# ISMo vs Drydock

The clearest difference is update cadence: Drydock at every 5 weeks against ISMo's every 3 months. ISMo's advantage is iOS requirement (8.1 vs 12). 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.

ISMo ships an update every 3 months, Drydock every 5 weeks. The most recent releases landed on October 5, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | ISMo | Drydock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[2.0 (1 ratings)](https://appshunter.io/ios/app/drydock/id6474896838/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 5 weeks** |
| Monetization | — | Free |
| Size | 6 MB | 39 MB |
| Requires iOS | **8.1** | 12 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Blu Fisch Ltd](https://appshunter.io/developer/920848763) | [Brute Squad Services](https://appshunter.io/developer/937707750) |

## What reviewers say

### ISMo

[App page](https://appshunter.io/ios/app/ismo/id920848764)

**Features:** macOS Compatibility

**In-app purchases:** none


### Drydock

[App page](https://appshunter.io/ios/app/drydock/id6474896838)

Manage your entire vessel drydock process, from initial specifications and budgeting to quoting costs and generating daily and final technical reports. This app streamlines drydock operations for efficient project oversight.

**Highlights:** Specification management, Budgeting, Cost quoting, Daily reports, Final technical reports

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ISMo free?

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

### Is Drydock free?

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

### Do ISMo or Drydock have ads?

Neither ISMo nor Drydock shows ads.

### Which is updated more often, ISMo or Drydock?

ISMo ships an update every 3 months, and Drydock every 5 weeks. Most recently, ISMo was updated on October 5, 2026 and Drydock on September 29, 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.*