# NAIC Codes vs Klein Borescope ET21

The clearest difference is update cadence: Klein Borescope ET21 at every 2 months against NAIC Codes's every 16 months. 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.

NAIC Codes ships an update every 16 months, Klein Borescope ET21 every 2 months. The most recent releases landed on September 17, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | NAIC Codes | Klein Borescope ET21 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/naic-codes/id433077127/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 16 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 18 MB | 19 MB |
| Requires iOS | **11.1** | 12.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [visual soft, inc](https://appshunter.io/developer/336927487) | [Klein Tools](https://appshunter.io/developer/440692921) |

## What reviewers say

### NAIC Codes

[App page](https://appshunter.io/ios/app/naic-codes/id433077127)

Access and search North American Industry Classification (NAIC) codes quickly. Browse by category or enter numeric codes and titles to find specific industry information. Save your favorite codes and share them via email.

**Highlights:** Search by numeric codes, Search by title, Browse by category, Drill down for specific codes, Bookmark favorites, Email listings

**In-app purchases:** none


### Klein Borescope ET21

[App page](https://appshunter.io/ios/app/klein-borescope-et21/id6740300461)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is NAIC Codes free?

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

### Is Klein Borescope ET21 free?

Klein Borescope ET21 is free to download, with no in-app purchases.

### Do NAIC Codes or Klein Borescope ET21 have ads?

Neither NAIC Codes nor Klein Borescope ET21 shows ads.

### Which is updated more often, NAIC Codes or Klein Borescope ET21?

NAIC Codes ships an update every 16 months, and Klein Borescope ET21 every 2 months. Most recently, NAIC Codes was updated on September 17, 2026 and Klein Borescope ET21 on September 27, 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.*