# Idea Store vs Mementia

The clearest difference is in-app purchases: Idea Store at none against Mementia's 3. Mementia's advantage is update cadence (every 2 days vs every 2 months) and iOS requirement (13.0 vs 15.6). On price, ads and device support there is nothing between them.

Both are free to download. Mementia sells 3 in-app purchases, starting at $1.49 per month. Idea Store asks for nothing beyond the download.

Idea Store ships an update every 2 months, Mementia every 2 days. The most recent releases landed on October 10, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Idea Store | Mementia |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 20.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 days** |
| Monetization | Free | — |
| Size | 49 MB | 106 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Idea Store](https://appshunter.io/developer/1468127365) | [Cyberflux Enterprises Private Limited](https://appshunter.io/developer/6779593455) |

## What reviewers say

### Idea Store

[App page](https://appshunter.io/ios/app/idea-store-towerhamlets-libs/id1022368332)

Manage your library account on the go. Search the catalog, renew borrowed items, and place holds on new books directly from your mobile device.

**Highlights:** Manage library account, Search catalog, Renew books, Reserve books, Access from iPhone/iPad

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

**In-app purchases:** none


### Mementia

[App page](https://appshunter.io/ios/app/mementia-journal-and-codex/id6780287952)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Mementia+ | $1.49 | per month |
| Mementia+ | $8.49 | per 6 months |
| Mementia+ | $15.99 | per year |


## Frequently asked questions

### Is Idea Store free?

Idea Store is free to download, with no in-app purchases.

### Is Mementia free?

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

### Do Idea Store or Mementia have ads?

Neither Idea Store nor Mementia shows ads.

### Which is updated more often, Idea Store or Mementia?

Idea Store ships an update every 2 months, and Mementia every 2 days. Most recently, Idea Store was updated on October 10, 2026 and Mementia 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.*