# SHv4 Calculator vs aRacerSmart

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.

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.

## The numbers

| Metric | SHv4 Calculator | aRacerSmart |
| --- | --- | --- |
| Price | **Free** | $14.99 |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/shv4-calculator/id979817071/reviews)** | [2.8 (34 ratings)](https://appshunter.io/ios/app/aracersmart/id1296085645/reviews) |
| Number of ratings | 4 | **34** |
| Positive reviews | **66.7% of reviews** | 31.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 weeks** |
| Monetization | Free | Free |
| Best chart rank | — | **#194** |
| Size | 1 MB | 198 MB |
| Requires iOS | 12.0 | **10.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [HealTech Electronics Ltd.](https://appshunter.io/developer/979817070) | [ARACER SPEEDTEK INC.](https://appshunter.io/developer/1218691866) |

## What reviewers say

### SHv4 Calculator

[App page](https://appshunter.io/ios/app/shv4-calculator/id979817071)

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.

**Highlights:** Calculate speedometer error, Generate SpeedoHealer v4 setup instructions, Access troubleshooting information, Ad-free experience, Offline functionality, Compatible with most motorcycles and cars

**In-app purchases:** none


### aRacerSmart

[App page](https://appshunter.io/ios/app/aracersmart/id1296085645)

**Currently charting:** #194 Top Paid · Utilities (US App Store)

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.

**Highlights:** Real-time engine data monitoring, Power meter (HP/Torque/Acceleration), Log data analysis, Malf-code read, Engine parameter adjustment, Tuning map sharing

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is SHv4 Calculator free?

SHv4 Calculator is free to download, with no in-app purchases.

### Is aRacerSmart free?

aRacerSmart costs $14.99, with no in-app purchases.

### Which has better reviews, SHv4 Calculator or aRacerSmart?

SHv4 Calculator is rated higher. SHv4 Calculator averages 5.0 out of 5 from 4 ratings, while aRacerSmart averages 2.8 from 34 ratings.

### Do SHv4 Calculator or aRacerSmart have ads?

Neither SHv4 Calculator nor aRacerSmart shows ads.

### Which is updated more often, SHv4 Calculator or aRacerSmart?

SHv4 Calculator ships an update every 3 months, and aRacerSmart every 2 weeks. Most recently, SHv4 Calculator was updated on October 24, 2026 and aRacerSmart on October 29, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*