/intrinsix-xone/id6479975849) | 5.0 (1) | Free | Utilities | | [LinkControl](https://appshunter.io/ios/app/linkcontrol/id781651785) | 3.5 (2) | Free | Utilities | | [Longacre Connect](https://appshunter.io/ios/app/longacre-connect/id6449793297) | — | Free | Utilities | | [SetupCalculator](https://appshunter.io/ios/app/setupcalculator/id1660410234) | — | Free | Utilities | | [Fair Propane](https://appshunter.io/ios/app/fair-propane/id6446503712) | — | Free | Utilities | | [Rollout Calculator - RC DD car](https://appshunter.io/ios/app/rollout-calculator-rc-dd-car/id6451037467) | 4.9 (7) | Free | Utilities | ## Related topics [benny boudreaux](https://appshunter.io/ios/topics/benny-boudreaux) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-04.*