Self vs SimpleScan
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- zk Passport for secure sign-ins
- Proof of Humanity verification
- Web3 and DeFi access
- Privacy-first data handling
- One-tap verification
- Aadhaar support (India)
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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
SimpleScan
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SimpleScan is a fast and powerful PDF scanner that lets you scan documents, receipts, notes, and photos using your phone. Turn your camera into a portable document scanner and create high-quality PDF files in seconds. Features: • Scan documents with your camera • Convert images into high-quality PDF files • Merge multiple pages into a single PDF • Export and share documents instantly • Keep all your scans organized in one place SimpleScan is perfect for students, professionals, and anyone who needs a quick and reliable document scanner.
Screenshots
Verdict
The clearest difference is in-app purchases: Self at none against SimpleScan's 2. SimpleScan's advantage is update cadence (daily vs every 9 days). On price, ads, device support and iOS requirement 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
Both are free to download. SimpleScan sells 2 in-app purchases, starting at $1.49 per month. Self asks for nothing beyond the download.
Self ships an update every 9 days, SimpleScan daily. The most recent releases landed on September 15, 2026 and September 14, 2026 respectively.
| Parameter | Self | SimpleScan |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (23 ratings) — better | — |
| Positive reviews | 75.0% of reviews | — |
| Number of ratings | 23 — better | — |
| Update frequency | Every 9 days | Daily — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 15.4 | 15.1 — better |
| Further details — not scored | ||
| Size | 193 MB | 39 MB |
| Age rating | 4+ | 4+ |
| Developer | Proof of Passport, LLC | Valerian Shonia |
In-app purchases
Self
No in-app purchases
SimpleScan
- SimpleScan Pro Monthly$1.491 Month
- SimpleScan Pro3 Days trial$17.991 Year









