# Uplock vs 4DI

The clearest difference is in-app purchases: 4DI at none against Uplock's 7. 4DI also leads on update cadence (weekly vs fortnightly). Uplock's advantage is device support (5 vs 1). On price, ads and iOS requirement there is nothing between them.

Both are free to download. Uplock sells 7 in-app purchases, starting at $3.99 per month. 4DI asks for nothing beyond the download.

Uplock ships an update fortnightly, 4DI weekly. The most recent releases landed on November 7, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Uplock | 4DI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (129 ratings)](https://appshunter.io/ios/app/uplock/id6469049274/reviews)** | — |
| Number of ratings | **129** | — |
| Positive reviews | 78.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Size | 74 MB | 5 MB |
| Requires iOS | **18.4** | 18.6 |
| Devices | **iPhone, iPad, Mac, Apple Watch, Vision Pro** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Foyer Objet Inc.](https://appshunter.io/developer/1611012799) | [Robert Poetzsch](https://appshunter.io/developer/1860642630) |

## What reviewers say

### Uplock

[App page](https://appshunter.io/ios/app/uplock/id6469049274)

Securely store and organize sensitive information like credit cards, documents, and notes across your Apple devices. It offers end-to-end encryption with iCloud Advanced Data Protection and supports biometric authentication for quick access.

**Highlights:** Secure storage for cards, IDs, and documents, iCloud sync with end-to-end encryption, Biometric authentication (Face ID, Touch ID, Optic ID), AutoFill and Safari extension, Shared Groups for families, Reminders for expiration dates, Smart Fill powered by Apple Intelligence

**Features:** Family Sharing, Apple Watch app, iPhone Duo support

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Uplock+ (Monthly) | $3.99 | per month |
| Uplock+ Family (Monthly) | $4.99 | per month |
| Uplock+ (Yearly) | $19.99 | per year |
| Uplock+ Family (Yearly) | $29.99 | per year |
| Family Lifetime Upgrade | $39.99 | one-time |
| Uplock+ Individual (Lifetime) | $49.99 | one-time |
| Uplock+ Family (Lifetime) | $89.99 | one-time |

**What reviewers like**

- 🚀 Excellent product fills the gap
- 🔒 Secure and Simple Data Locker
- 👍 Totally worth it
- 👍 A perfect compliment to Apple Passwords
- 👍 Feels very safe

**What reviewers complain about**

- 🐛 Unstable, missing functionality, not sure if trustworthy
- ⚠️ White print on light blue impossible to read
- ⚠️ No reason for this to be a subscription
- ⚠️ Lack of functionality is baffling
- ⚠️ Crashes on Intel Macs

**Reported bugs**

- Name change issue (searchable only under old name)
- Help menu not working
- Editing issues (cursor jumping, slow typing)
- Import issues
- Crashes on Intel Macs

**Requested features**

- More categories needed
- Autofill
- Other languages (German, French, Spanish etc.)
- Windows App
- Shared groups


### 4DI

[App page](https://appshunter.io/ios/app/4di-data-integrity-tool/id6760180866)

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

**In-app purchases:** none


## Frequently asked questions

### Is Uplock free?

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

### Is 4DI free?

4DI is free to download, with no in-app purchases.

### Do Uplock or 4DI have ads?

Neither Uplock nor 4DI shows ads.

### Which is updated more often, Uplock or 4DI?

Uplock ships an update fortnightly, and 4DI weekly. Most recently, Uplock was updated on November 7, 2026 and 4DI on October 31, 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.*