# Stackd vs Study Time Memo

The clearest difference is ads: Stackd at none against Study Time Memo's shown. On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Stackd sells 1 one-off in-app purchase and Study Time Memo sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Stackd | Study Time Memo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Fortnightly | — |
| Size | 3 MB | 5 MB |
| Requires iOS | 18 | **17.0** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Nene Nakagawa](https://appshunter.io/developer/1821103094) | [丽佳 施](https://appshunter.io/developer/1894580777) |

## What reviewers say

### 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 |


### Study Time Memo

[App page](https://appshunter.io/ios/app/study-time-memo-subject-log/id6794255516)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |


## Frequently asked questions

### Is Stackd free?

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

### Is Study Time Memo free?

Study Time Memo is free to download, with in-app purchases available.

### Do Stackd or Study Time Memo have ads?

Study Time Memo shows ads; Stackd does not.

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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.*