# Readify PDF vs StealthVault

The clearest difference is in-app purchases: Readify PDF at none against StealthVault's 4. Readify PDF also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. StealthVault sells 4 in-app purchases, starting at $0.99 per 7 days. Readify PDF asks for nothing beyond the download.

Readify PDF ships an update every 3 weeks, StealthVault fortnightly. The most recent releases landed on September 30, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Readify PDF | StealthVault |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Size | 68 MB | 28 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [颖 罗](https://appshunter.io/developer/1846240393) | [SILUTION LIMITED](https://appshunter.io/developer/1718694115) |

## What reviewers say

### Readify PDF

[App page](https://appshunter.io/ios/app/readify-pdf/id6755715856)

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

**In-app purchases:** none


### StealthVault

[App page](https://appshunter.io/ios/app/stealthvault/id6768168602)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $0.99 | per 7 days |
| Monthly | $1.99 | per month |
| Yearly | $11.99 | per year |
| Lifetime Pro | $24.99 | one-time |


## Frequently asked questions

### Is Readify PDF free?

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

### Is StealthVault free?

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

### Do Readify PDF or StealthVault have ads?

StealthVault shows ads; Readify PDF does not.

### Which is updated more often, Readify PDF or StealthVault?

Readify PDF ships an update every 3 weeks, and StealthVault fortnightly. Most recently, Readify PDF was updated on September 30, 2026 and StealthVault on September 23, 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.*