# iSmartDiag vs SUNPILOT

The clearest difference is update cadence: iSmartDiag at every 4 days against SUNPILOT's every 6 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

iSmartDiag ships an update every 4 days, SUNPILOT every 6 weeks. The most recent releases landed on November 3, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | iSmartDiag | SUNPILOT |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (2 ratings)](https://appshunter.io/ios/app/ismartdiag/id1669179670/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 25.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 6 weeks |
| Monetization | Free | — |
| Size | 615 MB | 148 MB |
| Requires iOS | **15.5** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 9+ | 4+ |
| Developer | [Shenzhen Vident Technology Co., Ltd](https://appshunter.io/developer/1661505875) | [Magen ECO-ENERGY INDUSTRIES A.C.S LTD](https://appshunter.io/developer/1651580173) |

## What reviewers say

### iSmartDiag

[App page](https://appshunter.io/ios/app/ismartdiag/id1669179670)

This app provides powerful automotive diagnostic functions for mechanics and DIYers. It connects via Bluetooth to scan and diagnose over 110 vehicle brands, offering detailed system analysis and maintenance functions. Save time and costs with real-time monitoring and comprehensive reports.

**Highlights:** 110+ vehicle brands coverage, Full system scan & diagnosis, Bi-directional control, Read/erase fault codes, Maintenance functions (e.g., service reset, EPB), Data stream graph display, Bluetooth connectivity

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

**In-app purchases:** none


### SUNPILOT

[App page](https://appshunter.io/ios/app/sunpilot/id6744658576)

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

**In-app purchases:** none


## Frequently asked questions

### Is iSmartDiag free?

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

### Is SUNPILOT free?

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

### Do iSmartDiag or SUNPILOT have ads?

Neither iSmartDiag nor SUNPILOT shows ads.

### Which is updated more often, iSmartDiag or SUNPILOT?

iSmartDiag ships an update every 4 days, and SUNPILOT every 6 weeks. Most recently, iSmartDiag was updated on November 3, 2026 and SUNPILOT on October 15, 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.*