# Ditto Inventory vs Second Memory

The clearest difference is in-app purchases: Ditto Inventory at none against Second Memory's 3. Ditto Inventory also leads on update cadence (every 2 months vs every 9 months) and iOS requirement (15.0 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. Second Memory sells 3 one-off in-app purchases. Ditto Inventory asks for nothing beyond the download.

Ditto Inventory ships an update every 2 months, Second Memory every 9 months. The most recent releases landed on September 28, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Ditto Inventory | Second Memory |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (5 ratings)](https://appshunter.io/ios/app/ditto-inventory/id1449905935/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 9 months |
| Monetization | Free | — |
| Size | 49 MB | 1 MB |
| Requires iOS | **15.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [DittoLive Incorporated](https://appshunter.io/developer/1449905934) | [Apptown Studio AB](https://appshunter.io/developer/330530757) |

## What reviewers say

### Ditto Inventory

[App page](https://appshunter.io/ios/app/ditto-inventory/id1449905935)

Synchronize inventory data across multiple devices in real-time. Build applications that function even without an internet connection, ideal for commerce or meal ordering.

**Highlights:** Real-time data synchronization, Offline functionality, Peer-to-peer syncing, Cross-platform support (mobile, web, IoT), Inventory management applications

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

**In-app purchases:** none


### Second Memory

[App page](https://appshunter.io/ios/app/second-memory/id1476374852)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Storage of 50 extra memories | $0.99 | one-time |
| Storage of 100 extra memories | $1.99 | one-time |
| Unlimited storage of memories | $2.99 | one-time |


## Frequently asked questions

### Is Ditto Inventory free?

Ditto Inventory is free to download, with no in-app purchases.

### Is Second Memory free?

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

### Do Ditto Inventory or Second Memory have ads?

Neither Ditto Inventory nor Second Memory shows ads.

### Which is updated more often, Ditto Inventory or Second Memory?

Ditto Inventory ships an update every 2 months, and Second Memory every 9 months. Most recently, Ditto Inventory was updated on September 28, 2026 and Second Memory on October 21, 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.*