# Instrumentation Directory vs Polyhose

The clearest difference is rating: Polyhose at 5.0 against Instrumentation Directory's 4.0. Polyhose also leads on update cadence (every 3 weeks vs every 9 months). On price, review sentiment, ratings volume 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.

Polyhose holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Instrumentation Directory ships an update every 9 months, Polyhose every 3 weeks. The most recent releases landed on October 17, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Instrumentation Directory | Polyhose |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (1 ratings)](https://appshunter.io/ios/app/instrumentation-directory/id883583428/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/polyhose/id6499584184/reviews)** |
| Number of ratings | 1 | 1 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 29 MB | 17 MB |
| Requires iOS | **16.0** | 17.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Datateam Business Media Ltd](https://appshunter.io/developer/531755760) | [Polyhose India Pvt Ltd](https://appshunter.io/developer/1743949708) |

## What reviewers say

### Instrumentation Directory

[App page](https://appshunter.io/ios/app/instrumentation-directory/id883583428)

This specialized annual directory connects instrumentation professionals with purchasers and specifiers of control, sensors, and test equipment. It serves as a comprehensive reference guide for the industry, evolving with market trends since its 2002 launch.

**Highlights:** Specialized annual directory, Connects purchasers and specifiers, Covers control, instrumentation, sensors, Includes test & measurement equipment, Industry reference guide

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

**In-app purchases:** none


### Polyhose

[App page](https://appshunter.io/ios/app/polyhose/id6499584184)

Access detailed product specifications for seamless project integration. Ensure accurate crimping of hoses with matched fittings.

**Highlights:** Detailed product specifications, Seamless project integration, Accurate hose crimping, Matched fittings information

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

**In-app purchases:** none


## Frequently asked questions

### Is Instrumentation Directory free?

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

### Is Polyhose free?

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

### Which has better reviews, Instrumentation Directory or Polyhose?

Polyhose is rated higher. Instrumentation Directory averages 4.0 out of 5 from 1 ratings, while Polyhose averages 5.0 from 1 ratings.

### Do Instrumentation Directory or Polyhose have ads?

Neither Instrumentation Directory nor Polyhose shows ads.

### Which is updated more often, Instrumentation Directory or Polyhose?

Instrumentation Directory ships an update every 9 months, and Polyhose every 3 weeks. Most recently, Instrumentation Directory was updated on October 17, 2026 and Polyhose on October 19, 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.*