# Shadow Vault vs Bubble Diagram Maker

The clearest difference is review sentiment: Bubble Diagram Maker at 50% against Shadow Vault's 0%. Bubble Diagram Maker also leads on in-app purchases (none vs 1) and ads (none vs shown). Shadow Vault's advantage is iOS requirement (16.0 vs 18). On price, update cadence and device support there is nothing between them.

Both are free to download. Shadow Vault sells 1 one-off in-app purchase. Bubble Diagram Maker asks for nothing beyond the download.

Shadow Vault ships an update every 5 weeks, Bubble Diagram Maker every 3 weeks. The most recent releases landed on June 5, 2026 and September 6, 2026 respectively.

## The numbers

| Metric | Shadow Vault | Bubble Diagram Maker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.6 (7 ratings)](https://appshunter.io/ios/app/bubble-diagram-maker/id6747011494/reviews)** |
| Number of ratings | — | **7** |
| Positive reviews | 0.0% of reviews | **50.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 5 weeks | **Every 3 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 13 MB | 4 MB |
| Requires iOS | **16.0** | 18 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Tung Vu](https://appshunter.io/developer/870117448) | [Bahattin Duran](https://appshunter.io/developer/1677311418) |

## What reviewers say

### Shadow Vault

[App page](https://appshunter.io/ios/app/shadow-vault/id1561340715)

Securely store your private notes, photos, videos, and contacts in one place. Organize your hidden data with a powerful tagging system and access it easily with biometric authentication. Sync your information across devices for seamless management.

**Highlights:** Biometric lock (Touch ID/Face ID), iCloud sync, Markdown support for notes, Delete original media after import, Omni toolbar for editing, Tagging system for organization

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Advertisement | $7.99 | one-time |


### Bubble Diagram Maker

[App page](https://appshunter.io/ios/app/bubble-diagram-maker/id6747011494)

Create visual diagrams for planning, conceptual thinking, and organization. Easily arrange and customize elements to bring your ideas to life without complex tools. Save and share your creations privately.

**Highlights:** Tap & Drag Creation, Full Customization (color, size, label), Unlimited Diagrams, Save & Share, Offline Functionality, Ad-Free Experience

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

**In-app purchases:** none


## Frequently asked questions

### Is Shadow Vault free?

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

### Is Bubble Diagram Maker free?

Bubble Diagram Maker is free to download, with no in-app purchases.

### Do Shadow Vault or Bubble Diagram Maker have ads?

Shadow Vault shows ads; Bubble Diagram Maker does not.

### Which is updated more often, Shadow Vault or Bubble Diagram Maker?

Shadow Vault ships an update every 5 weeks, and Bubble Diagram Maker every 3 weeks. Most recently, Shadow Vault was updated on June 5, 2026 and Bubble Diagram Maker on September 6, 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.*