# Instrumentation Directory vs Freefly Flow

The clearest difference is rating: Freefly Flow at 5.0 against Instrumentation Directory's 4.0. Freefly Flow also leads on update cadence (every 2 weeks vs every 9 months) and ratings volume (3 vs 1). Instrumentation Directory's advantage is in-app purchases (none vs 2). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Freefly Flow sells 2 in-app purchases, starting at $24.99 per month. Instrumentation Directory asks for nothing beyond the download.

Freefly Flow holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 1 and 3 respectively.

Instrumentation Directory ships an update every 9 months, Freefly Flow every 2 weeks. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Instrumentation Directory | Freefly Flow |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (1 ratings)](https://appshunter.io/ios/app/instrumentation-directory/id883583428/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/freefly-flow/id1522046404/reviews)** |
| Number of ratings | 1 | **3** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 2 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 29 MB | 845 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Datateam Business Media Ltd](https://appshunter.io/developer/531755760) | [Aerial Precision B.V.](https://appshunter.io/developer/1522046586) |

## 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


### Freefly Flow

[App page](https://appshunter.io/ios/app/freefly-flow/id1522046404)

Process lidar scans and .las files directly on your iPad. Visualize unlimited point cloud data with dynamic colorization, customized viewing options, and efficient data management tools. Export your processed work for seamless sharing.

**Highlights:** Process Flux lidar scans in the field, Import and visualize unlimited .las files, Dynamic colorization by height, RGB, or attribute, Customizable camera field of view and orthographic projection, Eye-Dome Lighting shader for enhanced clarity, Clipping box for dataset cropping, Export visible sections to new .las files

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Aerial Precision Pro | $24.99 | per month |
| Aerial Precision Pro | $224.99 | per year |


## Frequently asked questions

### Is Instrumentation Directory free?

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

### Is Freefly Flow free?

Freefly Flow is free to download, with in-app purchases available.

### Which has better reviews, Instrumentation Directory or Freefly Flow?

Freefly Flow is rated higher. Instrumentation Directory averages 4.0 out of 5 from 1 ratings, while Freefly Flow averages 5.0 from 3 ratings.

### Do Instrumentation Directory or Freefly Flow have ads?

Neither Instrumentation Directory nor Freefly Flow shows ads.

### Which is updated more often, Instrumentation Directory or Freefly Flow?

Instrumentation Directory ships an update every 9 months, and Freefly Flow every 2 weeks. Most recently, Instrumentation Directory was updated on October 29, 2026 and Freefly Flow 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.*