# シャドディク vs StudyForce Alarm

The clearest difference is iOS requirement: シャドディク at 13.0 against StudyForce Alarm's 16.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. シャドディク sells 1 in-app purchase, starting at $9.99 per month and StudyForce Alarm sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | シャドディク | StudyForce Alarm |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Daily | — |
| Size | 108 MB | 63 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [StudyPeaks](https://appshunter.io/developer/901134689) | [YUKI SHIIYAMA](https://appshunter.io/developer/1867294802) |

## What reviewers say

### シャドディク

[App page](https://appshunter.io/ios/app/toeic/id6749894258)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| プレミアムプラン | $9.99 | per month |


### StudyForce Alarm

[App page](https://appshunter.io/ios/app/studyforce-alarm/id6759204493)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| プレミアム（月額） | $1.99 | per month |
| プレミアム（年額） | $14.99 | per year |
| プレミアム（買い切り） | $59.99 | one-time |


## Frequently asked questions

### Is シャドディク free?

シャドディク is free to download, with in-app purchases available.

### Is StudyForce Alarm free?

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

### Do シャドディク or StudyForce Alarm have ads?

Neither シャドディク nor StudyForce Alarm 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.*