SHv4 Calculator vs aRacerSmart
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.
aRacerSmart
Monitor real-time engine data, analyze performance metrics like horsepower and torque, and adjust engine parameters. This app allows for diagnostic code reading and offers tuning map sharing capabilities.
- Real-time engine data monitoring
- Power meter (HP/Torque/Acceleration)
- Log data analysis
- Malf-code read
- Engine parameter adjustment
- Tuning map sharing
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aRacer Smart app support RC/RS Super and RCMini5 ecu. Provide Monitor Pro/Monitor Lite two type to monitor real time engine data. The main function are as below: 1. Engine data monitor and record 2. Power meter function (hp/torque/acceleration) 3. Log data analysis 4. Malf-code read 5. Engine parameters adjust: Fuel Base, Fuel Adj., Fuel Acc.,Spark Angle, Idle RPM, RPM Limit, VVA Control, Dec Fuel Cut, Auto Tune, WB O2 CL, Quick Shift, Speed Gain, Coolant Fan, TPS Learn 6. Quick Burn model base 7. Tuning map sharing 8. aRacer news
Screenshots
Verdict
The clearest difference is price: SHv4 Calculator at Free against aRacerSmart's $14.99. SHv4 Calculator also leads on rating (5.0 vs 2.8) and review sentiment (67% vs 31%). aRacerSmart's advantage is update cadence (every 2 weeks vs every 3 months) and chart position (#194 vs unranked). On ads, in-app purchases, monetization model and device support 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
SHv4 Calculator is free to download; aRacerSmart costs $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.
SHv4 Calculator holds the better App Store score, 5.0 against 2.8. That said, the two scores are not equally well evidenced: aRacerSmart has 34 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 67% of SHv4 Calculator's written reviews are positive against 31% of aRacerSmart's.
SHv4 Calculator ships an update every 3 months, aRacerSmart every 2 weeks. The most recent releases landed on October 24, 2026 and October 29, 2026 respectively.
| Parameter | SHv4 Calculator | aRacerSmart |
|---|---|---|
| Price | Free — better | $14.99 |
| Rating | 5.0 (4 ratings) — better | 2.8 (34 ratings) |
| Positive reviews | 66.7% of reviews — better | 31.0% of reviews |
| Number of ratings | 4 | 34 — better |
| Update frequency | Every 3 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Best chart rank | — | #194 — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 | 10.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 198 MB |
| Age rating | 4+ | 4+ |
| Developer | HealTech Electronics Ltd. | ARACER SPEEDTEK INC. |
Customer experience
SHv4 Calculator
aRacerSmart
In-app purchases
SHv4 Calculator
No in-app purchases
aRacerSmart
No in-app purchases
Questions
Is SHv4 Calculator free?
Is aRacerSmart free?
Which has better reviews, SHv4 Calculator or aRacerSmart?
Do SHv4 Calculator or aRacerSmart have ads?
Which is updated more often, SHv4 Calculator or aRacerSmart?
Other comparisons
