Comparison

Self vs ContractShield

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

Head to head
About

Self

This app provides a private and portable digital identity using zero-knowledge proofs. It allows users to prove their humanity and verify their identity across various applications without sharing unnecessary personal data, enhancing security and privacy in Web3 and beyond.

Highlights
  • zk Passport for secure sign-ins
  • Proof of Humanity verification
  • Web3 and DeFi access
  • Privacy-first data handling
  • One-tap verification
  • Aadhaar support (India)
Features
Read full description

Self is the privacy-first way to prove you're human and verify who you are online (or give your agent a secure identity), without handing over your personal data. Trusted by Google, Opera, and 15M+ users. Verify your real-world identity once using a biometric passport, biometric national ID cards, Aadhaar, or any other supported identity document. Once registered, you can prove the specific attributes services require, such as your humanity, age, or nationality, without ever disclosing the underlying document or your personal information. Key Features: PROOF OF HUMAN: Prove you're a real person rather than an automated or duplicate account. AGE VERIFICATION: Confirm you're over 18 (or any age threshold) without revealing your birthday. Built for social apps, marketplaces, and age-gated services. PRE-KYC: Verify your eligibility (age, country of residence, sanctions, etc.) before any KYC process, only sharing your personal information with companies and institutions once necessary. AGENT ID: Delegate your identity credentials to your autonomous agent, unlocking broader utility and access across the internet. PRIVACY BY DESIGN: Self is using the latest zero-knowledge technology, fully audited by the world’s best security experts. All data is stored locally on the user’s device — never on any servers. When a user verifies their identity, a verifiable credential is created and saved securely in the app. There’s no cloud storage, no centralized database, and no way for anyone - including Self - to access the data without the user's consent. "We’re committed to ensuring developers can build faster with reduced friction while maintaining industry‑leading security standards," said Rich Widmann, Google. "Integrating Self allows us to further this mission with frontier zero‑knowledge solutions." Why Self Defend against bots and duplicate identities Meet age and compliance requirements without surrendering personal information Carry one verified identity across the apps you use, instead of re-uploading documents at every sign-up Help establish a global standard for verified identity that keeps people, not platforms, in control of their data

About

ContractShield

Features
Read full description

Don't sign another contract without checking it first. ContractShield is your AI-powered contract scanner that detects red flags, hidden risks, and unfair terms in seconds. Whether you're reviewing a lease, freelance agreement, employment offer, or business deal, ContractShield helps you understand what you're really agreeing to before you sign. HOW IT WORKS 1. Scan or Upload - Use your camera to scan a paper document or import a PDF from your photo library 2. Instant Analysis - Our rule-based engine scans every clause for 20+ types of red flags including hidden fees, auto-renewal traps, vague liability terms, and one-sided obligations 3. Risk Score - Get a clear risk rating from Low to Critical so you know at a glance whether a contract is safe to sign 4. Detailed Breakdown - Each red flag is explained in plain English with the exact clause highlighted, so you know what's wrong and where to find it WHAT CONTRACTSHIELD DETECTS - Auto-renewal and evergreen clauses - Hidden fees and penalty escalations - One-sided termination rights - Vague or ambiguous language - Unlimited liability exposure - Unfair indemnification requirements - Overly broad non-compete restrictions - Missing essential contract provisions - Inconsistent terms and contradictions - Unreasonable payment terms AI-POWERED ANALYSIS (PRO) Upgrade to Pro and unlock advanced AI analysis powered by cutting-edge language models. Get deeper insights, contextual explanations, negotiation suggestions, and plain-English summaries of complex legal language. BUILT FOR REAL LIFE - Renting an apartment? Scan the lease before you sign - Starting a new job? Review your employment agreement - Hiring a freelancer? Check the service contract - Buying a car? Understand the sale agreement - Running a business? Analyze NDAs and vendor contracts YOUR DATA STAYS PRIVATE ContractShield processes documents on-device whenever possible. Your contracts are never stored on our servers. Local analysis runs entirely on your iPhone or iPad using Apple's built-in text recognition technology. KEY FEATURES - Camera scanning with real-time OCR - PDF import from photo library - Instant red flag detection - Color-coded risk levels (Critical, Warning, Standard) - Detailed flag explanations in plain English - Full scan history with search - Pro tier with AI-powered deep analysis - Dark mode support - Designed for iPhone and iPad ContractShield does not provide legal advice and is not a substitute for an attorney. Always consult a qualified lawyer for legally binding decisions.

Screenshots

Self3 screens
ContractShield4 screens

Verdict

The call

The clearest difference is in-app purchases: Self at none against ContractShield's 2. Self also leads on iOS requirement (15.4 vs 17.0). On price, ads 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. ContractShield sells 2 in-app purchases, starting at $7.99 per month. Self asks for nothing beyond the download.

Scorecard2 real differences · 8 level
Self versus ContractShield: the parameters behind the verdict, then further details
ParameterSelfContractShield
PriceFreeFree
Rating4.4 (25 ratings) — better—
Positive reviews75.0% of reviews—
Number of ratings25 — better—
Update frequencyEvery 11 days—
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.4 — better17.0
Further details — not scored
Size193 MB3 MB
Age rating4+9+
DeveloperProof of Passport, LLC贺 周

In-app purchases

None

Self

No in-app purchases

2 purchases

ContractShield

Subscriptions2
  • ContractShield Pro Monthly$7.991 Month
  • ContractShield Pro Yearly$49.991 Year

Questions

Is Self free?
Self is free to download, with no in-app purchases.
Is ContractShield free?
ContractShield is free to download, with in-app purchases available.
Do Self or ContractShield have ads?
Neither Self nor ContractShield shows ads.

Other comparisons