Comparison

Gataca vs zkMe

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Gataca

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
Read full description

Prove instantly who you are when accessing online services and get control of your data across the web with the Gataca Wallet. With Gataca you can: - Collect and securely store personal data and verifiable credentials from Gataca Partners on your phone - Instantly authenticate and access digital services without using forms or passwords - Prove your identity by sharing only the necessary data - Control and manage access to your personal information in one place - Reduce the risk of someone hacking your data for malicious use - Backup and recover your wallet in case you lose your phone How it works: 1. Set up your wallet: enter your email and the Gataca wallet will create a globally unique identifier and a pair of cryptographic keys that will protect your personal information. 2. Collect credentials: enter information manually like your photo ID, your address or your phone, or download verified credentials from Gataca partners. All the information is securely stored on your phone. Gataca does not keep a copy of your credentials. 3. Sign-up to digital services by scanning a QR code and consenting to share only the necessary information from your wallet. Go to gataca.io for more information

About

zkMe

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
Read full description

———— You, privately verified ———— zkMe verifies user credentials without disclosing any personal information to anyone! Through the use of innovative zero-knowledge technologies, it is the only KYC solution to be fully decentralized, private-by-design and compliant with global AML requirements. ———— Why is zkMe the ultimate tool to protect your privacy? ———— Unlike other eVerification solutions, the zkMe app actually does not share any personal identifiable information (PII) to anyone. By generating mathematical zero-knowledge proofs of knowledge (ZKP), the zkMe app only discloses yes/no answers to a list of predetermined eligibility questions on your credentials. For example, by using the zkMe app, you can prove you are over 18, without disclosing your actual birthday. ———— zkMe got you covered ———— Shield your Privacy - No credential verified through the zkMe app is stored on any centralized storage, making it virtually impossible for any private data leak. The only thing shared (if authorized by you) are yes/no answers to basic eligibility questions such as "are you over 18 years old?". Be Self-Sovereign - The zkMe app puts you in control of any and all sharing of your data, even if that data is anonymized through the use of zero-knowledge. You see and control which proofs have been generated and are active, which chain ecosystems these proofs are being used in and which applications have authorization to verify your eligibility. 3 easy steps to protect your identity online: - Verify credentials and generate ZK proofs - Connect your proofs to the ecosystems you are active in - Authorize the services you want to present proofs to Download the zkMe app to get your journey started today.

Screenshots

Gataca4 screens
zkMe4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

Gataca ships an update every 5 weeks, zkMe every 2 weeks. The most recent releases landed on August 30, 2026 and September 17, 2026 respectively.

Scorecard3 real differences · 7 level
Gataca versus zkMe: the parameters behind the verdict, then further details
ParameterGatacazkMe
PriceFreeFree
Rating4.6 (9 ratings) — better3.4 (5 ratings)
Positive reviews21.1% of reviews — better0.0% of reviews
Number of ratings9 — better5
Update frequencyEvery 5 weeksEvery 2 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPod
Requires iOS15.115 — better
Further details — not scored
Size52 MB211 MB
Age rating4+17+
DeveloperGataca Labs S.L.zkMe Technology Limited

Customer experience

Gataca

All ratings9 ratings
Positive88.9%
Neutral0.0%
Negative11.1%
Written reviews19 reviews
Positive21.1%
Neutral0.0%
Negative78.9%

zkMe

All ratings5 ratings
Positive60.0%
Neutral0.0%
Negative40.0%
Written reviews2 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

Gataca

No in-app purchases

None

zkMe

No in-app purchases

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 August 30, 2026 and zkMe on September 17, 2026.

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