# Gataca vs zkMe

The clearest difference is rating: Gataca at 4.6 against zkMe's 3.4. Gataca also leads on review sentiment (21% vs 0%). zkMe's advantage is update cadence (every 2 weeks vs every 5 weeks). On price, ratings volume, ads and in-app purchases there is nothing between them.

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

Gataca holds the better App Store score, 4.6 against 3.4. Both are backed by a comparable volume of ratings — 9 and 5 respectively. Written reviews point the same way: 21% of Gataca's written reviews are positive against 0% of zkMe's.

Gataca ships an update every 5 weeks, zkMe every 2 weeks. The most recent releases landed on October 25, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | Gataca | zkMe |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (9 ratings)](https://appshunter.io/ios/app/gataca/id1498607616/reviews)** | [3.4 (5 ratings)](https://appshunter.io/ios/app/zkme/id1672915706/reviews) |
| Number of ratings | **9** | 5 |
| Positive reviews | **21.1% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 2 weeks** |
| Monetization | Free | Free |
| Size | 53 MB | 211 MB |
| Requires iOS | 15.1 | **15** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Gataca Labs S.L.](https://appshunter.io/developer/1738223828) | [zkMe Technology Limited](https://appshunter.io/developer/1672915708) |

## What reviewers say

### Gataca

[App page](https://appshunter.io/ios/app/gataca/id1498607616)

Securely store and manage your digital identity and verifiable credentials. Instantly authenticate to online services without passwords, sharing only the data you choose. Take control of your personal information and reduce data breach risks.

**Highlights:** Securely store verifiable credentials, Instant authentication without passwords, Selective data sharing for privacy, Centralized personal data management, Wallet backup and recovery

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Gataca free?

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

### Is zkMe free?

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

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

Gataca is rated higher. Gataca averages 4.6 out of 5 from 9 ratings, while zkMe averages 3.4 from 5 ratings.

### Do Gataca or zkMe have ads?

Neither Gataca nor zkMe shows ads.

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

Gataca ships an update every 5 weeks, and zkMe every 2 weeks. Most recently, Gataca was updated on October 25, 2026 and zkMe on October 22, 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.*