# 忘れ物リマインダー vs KnowTree

The clearest difference is ads: 忘れ物リマインダー at none against KnowTree's shown. KnowTree's advantage is iOS requirement (15.1 vs 18.4). On price, in-app purchases and device support there is nothing between them.

Both are free to download. 忘れ物リマインダー sells 1 in-app purchase, starting at $0.99 per month and KnowTree sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | 忘れ物リマインダー | KnowTree |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (1 ratings)](https://appshunter.io/ios/app/knowtree/id6757321205/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | — | Every 9 days |
| Size | 5 MB | 51 MB |
| Requires iOS | 18.4 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Appricot Co.,Ltd.](https://appshunter.io/developer/1716553156) | [Ukon Ryohei](https://appshunter.io/developer/1834526187) |

## What reviewers say

### 忘れ物リマインダー

[App page](https://appshunter.io/ios/app/id6747186892)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| プレミアムプラン | $0.99 | per month |


### KnowTree

[App page](https://appshunter.io/ios/app/knowtree/id6757321205)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| KnowTree Premium | $4.99 | one-time |


## Frequently asked questions

### Is 忘れ物リマインダー free?

忘れ物リマインダー is free to download, with in-app purchases available.

### Is KnowTree free?

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

### Do 忘れ物リマインダー or KnowTree have ads?

KnowTree shows ads; 忘れ物リマインダー 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.*