# Smart NPK vs Dragonfly

The clearest difference is update cadence: Smart NPK at every 5 days against Dragonfly's fortnightly. Smart NPK also leads on iOS requirement (9.0 vs 15.1). On price, ads, 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.

Smart NPK ships an update every 5 days, Dragonfly fortnightly. The most recent releases landed on October 13, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Smart NPK | Dragonfly |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 days** | Fortnightly |
| Size | 13 MB | 106 MB |
| Requires iOS | **9.0** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Chakrit Chotamonsak](https://appshunter.io/developer/1208089430) | [GISTDA](https://appshunter.io/developer/1046208414) |

## What reviewers say

### Smart NPK

[App page](https://appshunter.io/ios/app/smart-npk/id1384195203)

**Features:** macOS Compatibility

**In-app purchases:** none


### Dragonfly

[App page](https://appshunter.io/ios/app/dragonfly/id1668939031)

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

**In-app purchases:** none


## Frequently asked questions

### Is Smart NPK free?

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

### Is Dragonfly free?

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

### Do Smart NPK or Dragonfly have ads?

Neither Smart NPK nor Dragonfly shows ads.

### Which is updated more often, Smart NPK or Dragonfly?

Smart NPK ships an update every 5 days, and Dragonfly fortnightly. Most recently, Smart NPK was updated on October 13, 2026 and Dragonfly on October 10, 2026.

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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.*