Comparison

Polygon ID vs Chain

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

Head to head
About

Polygon ID

Create and manage your self-sovereign digital identity. Prove access rights and reputation privately using zero-knowledge cryptography. Access web3 and web2 services with secure, private on-chain verifications.

Highlights
  • Create and manage digital identity
  • Prove access rights privately
  • Manage verifiable claims
  • Generate private proofs
  • Secure authentication (biometrics/PIN)
  • Identity recovery with seed phrase
Read full description

Polygon ID enables you to create and manage your own self-sovereign digital identity. Prove your access rights and reputation without revealing any of your personal information. Manage verifiable claims about your identity and generate private proofs for digital interactions. Polygon ID is an open-source and private by default identity system based on zero-knowledge cryptography (zkSNARK). With the Polygon ID app, you will have access to web3 and web2 services and the ability for private on-chain verifications. Convenient control: - Secure authentication with biometrics or a 6-digit PIN - Identity recovery with seed phrase mechanism Obtaining claims: - Scan an issuer’s QR code - Follow the steps to connect your identity with the issuer and retrieve your claims - Store and manage your claims from your wallet Presenting your private proofs: - Scan a verifier’s QR code - Accept the proof request presented in your wallet - Generate and share the private proof of your claims with the verifier.

About

Chain

Features
Read full description

A two-factor authentication (2FA) app serves as an additional security layer, enhancing protection by requiring users to confirm operations through QR code scanning.

Screenshots

Polygon ID4 screens
Chain4 screens

Verdict

The call

The clearest difference is update cadence: Polygon ID at every 3 weeks against Chain's every 2 months. On price, ads, in-app purchases and device support 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.

UpkeepUpdate frequency

Polygon ID ships an update every 3 weeks, Chain every 2 months. The most recent releases landed on October 11, 2026 and October 15, 2026 respectively.

Scorecard1 real difference · 9 level
Polygon ID versus Chain: the parameters behind the verdict, then further details
ParameterPolygon IDChain
PriceFreeFree
Rating4.3 (7 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings7 — better—
Update frequencyEvery 3 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.0 — better15.1
Further details — not scored
Size156 MB31 MB
Age rating4+4+
DeveloperZKID Labs AGMBP Enterprises LTD

In-app purchases

None

Polygon ID

No in-app purchases

None

Chain

No in-app purchases

Questions

Is Polygon ID free?
Polygon ID is free to download, with no in-app purchases.
Is Chain free?
Chain is free to download, with no in-app purchases.
Do Polygon ID or Chain have ads?
Neither Polygon ID nor Chain shows ads.
Which is updated more often, Polygon ID or Chain?
Polygon ID ships an update every 3 weeks, and Chain every 2 months. Most recently, Polygon ID was updated on October 11, 2026 and Chain on October 15, 2026.

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