SHv4 Calculator vs Klar App
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SHv4 Calculator
Calculate your vehicle's speedometer error and get setup instructions for a SpeedoHealer module. This free, ad-free tool helps correct inaccurate speed and odometer readings on most motorcycles and some cars. It offers troubleshooting information and is compatible with non-cable driven speedometers.
- Calculate speedometer error
- Generate SpeedoHealer v4 setup instructions
- Access troubleshooting information
- Ad-free experience
- Offline functionality
- Compatible with most motorcycles and cars
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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.
Klar App
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Klar is a family task app built around one idea: everyone knows what they need to do. A parent creates the family, assigns tasks to each member, and sets a deadline. Klar handles the rest — sending reminders that get more frequent as the deadline approaches. When a task is done, the parent is notified. No nagging required. BUILT FOR FAMILIES — Assign tasks to any family member with a deadline — Recurring tasks — daily, weekly, biweekly, or monthly — Three roles: Owner, Parent, and Child, each with the right level of control — Everyone gets their own view — children see their tasks, parents see the full picture REMINDERS THAT ESCALATE Klar reminds the right person at 7 days, 3 days, 24 hours, 6 hours, 1 hour, 30 minutes, and 15 minutes before a deadline. Miss the deadline and both the assignee and parents are notified immediately. EARN MONEY FOR CHORES Add a compensation amount to any pool task. Kids claim what they want to do and earn real money. Parents pay with Swish directly from the app. NO ACCOUNTS REQUIRED No email addresses, no passwords. The family owner creates member profiles and each person gets a unique join code. Enter the code once and you're in. HOME SCREEN WIDGET See your open tasks without opening the app. Parents see their children's tasks at a glance. Children see their own. From Studio Cato — studiocato.io
Screenshots
Verdict
The clearest difference is in-app purchases: SHv4 Calculator at none against Klar App's 1. SHv4 Calculator also leads on device support (3 vs 1) and iOS requirement (12.0 vs 17.0). Klar App's advantage is update cadence (every 2 weeks vs every 3 months). On price and ads 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. Klar App sells 1 one-off in-app purchase. SHv4 Calculator asks for nothing beyond the download.
SHv4 Calculator ships an update every 3 months, Klar App every 2 weeks. The most recent releases landed on November 1, 2026 and October 6, 2026 respectively.
| Parameter | SHv4 Calculator | Klar App |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (4 ratings) — better | — |
| Positive reviews | 66.7% of reviews | — |
| Number of ratings | 4 — better | — |
| Update frequency | Every 3 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 12.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 1 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | HealTech Electronics Ltd. | Michel Cato |
In-app purchases
SHv4 Calculator
No in-app purchases
Klar App
- Unlock Klar$2.99
Questions
Is SHv4 Calculator free?
Is Klar App free?
Do SHv4 Calculator or Klar App have ads?
Which is updated more often, SHv4 Calculator or Klar App?
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