# KeyVault Studio vs One Dev Tools

The clearest difference is in-app purchases: KeyVault Studio at none against One Dev Tools's 2. KeyVault Studio also leads on update cadence (daily vs fortnightly) and device support (3 vs 1). One Dev Tools's advantage is iOS requirement (17.6 vs 26.0). On price and ads there is nothing between them.

Both are free to download. One Dev Tools sells 2 one-off in-app purchases. KeyVault Studio asks for nothing beyond the download.

KeyVault Studio ships an update daily, One Dev Tools fortnightly. The most recent releases landed on September 24, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | KeyVault Studio | One Dev Tools |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Daily** | Fortnightly |
| Size | 35 MB | 20 MB |
| Requires iOS | 26.0 | **17.6** |
| Devices | **iPhone, iPad, Mac** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Stephan Bail](https://appshunter.io/developer/1836130527) | [Selma Lindqvist](https://appshunter.io/developer/1896618449) |

## What reviewers say

### KeyVault Studio

[App page](https://appshunter.io/ios/app/keyvault-studio/id6759035356)

**Features:** Vision Pro support

**In-app purchases:** none


### One Dev Tools

[App page](https://appshunter.io/ios/app/one-dev-tools/id6768955248)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Theme Neon Violet | $1.99 | one-time |
| One Casino | $1.99 | one-time |


## Frequently asked questions

### Is KeyVault Studio free?

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

### Is One Dev Tools free?

One Dev Tools is free to download, with in-app purchases available.

### Do KeyVault Studio or One Dev Tools have ads?

Neither KeyVault Studio nor One Dev Tools shows ads.

### Which is updated more often, KeyVault Studio or One Dev Tools?

KeyVault Studio ships an update daily, and One Dev Tools fortnightly. Most recently, KeyVault Studio was updated on September 24, 2026 and One Dev Tools on September 27, 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.*