# Memory Helper vs Memory Ark

The clearest difference is update cadence: Memory Helper at weekly against Memory Ark's every 2 months. Memory Helper also leads on ratings volume (65 vs 1). Memory Ark's advantage is iOS requirement (15.0 vs 17.0). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. Memory Helper sells 4 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.

On the App Store both sit at effectively the same score — 4.9 for Memory Helper against 5.0 for Memory Ark. That said, the two scores are not equally well evidenced: Memory Helper has 65 ratings behind it against 1, so its average is the more settled of the two.

Memory Helper ships an update weekly, Memory Ark every 2 months. The most recent releases landed on October 29, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Memory Helper | Memory Ark |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (65 ratings)](https://appshunter.io/ios/app/memory-helper-srs-review/id1113262919/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/memory-ark/id6470735175/reviews)** |
| Number of ratings | **65** | 1 |
| Positive reviews | 84.2% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 2 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 96 MB | 6 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [剑津 付](https://appshunter.io/developer/1113262918) | [世超 徐](https://appshunter.io/developer/1688946625) |

## What reviewers say

### Memory Helper

[App page](https://appshunter.io/ios/app/memory-helper-srs-review/id1113262919)

This app helps you remember information by scheduling reviews at scientifically optimal times based on the Ebbinghaus forgetting curve. It offers flexible organization and review options to maximize learning efficiency and minimize wasted effort.

**Highlights:** Spaced repetition scheduling, Customizable review curves, Organize with types and tags, Search and image support, Markdown syntax support, Calendar view for scheduling, Cloud synchronization

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month Subscription | $1.99 | one-time |
| 6 Months Subscription | $6.99 | one-time |
| 1 Year Subscription | $9.99 | one-time |
| 3 Years Subscription | $19.99 | one-time |

**What reviewers like**

- 👍 Very useful for studying
- 👍 Good for remembering words
- 👍 Simple and convenient
- 👍 Intelligent adjustment function
- 👍 Cost-effective subscription

**What reviewers complain about**

- 🐛 Login issues
- 🐛 Cannot register
- 🐛 Poor English pronunciation
- 🐛 Refund issues
- 🐛 App not fully translated

**Reported bugs**

- 🐛 Cannot log in with WeChat
- 🐛 Cannot register with email or WeChat
- 🐛 English pronunciation is poor
- 🐛 Cannot find refund option
- 🐛 App not fully translated to English

**Requested features**

- 💡 Open backend API for integrations
- 💡 Add images
- 💡 Add audio recording
- 💡 One-time payment model
- 💡 Sync with web/desktop version


### 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 Memory Helper free?

Memory Helper 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, Memory Helper or Memory Ark?

Memory Ark is rated higher. Memory Helper averages 4.9 out of 5 from 65 ratings, while Memory Ark averages 5.0 from 1 ratings.

### Do Memory Helper or Memory Ark have ads?

Neither Memory Helper nor Memory Ark shows ads.

### Which is updated more often, Memory Helper or Memory Ark?

Memory Helper ships an update weekly, and Memory Ark every 2 months. Most recently, Memory Helper was updated on October 29, 2026 and Memory Ark on October 7, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*