# ESi GO vs DRFT MRKS

The clearest difference is update cadence: DRFT MRKS at every 4 weeks against ESi GO's every 3 months. On price, ads, in-app purchases and device support there is nothing between them.

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

ESi GO ships an update every 3 months, DRFT MRKS every 4 weeks. The most recent releases landed on September 13, 2026 and August 20, 2026 respectively.

## The numbers

| Metric | ESi GO | DRFT MRKS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/drft-mrks/id6741070099/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 4 weeks** |
| Monetization | — | Free |
| Size | 27 MB | 49 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [ESI Controls Ltd](https://appshunter.io/developer/1151779580) | [Tymor Marine Ltd](https://appshunter.io/developer/1769206109) |

## What reviewers say

### ESi GO

[App page](https://appshunter.io/ios/app/esi-go/id6450834617)

**Features:** macOS Compatibility

**In-app purchases:** none


### DRFT MRKS

[App page](https://appshunter.io/ios/app/drft-mrks/id6741070099)

This application uses AI and deep learning to accurately measure a vessel's draft from a short HD video. It aims to provide a verifiable source of truth for calculating vessel displacement, improving accuracy in determining loaded cargo and equipment.

**Highlights:** AI/Deep Learning technology, Measures vessel draft from video, Improves draft reading accuracy, Verifiable source of truth, Calculates vessel displacement

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ESi GO free?

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

### Is DRFT MRKS free?

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

### Do ESi GO or DRFT MRKS have ads?

Neither ESi GO nor DRFT MRKS shows ads.

### Which is updated more often, ESi GO or DRFT MRKS?

ESi GO ships an update every 3 months, and DRFT MRKS every 4 weeks. Most recently, ESi GO was updated on September 13, 2026 and DRFT MRKS on August 20, 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.*