# ISMo Forms vs Gas

The clearest difference is in-app purchases: ISMo Forms at none against Gas's 1. Gas's advantage is iOS requirement (13.4 vs 15.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Gas sells 1 one-off in-app purchase. ISMo Forms asks for nothing beyond the download.

ISMo Forms ships an update every 7 months, Gas every 6 months. The most recent releases landed on June 1, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | ISMo Forms | Gas |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/ismo-forms/id1475635634/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 6 months** |
| Monetization | Free | — |
| Size | 15 MB | 10 MB |
| Requires iOS | 15.0 | **13.4** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Blu Fisch Ltd](https://appshunter.io/developer/920848763) | [Iurii Dubrov](https://appshunter.io/developer/1632057221) |

## What reviewers say

### ISMo Forms

[App page](https://appshunter.io/ios/app/ismo-forms/id1475635634)

This app enables yacht crew to fill out forms digitally on their personal iOS devices, replacing traditional paper methods. It streamlines onboard procedures and improves efficiency for all crew members.

**Highlights:** Digital form completion, Replaces paper forms, Use on personal iOS devices, Streamlines onboard procedures, Improves crew efficiency

**In-app purchases:** none


### Gas

[App page](https://appshunter.io/ios/app/gas-main/id1522466692)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Get full App version | $7.99 | one-time |


## Frequently asked questions

### Is ISMo Forms free?

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

### Is Gas free?

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

### Do ISMo Forms or Gas have ads?

Neither ISMo Forms nor Gas shows ads.

### Which is updated more often, ISMo Forms or Gas?

ISMo Forms ships an update every 7 months, and Gas every 6 months. Most recently, ISMo Forms was updated on June 1, 2026 and Gas on September 10, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*