# SmartPro Instrument vs Rapping Level

The clearest difference is ads: SmartPro Instrument at none against Rapping Level's shown. Rapping Level's advantage is update cadence (every 2 weeks vs every 2 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

SmartPro Instrument ships an update every 2 months, Rapping Level every 2 weeks. The most recent releases landed on October 24, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | SmartPro Instrument | Rapping Level |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.8 (8 ratings)](https://appshunter.io/ios/app/smartpro-instrument/id1341580615/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 44 MB | 43 MB |
| Requires iOS | **15.6** | 15.8.3 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [SmartPro Instrument Co., Ltd.](https://appshunter.io/developer/1341580614) | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) |

## 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


### Rapping Level

[App page](https://appshunter.io/ios/app/rapping-level/id6749273417)

**Features:** macOS Compatibility, 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 Rapping Level free?

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

### Do SmartPro Instrument or Rapping Level have ads?

Rapping Level shows ads; SmartPro Instrument does not.

### Which is updated more often, SmartPro Instrument or Rapping Level?

SmartPro Instrument ships an update every 2 months, and Rapping Level every 2 weeks. Most recently, SmartPro Instrument was updated on October 24, 2026 and Rapping Level on October 13, 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.*