# Study Streak Calendar vs Stackd

The clearest difference is price: Stackd at Free against Study Streak Calendar's $1.99. Study Streak Calendar's advantage is in-app purchases (none vs 1). On ads, device support and iOS requirement there is nothing between them.

Stackd is free to download; Study Streak Calendar costs $1.99 up front. Stackd sells 1 one-off in-app purchase. Study Streak Calendar asks for nothing beyond the download.

## The numbers

| Metric | Study Streak Calendar | Stackd |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Fortnightly |
| Size | 1 MB | 3 MB |
| Requires iOS | **17.0** | 18 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Manabi Mate LLC](https://appshunter.io/developer/1817627045) | [Nene Nakagawa](https://appshunter.io/developer/1821103094) |

## What reviewers say

### Study Streak Calendar

[App page](https://appshunter.io/ios/app/study-streak-calendar/id6760706829)

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

**In-app purchases:** none


### Stackd

[App page](https://appshunter.io/ios/app/stackd-study-timer-and-tracker/id6761293821)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Stackd Pro | $1.99 | one-time |


## Frequently asked questions

### Is Study Streak Calendar free?

Study Streak Calendar costs $1.99, with no in-app purchases.

### Is Stackd free?

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

### Do Study Streak Calendar or Stackd have ads?

Neither Study Streak Calendar nor Stackd 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.*