# SmartPro Instrument vs Sherlock Holmes Detect

The clearest difference is rating: Sherlock Holmes Detect at 3.7 against SmartPro Instrument's 1.8. On price, ratings volume, update cadence and ads there is nothing between them.

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

Sherlock Holmes Detect holds the better App Store score, 3.7 against 1.8. Both are backed by a comparable volume of ratings — 8 and 7 respectively.

SmartPro Instrument ships an update every 2 months, Sherlock Holmes Detect monthly. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | SmartPro Instrument | Sherlock Holmes Detect |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.8 (8 ratings)](https://appshunter.io/ios/app/smartpro-instrument/id1341580615/reviews) | **[3.7 (7 ratings)](https://appshunter.io/ios/app/sherlock-holmes-detect/id1617998548/reviews)** |
| Number of ratings | **8** | 7 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | Free | Free |
| Size | 44 MB | 29 MB |
| Requires iOS | 15.6 | **14.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [SmartPro Instrument Co., Ltd.](https://appshunter.io/developer/1341580614) | [Mejix](https://appshunter.io/developer/1524792113) |

## What reviewers say

### SmartPro Instrument

[App page](https://appshunter.io/ios/app/smartpro-instrument/id1341580615)

This app displays measurement test results synchronized with specialized devices. It allows users to generate, share, and print certifications for diamonds and other gemstones after completing required tests.

**Highlights:** Synchronized measurement test results, Generate gemstone certifications, Share and print certifications, Supports Diamonds, Moissanites, CVD/HPHT, Works with multiple SmartPro devices

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

**In-app purchases:** none


### Sherlock Holmes Detect

[App page](https://appshunter.io/ios/app/sherlock-holmes-detect/id1617998548)

This application connects to a specialized SH box to analyze diamond images. It uses various illuminations to capture photos and distinguish between natural and lab-grown diamonds.

**Highlights:** Connects to SH box, Bluetooth/cable connectivity, Diamond image analysis, Distinguishes natural vs. lab-grown diamonds, Multiple illumination settings

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is SmartPro Instrument free?

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

### Is Sherlock Holmes Detect free?

Sherlock Holmes Detect is free to download, with no in-app purchases.

### Which has better reviews, SmartPro Instrument or Sherlock Holmes Detect?

Sherlock Holmes Detect is rated higher. SmartPro Instrument averages 1.8 out of 5 from 8 ratings, while Sherlock Holmes Detect averages 3.7 from 7 ratings.

### Do SmartPro Instrument or Sherlock Holmes Detect have ads?

Neither SmartPro Instrument nor Sherlock Holmes Detect shows ads.

### Which is updated more often, SmartPro Instrument or Sherlock Holmes Detect?

SmartPro Instrument ships an update every 2 months, and Sherlock Holmes Detect monthly. Most recently, SmartPro Instrument was updated on October 29, 2026 and Sherlock Holmes Detect on October 24, 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.*