# GateKeeper by Gate Science vs M.A.R.I.A

The clearest difference is device support: GateKeeper by Gate Science at 2 against M.A.R.I.A's —. GateKeeper by Gate Science also leads on iOS requirement (11.0 vs 13.0). On price and in-app purchases 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 | GateKeeper by Gate Science | M.A.R.I.A |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | — |
| Update frequency | — | Every 12 months |
| Size | 36 MB | 98 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | **iPhone, iPod** | — |
| Age rating | 17+ | 17+ |
| Developer | [Gate Science, Inc.](https://appshunter.io/developer/1711137434) | [NeoDeck Holdings](https://appshunter.io/developer/901992187) |

## What reviewers say

### GateKeeper by Gate Science

[App page](https://appshunter.io/ios/app/gatekeeper-by-gate-science/id6468975740)

**In-app purchases:** none


### M.A.R.I.A

[App page](https://appshunter.io/ios/app/maria/id6599861793)

**In-app purchases:** none


## Frequently asked questions

### Is GateKeeper by Gate Science free?

GateKeeper by Gate Science is free to download, with no in-app purchases.

### Is M.A.R.I.A free?

M.A.R.I.A is free to download, with no in-app purchases.

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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.*