# GasFlowMeter vs Subscription Manager

The clearest difference is in-app purchases: GasFlowMeter at none against Subscription Manager's 1. GasFlowMeter also leads on iOS requirement (9.3 vs 15.0). Subscription Manager's advantage is ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. Subscription Manager sells 1 one-off in-app purchase. GasFlowMeter asks for nothing beyond the download.

## The numbers

| Metric | GasFlowMeter | Subscription Manager |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | — | Daily |
| Size | 22 MB | 14 MB |
| Requires iOS | **9.3** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Rajam Raghu](https://appshunter.io/developer/893080670) | [Necati Berk Ozcelik](https://appshunter.io/developer/1853573090) |

## What reviewers say

### GasFlowMeter

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Subscription Manager

[App page](https://appshunter.io/ios/app/subscription-manager-paylio/id6759074108)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Premium Package | $4.99 | one-time |


## Frequently asked questions

### Is GasFlowMeter free?

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

### Is Subscription Manager free?

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

### Do GasFlowMeter or Subscription Manager have ads?

GasFlowMeter shows ads; Subscription Manager 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.*