# Fast OEM Mobile Tech vs Design Air

The clearest difference is rating: Design Air at 5.0 against Fast OEM Mobile Tech's 3.2. Fast OEM Mobile Tech's advantage is update cadence (fortnightly vs every 2 months) and ratings volume (14 vs 3). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Design Air holds the better App Store score, 5.0 against 3.2. Both are backed by a comparable volume of ratings — 14 and 3 respectively.

Fast OEM Mobile Tech ships an update fortnightly, Design Air every 2 months. The most recent releases landed on October 8, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Fast OEM Mobile Tech | Design Air |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.2 (14 ratings)](https://appshunter.io/ios/app/fast-oem-mobile-tech/id941402002/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/design-air/id1627295650/reviews)** |
| Number of ratings | **14** | 3 |
| Positive reviews | 16.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 2 months |
| Monetization | Free | Free |
| Size | 175 MB | 28 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [International Comfort Products Corporation](https://appshunter.io/developer/941402001) | [Billtrust](https://appshunter.io/developer/1454713057) |

## What reviewers say

### Fast OEM Mobile Tech

[App page](https://appshunter.io/ios/app/fast-oem-mobile-tech/id941402002)

This app assists HVAC technicians in identifying necessary parts for repairs and locating nearby distributors. It streamlines job management by recording parts used and provides access to technical literature and training resources.

**Highlights:** Parts identification for repairs, Nearest distributor locator, Job management and record keeping, AI assistant for technical questions, System capacity calculator, Technical literature access

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

**In-app purchases:** none


### Design Air

[App page](https://appshunter.io/ios/app/design-air/id1627295650)

This business app provides customers with tools to streamline daily operations. Access product information, real-time inventory, instant pricing, and view order status. It also allows for invoice payments and document access.

**Highlights:** Real-time product inventory, Instant pricing information, Order status tracking, Invoice payment and viewing, Access to manufacturer documents, Barcode scanning for item lookup

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Fast OEM Mobile Tech free?

Fast OEM Mobile Tech is free to download, with no in-app purchases.

### Is Design Air free?

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

### Which has better reviews, Fast OEM Mobile Tech or Design Air?

Design Air is rated higher. Fast OEM Mobile Tech averages 3.2 out of 5 from 14 ratings, while Design Air averages 5.0 from 3 ratings.

### Do Fast OEM Mobile Tech or Design Air have ads?

Neither Fast OEM Mobile Tech nor Design Air shows ads.

### Which is updated more often, Fast OEM Mobile Tech or Design Air?

Fast OEM Mobile Tech ships an update fortnightly, and Design Air every 2 months. Most recently, Fast OEM Mobile Tech was updated on October 8, 2026 and Design Air on October 6, 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.*