# 学而时习之 vs Memory Ark

The clearest difference is rating: Memory Ark at 5.0 against 学而时习之's 1.0. On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. 学而时习之 sells 2 one-off in-app purchases and Memory Ark sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

Memory Ark holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 6, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | 学而时习之 | Memory Ark |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/id1593148033/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/memory-ark/id6470735175/reviews)** |
| Number of ratings | 1 | 1 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 7 MB | 6 MB |
| Requires iOS | 16.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [红晓 赵](https://appshunter.io/developer/1516558450) | [世超 徐](https://appshunter.io/developer/1688946625) |

## What reviewers say

### 学而时习之

[App page](https://appshunter.io/ios/app/id1593148033)

This app helps improve learning efficiency and memory through scientific brain usage techniques. It offers automatic review reminders for tasks and provides brain science knowledge to enhance understanding and recall.

**Highlights:** Automatic review reminders for learning tasks, Brain science knowledge tips, Customizable learning tasks, Daily task overview reminders, iCloud data synchronization, Reading notes on brain science

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 我是学生(永久会员) | $2.99 | one-time |
| 永久会员 | $3.99 | one-time |


### Memory Ark

[App page](https://appshunter.io/ios/app/memory-ark/id6470735175)

This app helps users combat forgetting by using the Ebbinghaus Forgetting Curve to create personalized review schedules. It offers features like task management, progress tracking, and smart rescheduling to make learning more efficient and effective.

**Highlights:** Ebbinghaus Forgetting Curve integration, Daily and calendar task management, Task categorization with tags, Detailed review session data, Customizable memory curves, Smart task rescheduling, Retroactive check-in for missed tasks

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Membership | $0.99 | per month |
| Annual Membership | $2.99 | per year |


## Frequently asked questions

### Is 学而时习之 free?

学而时习之 is free to download, with in-app purchases available.

### Is Memory Ark free?

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

### Which has better reviews, 学而时习之 or Memory Ark?

Memory Ark is rated higher. 学而时习之 averages 1.0 out of 5 from 1 ratings, while Memory Ark averages 5.0 from 1 ratings.

### Do 学而时习之 or Memory Ark have ads?

Neither 学而时习之 nor Memory Ark shows ads.

### Which is updated more often, 学而时习之 or Memory Ark?

学而时习之 ships an update every 2 months, and Memory Ark every 2 months. Most recently, 学而时习之 was updated on October 6, 2026 and Memory Ark on October 7, 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.*