# GasFlowMeter vs Bad Day Guide

The clearest difference is ads: Bad Day Guide at none against GasFlowMeter's shown. GasFlowMeter's advantage is iOS requirement (9.3 vs 15.0). 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.

## The numbers

| Metric | GasFlowMeter | Bad Day Guide |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | — | Every 9 months |
| Size | 22 MB | 84 MB |
| Requires iOS | **9.3** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Rajam Raghu](https://appshunter.io/developer/893080670) | [Drew Toma](https://appshunter.io/developer/6820180626) |

## What reviewers say

### GasFlowMeter

[App page](https://appshunter.io/ios/app/gasflowmeter-flow-calibration/id1489078800)

**Features:** macOS Compatibility

**In-app purchases:** none


### Bad Day Guide

[App page](https://appshunter.io/ios/app/bad-day-guide/id6758022304)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is GasFlowMeter free?

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

### Is Bad Day Guide free?

Bad Day Guide is free to download, with no in-app purchases.

### Do GasFlowMeter or Bad Day Guide have ads?

GasFlowMeter shows ads; Bad Day Guide does not.

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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.*