LinkControl vs SpringRithm
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
LinkControl
This utility app acts as an interface for controlling physical devices like lights and motors. It downloads button definitions from a server and sends button press identifiers back to the server, which then determines the action.
- Control lights, dimmers, and motors
- Button definition downloads
- Button press identification
- Server-based device control
- Customizable button layouts
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LinkControl is an automation application that can be used to control lights, dimmers, motors and other physical devices. This application is essentially a button processing application that needs to be paired with a server component that ultimately controls the physical devices. This application downloads button definitions from the server application and when a button is pressed a button identifier is returned to the server indicating which button was pressed. With that information the server decides the appropriate next step. LinkControl has no knowledge of the overall process as it just handles button definitions and button presses.
SpringRithm
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.
- 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
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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!
Screenshots
Verdict
The clearest difference is rating: SpringRithm at 4.4 against LinkControl's 3.5. SpringRithm also leads on update cadence (every 2 months vs every 18 months) and ratings volume (10 vs 2). LinkControl's advantage is in-app purchases (none vs 8). On price, ads, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. SpringRithm sells 8 in-app purchases, starting at $0.49 per year. LinkControl asks for nothing beyond the download.
SpringRithm holds the better App Store score, 4.4 against 3.5. That said, the two scores are not equally well evidenced: SpringRithm has 10 ratings behind it against 2, so its average is the more settled of the two.
LinkControl ships an update every 18 months, SpringRithm every 2 months. The most recent releases landed on June 1, 2026 and September 8, 2026 respectively.
| Parameter | LinkControl | SpringRithm |
|---|---|---|
| Price | Free | Free |
| Rating | 3.5 (2 ratings) | 4.4 (10 ratings) — better |
| Positive reviews | — | 50.0% of reviews |
| Number of ratings | 2 | 10 — better |
| Update frequency | Every 18 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 18.6 | 17.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 211 MB |
| Age rating | 4+ | 4+ |
| Developer | River Rock Logic | Benny Boudreaux |
Customer experience
LinkControl
SpringRithm
In-app purchases
LinkControl
No in-app purchases
SpringRithm
- Discount Yearly$0.491 Year
- Basic Use of SpringRithm$4.991 Month
- Basic Use with Free Trial14 Days trial$19.991 Month
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- Basic$34.991 Month
- Semi-Pro$39.991 Month
- Yearly Subscription$99.991 Year
- Basic14 Days trial$149.991 Year
- Semi-Pro$249.991 Year









