# SHv4 Calculator > Calculate vehicle speedometer error and configure SpeedoHealer modules. (iPhone/iPad app by HealTech Electronics Ltd..) - Source: https://appshunter.io/ios/app/shv4-calculator/id979817071 (this page in markdown: same URL + `.md`) - Developer: [HealTech Electronics Ltd.](https://appshunter.io/developer/979817070) - Category: Utilities - Price: Free - Rating: 5.00/5 from 3 App Store ratings · 3 written reviews indexed - Age rating: 4+ - Requires: iOS 12.0 · 1 MB - Languages: American English - Released: 2015-04-02 - Data updated: 2026-06-11 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/shv4-calculator/id979817071/reviews.md ## What is SHv4 Calculator? Use this free application to calculate the speedometer error of your vehicle and generate setup instructions for your SpeedoHealer v4 module. You can also access troubleshooting information. After installation, it does not use internet connection, it's Ad-free. On most modern motorcycles, with factory speedometer error being as high as 10%, even a modest sprocket gearing change can have the speedometer off by 15%. The sprocket change will also cause higher odometer reading, creating a negative resale factor for no valid reason. The SpeedoHealer is an inexpensive, convenient and very simple way to fix your speedo and odo. Compatible with all motorcycles with non cable driven speedometer. Plug 'n go SH kits are available for selected Harley, Honda, Hyosung, Buell, Ducati, Kawasaki, KTM, Suzuki, Triumph and Yamaha motorcycles. The SpeedoHealer can also be installed on cars which have a 2- or 3-wire speed sensor. Please check out our website for other cool and useful products for your motorcycle. ## Key features - Calculate speedometer error - Generate SpeedoHealer v4 setup instructions - Access troubleshooting information - Ad-free experience - Offline functionality - Compatible with most motorcycles and cars ## Recent user reviews (3 of 3) All indexed reviews: https://appshunter.io/ios/app/shv4-calculator/id979817071/reviews.md ### 5/5 — Simply Amazing! Literally... *2019-02-19* I recently installed a Speedo Healer V4 on my 2011 Daytona 675R, I bought mine with the choice of memory banks A&B rather than the top speed recall feature so as I can have 2 setups available at the flick of a switch. I downloaded this app and followed the step by step instructions to calibrate the Speedo Healer using the information on my sprocket change, it was so easy and clear to follow. The installation for the Speedo Healer itself wasn’t too bad - very easy once I’d identified my speed sensor, the Speedo Healer kit was perfect in regards to quality, cable length etc. I am so impressed with both the app and the Speedo Healer itself I would really recommend it to anyone. ### 5/5 — Worked great *2017-11-18* My 07 Busa was off by 20mph Bought the hardware needed easy to hook up to my bike downloaded this app Followed the instructions Given fixed my problem tested it out with a GPS definitely recommend the products this is better than spending $400-$500 For a new sprocket and chain plus labor ### 1/5 — Waiting for an update *2015-09-22* App doesn't open on my IPod so I'm hoping a update will correct this. ## Frequently asked questions about SHv4 Calculator ### What is SHv4 Calculator? SHv4 Calculator is a free utility app designed to help you calculate your vehicle's speedometer error and generate setup instructions for the SpeedoHealer v4 module. It also provides troubleshooting information. ### Does SHv4 Calculator have ads? No, SHv4 Calculator is ad-free. The description explicitly states that after installation, it does not use internet connection and is Ad-free. ### What devices is SHv4 Calculator compatible with? SHv4 Calculator is compatible with iPhone, iPad, and iPod devices. It is designed for vehicles with non-cable driven speedometers, including most modern motorcycles and cars with 2- or 3-wire speed sensors. ### How often is SHv4 Calculator updated? The latest version of SHv4 Calculator is 1.2.1, which was last updated on January 21, 2025. This indicates a recent update, suggesting ongoing support and maintenance. ### What is the age rating for SHv4 Calculator? SHv4 Calculator has an age rating of 4+. This means it is suitable for users aged 4 and above, with no content restrictions. ### Can SHv4 Calculator be used offline? Yes, SHv4 Calculator can be used offline. The app description mentions that after installation, it does not use an internet connection. ### What is the user sentiment for SHv4 Calculator? User sentiment appears to be very positive, as indicated by its rating of 5.0 stars from 3 ratings. This suggests users are highly satisfied with its functionality. ### Is SHv4 Calculator free to download and use? Yes, SHv4 Calculator is completely free. The app is listed as 'Free' and does not appear to have any in-app purchases or subscription requirements. ## Version history (last 5 releases) ### 1.2.1 — 2025-01-21 - Minor improvements ### 1.2.0 — 2025-01-16 - Minor improvements ### 1.1.6 — 2024-07-05 - added Japan and Turkey language. ### 1.1.5 — 2024-04-10 - added German and Russian language. ### 1.1.0 — 2024-04-04 - Changed the app icon and added French language. ## Apps similar to SHv4 Calculator | App | Rating | Price | Category | | --- | --- | --- | --- | | [Motool Service Assistant](https://appshunter.io/ios/app/motool-service-assistant/id1444719113) | 3.3 (24) | Free | Utilities | | [Monimoto](https://appshunter.io/ios/app/monimoto/id1236727834) | 3.7 (26) | Free | Utilities | | [Tech-Air App](https://appshunter.io/ios/app/tech-air-app/id1504440133) | 1.6 (83) | Free | Utilities | | [DITRIO - Smart Lamp](https://appshunter.io/ios/app/ditrio-smart-lamp/id1642273831) | 3.0 (11) | Free | Utilities | | [Cardo Connect](https://appshunter.io/ios/app/cardo-connect/id1333553210) | 4.1 (27,231) | Free | Utilities | | [PowerVision 4](https://appshunter.io/ios/app/powervision-4/id1559102553) | 4.9 (251) | Free | Utilities | ## More apps by HealTech Electronics Ltd. - [QuickShifter easy (iQSE)](https://appshunter.io/ios/app/quickshifter-easy-iqse/id1061478619) - [AR Assistant (ARA)](https://appshunter.io/ios/app/ar-assistant-ara/id1531468814) - [iLogger easy (iLE)](https://appshunter.io/ios/app/ilogger-easy-ile/id1550090875) - [iQS easy WiFi (iQSE-W)](https://appshunter.io/ios/app/iqs-easy-wifi-iqse-w/id1635698413) - [SpeedoHealer CAN (SH-CAN)](https://appshunter.io/ios/app/speedohealer-can-sh-can/id6737591975) All apps by HealTech Electronics Ltd.: https://appshunter.io/developer/979817070 ## Related topics [shv4 calculator](https://appshunter.io/ios/topics/shv4-calculator) --- *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 2026-06-11.*