# Joyful Space Booking vs Memory Ark

The clearest difference is in-app purchases: Joyful Space Booking at none against Memory Ark's 2. Joyful Space Booking also leads on update cadence (monthly vs every 2 months) and iOS requirement (11.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. Memory Ark sells 2 in-app purchases, starting at $0.99 per month. Joyful Space Booking asks for nothing beyond the download.

Joyful Space Booking ships an update monthly, Memory Ark every 2 months. Both last shipped on September 19, 2026.

## The numbers

| Metric | Joyful Space Booking | Memory Ark |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/memory-ark/id6470735175/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | — | Free with in-app purchases |
| Size | 49 MB | 6 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [VARX](https://appshunter.io/developer/1712599336) | [世超 徐](https://appshunter.io/developer/1688946625) |

## What reviewers say

### Joyful Space Booking

[App page](https://appshunter.io/ios/app/joyful-space-booking/id1562066103)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 Joyful Space Booking free?

Joyful Space Booking is free to download, with no in-app purchases.

### Is Memory Ark free?

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

### Do Joyful Space Booking or Memory Ark have ads?

Neither Joyful Space Booking nor Memory Ark shows ads.

### Which is updated more often, Joyful Space Booking or Memory Ark?

Joyful Space Booking ships an update monthly, and Memory Ark every 2 months. Most recently, Joyful Space Booking was updated on September 19, 2026 and Memory Ark on September 19, 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.*