# SwiftStudy vs PDR Planet

The clearest difference is update cadence: SwiftStudy at fortnightly against PDR Planet's every 5 months. SwiftStudy also leads on iOS requirement (12.0 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. SwiftStudy sells 2 in-app purchases, starting at $3.99 per month and PDR Planet sells 1 in-app purchase, starting at $349.00 per year. Whichever you choose, the download price is not the number that matters.

SwiftStudy ships an update fortnightly, PDR Planet every 5 months. Both last shipped on September 18, 2026.

## The numbers

| Metric | SwiftStudy | PDR Planet |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 5 months |
| Size | 170 MB | 128 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [DNT Music Inc](https://appshunter.io/developer/1742701909) | [PDR Planet srls](https://appshunter.io/developer/1788842694) |

## What reviewers say

### SwiftStudy

[App page](https://appshunter.io/ios/app/swiftstudy-smarter-learning/id6499191067)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SwiftStudy Monthly Plan | $3.99 | per month |
| SwiftStudy Yearly Plan | $29.99 | per year |


### PDR Planet

[App page](https://appshunter.io/ios/app/pdr-planet/id6740194348)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Yearly Subscription | $349.00 | per year |


## Frequently asked questions

### Is SwiftStudy free?

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

### Is PDR Planet free?

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

### Do SwiftStudy or PDR Planet have ads?

Neither SwiftStudy nor PDR Planet shows ads.

### Which is updated more often, SwiftStudy or PDR Planet?

SwiftStudy ships an update fortnightly, and PDR Planet every 5 months. Most recently, SwiftStudy was updated on September 18, 2026 and PDR Planet on September 18, 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.*