# FLEX LNG IRT vs FAST.Onboard

The clearest difference is iOS requirement: FLEX LNG IRT at 12.4 against FAST.Onboard's 15.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

FLEX LNG IRT ships an update every 11 months, FAST.Onboard every 21 months. The most recent releases landed on November 3, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | FLEX LNG IRT | FAST.Onboard |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 11 months** | Every 21 months |
| Size | 53 MB | 133 MB |
| Requires iOS | **12.4** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [MariApps Marine Solutions Pvt. Ltd.](https://appshunter.io/developer/1040404561) | [Chevron U.S.A. Inc.](https://appshunter.io/developer/371186060) |

## What reviewers say

### FLEX LNG IRT

[App page](https://appshunter.io/ios/app/flex-lng-irt/id1571519979)

**Features:** macOS Compatibility

**In-app purchases:** none


### FAST.Onboard

[App page](https://appshunter.io/ios/app/fastonboard/id6446953693)

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

**In-app purchases:** none


## Frequently asked questions

### Is FLEX LNG IRT free?

FLEX LNG IRT is free to download, with no in-app purchases.

### Is FAST.Onboard free?

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

### Do FLEX LNG IRT or FAST.Onboard have ads?

Neither FLEX LNG IRT nor FAST.Onboard shows ads.

### Which is updated more often, FLEX LNG IRT or FAST.Onboard?

FLEX LNG IRT ships an update every 11 months, and FAST.Onboard every 21 months. Most recently, FLEX LNG IRT was updated on November 3, 2026 and FAST.Onboard on October 9, 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.*