# zkMe vs Opacity

The clearest difference is rating: Opacity at 5.0 against zkMe's 3.4. zkMe's advantage is iOS requirement (15 vs 17.0). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Opacity holds the better App Store score, 5.0 against 3.4. Both are backed by a comparable volume of ratings — 5 and 3 respectively.

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on October 5, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | zkMe | Opacity |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.4 (5 ratings)](https://appshunter.io/ios/app/zkme/id1672915706/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/opacity/id6743722717/reviews)** |
| Number of ratings | **5** | 3 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 weeks | Every 2 weeks |
| Monetization | Free | Free |
| Size | 211 MB | 74 MB |
| Requires iOS | **15** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [zkMe Technology Limited](https://appshunter.io/developer/1672915708) | [Opacity Labs](https://appshunter.io/developer/1751419895) |

## What reviewers say

### zkMe

[App page](https://appshunter.io/ios/app/zkme/id1672915706)

This app uses zero-knowledge technology to verify credentials without revealing personal information. It allows users to prove eligibility for services by answering yes/no questions about their data, ensuring privacy and control.

**Highlights:** Zero-knowledge credential verification, Decentralized and private-by-design, Proves eligibility without disclosing PII, Self-sovereign data control, Generates mathematical zero-knowledge proofs, Verifies age without revealing birthday

**Features:** macOS Compatibility

**In-app purchases:** none


### Opacity

[App page](https://appshunter.io/ios/app/opacity/id6743722717)

Securely store and manage your digital identity, including logins and credentials. Prove facts about yourself without revealing sensitive data, and share verified information with full transparency. Maintain control over your online presence and reputation.

**Highlights:** Private, verified identity vault, Store logins and credentials, Prove identity facts without data exposure, Share verified information transparently, Connect and manage accounts, Build online reputation

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is zkMe free?

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

### Is Opacity free?

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

### Which has better reviews, zkMe or Opacity?

Opacity is rated higher. zkMe averages 3.4 out of 5 from 5 ratings, while Opacity averages 5.0 from 3 ratings.

### Do zkMe or Opacity have ads?

Neither zkMe nor Opacity shows ads.

### Which is updated more often, zkMe or Opacity?

zkMe ships an update every 2 weeks, and Opacity every 2 weeks. Most recently, zkMe was updated on October 5, 2026 and Opacity on October 3, 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.*