# Instrumentation Directory vs HS BID SECURE COMMS

Instrumentation Directory and HS BID SECURE COMMS are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Instrumentation Directory ships an update every 9 months, HS BID SECURE COMMS every 11 months. The most recent releases landed on October 17, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Instrumentation Directory | HS BID SECURE COMMS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/instrumentation-directory/id883583428/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 9 months** | Every 11 months |
| Monetization | Free | — |
| Size | 29 MB | 34 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Datateam Business Media Ltd](https://appshunter.io/developer/531755760) | [Primera Corporation Ltd](https://appshunter.io/developer/1597755637) |

## 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


### HS BID SECURE COMMS

[App page](https://appshunter.io/ios/app/hs-bid-secure-comms/id6472274692)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Instrumentation Directory free?

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

### Is HS BID SECURE COMMS free?

HS BID SECURE COMMS is free to download, with no in-app purchases.

### Do Instrumentation Directory or HS BID SECURE COMMS have ads?

Neither Instrumentation Directory nor HS BID SECURE COMMS shows ads.

### Which is updated more often, Instrumentation Directory or HS BID SECURE COMMS?

Instrumentation Directory ships an update every 9 months, and HS BID SECURE COMMS every 11 months. Most recently, Instrumentation Directory was updated on October 17, 2026 and HS BID SECURE COMMS on September 17, 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.*