# SelfBrief vs Fuel Conversion Calculator

The clearest difference is ads: SelfBrief at none against Fuel Conversion Calculator's shown. SelfBrief also leads on iOS requirement (13.0 vs 15.6). Fuel Conversion Calculator's advantage is update cadence (every 2 days vs every 5 weeks). On price, 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.

SelfBrief ships an update every 5 weeks, Fuel Conversion Calculator every 2 days. The most recent releases landed on October 5, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | SelfBrief | Fuel Conversion Calculator |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 5 weeks | **Every 2 days** |
| Size | 38 MB | 50 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SelfBrief Limited](https://appshunter.io/developer/1708730424) | [Sasidharan Ponnusamy](https://appshunter.io/developer/1716516822) |

## What reviewers say

### SelfBrief

[App page](https://appshunter.io/ios/app/selfbrief/id6467506430)

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

**In-app purchases:** none


### Fuel Conversion Calculator

[App page](https://appshunter.io/ios/app/fuel-conversion-calculator/id6751782517)

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

**In-app purchases:** none


## Frequently asked questions

### Is SelfBrief free?

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

### Is Fuel Conversion Calculator free?

Fuel Conversion Calculator is free to download, with no in-app purchases.

### Do SelfBrief or Fuel Conversion Calculator have ads?

Fuel Conversion Calculator shows ads; SelfBrief does not.

### Which is updated more often, SelfBrief or Fuel Conversion Calculator?

SelfBrief ships an update every 5 weeks, and Fuel Conversion Calculator every 2 days. Most recently, SelfBrief was updated on October 5, 2026 and Fuel Conversion Calculator 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.*