# Palace Walk vs 21日で学ぶ歎異抄

The clearest difference is ads: 21日で学ぶ歎異抄 at none against Palace Walk's shown. 21日で学ぶ歎異抄 also leads on update cadence (every 4 days vs fortnightly). Palace Walk's advantage is device support (4 vs 2) and iOS requirement (15.6 vs 17.0). On price and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Palace Walk ships an update fortnightly, 21日で学ぶ歎異抄 every 4 days. The most recent releases landed on October 24, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Palace Walk | 21日で学ぶ歎異抄 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (17 ratings)](https://appshunter.io/ios/app/palace-walk/id1583677186/reviews)** | — |
| Number of ratings | **17** | — |
| Positive reviews | 81.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Fortnightly | **Every 4 days** |
| Monetization | Ad-supported | — |
| Size | 59 MB | 6 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Tomoya Furubori](https://appshunter.io/developer/1560096349) | [Yoshihide Matsumoto](https://appshunter.io/developer/6788531770) |

## What reviewers say

### Palace Walk

[App page](https://appshunter.io/ios/app/palace-walk/id1583677186)

Train your memory using the Memory Palace technique. This app provides an easy way to practice the Method of Loci, useful for studying, memorizing lists, and improving recall.

**Highlights:** Memory Palace training, Method of Loci practice, Journey Method exercises, Useful for studying, Helps memorize lists

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases:** none


### 21日で学ぶ歎異抄

[App page](https://appshunter.io/ios/app/21/id6788531768)

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

**In-app purchases:** none


## Frequently asked questions

### Is Palace Walk free?

Palace Walk is free to download, with no in-app purchases.

### Is 21日で学ぶ歎異抄 free?

21日で学ぶ歎異抄 is free to download, with no in-app purchases.

### Do Palace Walk or 21日で学ぶ歎異抄 have ads?

Palace Walk shows ads; 21日で学ぶ歎異抄 does not.

### Which is updated more often, Palace Walk or 21日で学ぶ歎異抄?

Palace Walk ships an update fortnightly, and 21日で学ぶ歎異抄 every 4 days. Most recently, Palace Walk was updated on October 24, 2026 and 21日で学ぶ歎異抄 on October 31, 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.*