# GROW Observatory vs SwipeDrill

The clearest difference is in-app purchases: GROW Observatory at none against SwipeDrill's 1. GROW Observatory also leads on ads (none vs shown) and iOS requirement (9.3 vs 13.0). On price and device support there is nothing between them.

Both are free to download. SwipeDrill sells 1 one-off in-app purchase. GROW Observatory asks for nothing beyond the download.

## The numbers

| Metric | GROW Observatory | SwipeDrill |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | — |
| Size | 84 MB | 31 MB |
| Requires iOS | **9.3** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [IIASA](https://appshunter.io/developer/1101285210) | [kenji kuroki](https://appshunter.io/developer/1834943683) |

## What reviewers say

### GROW Observatory

[App page](https://appshunter.io/ios/app/grow-observatory/id1409694401)

**In-app purchases:** none


### SwipeDrill

[App page](https://appshunter.io/ios/app/swipedrill-terraform/id6777545367)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Premium | $3.99 | one-time |


## Frequently asked questions

### Is GROW Observatory free?

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

### Is SwipeDrill free?

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

### Do GROW Observatory or SwipeDrill have ads?

SwipeDrill shows ads; GROW Observatory 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.*