# DecompAI vs Vault Notes

The clearest difference is in-app purchases: DecompAI at none against Vault Notes's 2. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Vault Notes sells 2 in-app purchases, starting at $4.99 per month. DecompAI asks for nothing beyond the download.

DecompAI ships an update weekly, Vault Notes every 6 days. The most recent releases landed on October 10, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | DecompAI | Vault Notes |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 6 days** |
| Size | 21 MB | 17 MB |
| Requires iOS | 18.0 | 18.0 |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Dmitry Kadyrov](https://appshunter.io/developer/1575763490) | [Andre Schoolman](https://appshunter.io/developer/6790647704) |

## What reviewers say

### DecompAI

[App page](https://appshunter.io/ios/app/decompai/id6746642904)

**In-app purchases:** none


### Vault Notes

[App page](https://appshunter.io/ios/app/vault-notes-notes-you-own/id6790647702)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $4.99 | per month |
| Yearly | $49.99 | per year |


## Frequently asked questions

### Is DecompAI free?

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

### Is Vault Notes free?

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

### Do DecompAI or Vault Notes have ads?

Neither DecompAI nor Vault Notes shows ads.

### Which is updated more often, DecompAI or Vault Notes?

DecompAI ships an update weekly, and Vault Notes every 6 days. Most recently, DecompAI was updated on October 10, 2026 and Vault Notes on October 6, 2026.

---

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