# Gulf vs Brief Monster

The clearest difference is in-app purchases: Gulf at none against Brief Monster's 2. Gulf also leads on iOS requirement (12.0 vs 16.4). Brief Monster's advantage is update cadence (weekly vs every 8 months). On price, ads and device support there is nothing between them.

Both are free to download. Brief Monster sells 2 in-app purchases, starting at $11.99 per month. Gulf asks for nothing beyond the download.

Gulf ships an update every 8 months, Brief Monster weekly. The most recent releases landed on October 24, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Gulf | Brief Monster |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.8 (4 ratings)](https://appshunter.io/ios/app/gulf/id1152311519/reviews)** | — |
| Number of ratings | **4** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Weekly** |
| Monetization | Free | — |
| Size | 9 MB | 101 MB |
| Requires iOS | **12.0** | 16.4 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Wikon Kommunikationstechnik GmbH](https://appshunter.io/developer/472943917) | [multiangular UG](https://appshunter.io/developer/1447877355) |

## What reviewers say

### Gulf

[App page](https://appshunter.io/ios/app/gulf/id1152311519)

Monitor and control the fill level of your tanks remotely from anywhere in the world. Provides an optimized overview of your tank status. A demo login is available for new users.

**Highlights:** Remote tank fill level control, Global accessibility, Optimized tank overview, Demo login available, Tank status monitoring

**Features:** macOS Compatibility

**In-app purchases:** none


### Brief Monster

[App page](https://appshunter.io/ios/app/brief-monster/id6815175286)

**Features:** macOS Compatibility, Apple Wallet, Vision Pro support, iPhone Duo support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Brief Monster PRO | $11.99 | per month |
| Brief Monster PRO | $79.99 | per year |


## Frequently asked questions

### Is Gulf free?

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

### Is Brief Monster free?

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

### Do Gulf or Brief Monster have ads?

Neither Gulf nor Brief Monster shows ads.

### Which is updated more often, Gulf or Brief Monster?

Gulf ships an update every 8 months, and Brief Monster weekly. Most recently, Gulf was updated on October 24, 2026 and Brief Monster on October 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.*