# Denver ACK vs Controller Fly for DJI Drones

The clearest difference is in-app purchases: Denver ACK at none against Controller Fly for DJI Drones's 3. Denver ACK also leads on iOS requirement (7.1 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. Controller Fly for DJI Drones sells 3 in-app purchases, starting at $19.99 per month. Denver ACK asks for nothing beyond the download.

## The numbers

| Metric | Denver ACK | Controller Fly for DJI Drones |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 3 weeks |
| Size | 27 MB | 131 MB |
| Requires iOS | **7.1** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ealen Luo](https://appshunter.io/developer/1298964877) | [Linh Phan Nhat Khanh](https://appshunter.io/developer/1777727575) |

## What reviewers say

### Denver ACK

[App page](https://appshunter.io/ios/app/denver-ack-8061w/id1522045210)

**Features:** macOS Compatibility

**In-app purchases:** none


### Controller Fly for DJI Drones

[App page](https://appshunter.io/ios/app/controller-fly-for-dji-drones/id6752404884)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Features Unlock | $19.99 | per month |
| Pro Features Unlock | $39.99 | per year |
| Pro Features Unlock | $79.99 | one-time |


## Frequently asked questions

### Is Denver ACK free?

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

### Is Controller Fly for DJI Drones free?

Controller Fly for DJI Drones is free to download, with in-app purchases available.

### Do Denver ACK or Controller Fly for DJI Drones have ads?

Neither Denver ACK nor Controller Fly for DJI Drones shows ads.

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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.*