# Memory Capsule vs Keepstone

The clearest difference is in-app purchases: Memory Capsule at none against Keepstone's 1. Memory Capsule also leads on update cadence (every 2 days vs every 6 days). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Keepstone sells 1 one-off in-app purchase. Memory Capsule asks for nothing beyond the download.

Memory Capsule ships an update every 2 days, Keepstone every 6 days. The most recent releases landed on September 8, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Memory Capsule | Keepstone |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 6 days |
| Size | 87 MB | 18 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Wisish Tech](https://appshunter.io/developer/1765665154) | [Pablo Silva](https://appshunter.io/developer/1876877015) |

## What reviewers say

### Memory Capsule

[App page](https://appshunter.io/ios/app/memory-capsule-timelock/id6747623919)

**Features:** macOS Compatibility

**In-app purchases:** none


### Keepstone

[App page](https://appshunter.io/ios/app/keepstone-time-capsule-diary/id6759112157)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Keepstone Supporter | $0.99 | one-time |


## Frequently asked questions

### Is Memory Capsule free?

Memory Capsule is free to download, with no in-app purchases.

### Is Keepstone free?

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

### Do Memory Capsule or Keepstone have ads?

Neither Memory Capsule nor Keepstone shows ads.

### Which is updated more often, Memory Capsule or Keepstone?

Memory Capsule ships an update every 2 days, and Keepstone every 6 days. Most recently, Memory Capsule was updated on September 8, 2026 and Keepstone on September 22, 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.*