Comparison

Crypto Tools (De)Encryption vs Crypto String

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

Head to head
About

Crypto Tools (De)Encryption

This app offers a comprehensive suite of cryptographic tools for Apple devices, including encryption, decryption, key management, and certificate analysis. It's designed for developers, security professionals, and technical learners to inspect, validate, and manage sensitive data locally with precision.

Highlights
  • Encrypt and decrypt data with AES-256-GCM
  • Generate, import, inspect, and manage cryptographic keys
  • Parse and analyze ASN.1 structures and certificates
  • Analyze and verify Apple Sign-In JWTs
  • Validate and generate JWS
  • Work with JWT, JWS, and JWE flows
  • QR code workflows and PKPass tooling
Features
Read full description

CryptoTools: Encryption, JWT, Certificates & Forensics for Apple Devices CryptoTools is a privacy-first cryptography and forensic analysis toolkit for Apple devices. Built with SwiftUI, it combines encryption, certificate inspection, ASN.1 parsing, JWT and JWS analysis, JWE support, QR workflows, PKPass tooling, and advanced key utilities in one streamlined app for developers, security professionals, forensic analysts, and technical learners. Designed for transparency and precision, CryptoTools helps you inspect, convert, validate, generate, encrypt, decrypt, and manage sensitive data locally with clear, reproducible results. Features • Encrypt and decrypt data with AES-256-GCM • Generate, import, inspect, and manage cryptographic keys • Parse and analyze ASN.1 structures and certificates • Analyze and verify Apple Sign-In JWTs • Validate and generate JWS in a dedicated UI • Work with JWT, JWS, and JWE flows, including decryption • Use a JWT validator and debugger • Perform SecKey calculations • Generate JWK representations • Export RSA keys to PEM or DER • Manage OpenSSH keys • Generate CSRs • Parse password-protected certificates with OpenSSL • Convert Base64 data quickly and accurately • Share encrypted data through QR codes • Open keys, files, encrypted content, and PKPass workflows via deep links • Access onboarding and in-app technical documentation Built for Real Security Workflows CryptoTools is ideal for testing cryptographic flows, validating signed tokens, inspecting certificates, managing key material, analyzing PKI structures, and sharing protected data across apps and devices. JWT, JWS, JWE & Apple Sign-In Inspect token structure, review claims, verify signatures, generate signed payloads, and decrypt supported JWE content in a dedicated interface. CryptoTools also supports Apple Sign-In JWT analysis and verification using Apple public keys, making authentication debugging faster and clearer. Certificate, ASN.1 & PKI Inspection Explore certificate contents and ASN.1 objects in a readable, structured format designed for debugging, validation, and forensic review. OpenSSL-based parsing also supports password-protected certificate workflows. Key Management & Interoperability Generate, organize, inspect, and transform key material with metadata that supports traceability and repeatable testing. CryptoTools includes JWK generation, RSA export to PEM or DER, OpenSSH key management, CSR generation, and SecKey-based operations for compatibility across common security workflows. QR, Deep Links & PKPass Use QR tools and deep links to move secure or structured data efficiently between systems and apps. PKPass support extends CryptoTools to Wallet-related inspection and testing scenarios. Privacy by Design CryptoTools follows a local-first approach, minimizes unnecessary network activity, and gives users direct visibility into cryptographic operations, certificate inspection, and token analysis. Whether you are validating Apple Sign-In tokens, auditing certificates, generating CSRs, testing JWS or JWE payloads, handling RSA or OpenSSH keys, inspecting PKPass content, or learning applied cryptography, CryptoTools delivers a focused and expert-grade toolkit for Apple platforms. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Crypto String

Features
Read full description

Crypto String is the ultimate secure text encryption app using military-grade AES-256-GCM with authentication. Protect your sensitive information with powerful encryption and Base64 encoding — all 100% offline and private. Core Features • AES-256-GCM Encryption – Military-grade algorithm with custom keys for unique results • Base64 Encode/Decode – Fast and reliable for data transmission and storage • File Import – Directly import text/keys from local files or iCloud Drive • Smart Key Management – Import keys + eye-icon toggle to view/hide safely • History Records – Auto-save last 10 operations with key hints (only first 4 chars) • Multilingual Interface – Automatic language switching • Dark Mode + iOS Native – Built with Apple CryptoKit for maximum security Security First • 100% Local Processing – Nothing uploaded to cloud • No data collection, no accounts, no tracking • Keys never stored in plain text • One-time purchase, no ads, no subscriptions Perfect for protecting passwords, notes, private messages, or business data. Simple, fast, and truly private. Download Crypto String now and encrypt with confidence!

Screenshots

Crypto Tools (De)Encryption4 screens
Crypto String3 screens

Verdict

The call

The clearest difference is price: Crypto Tools (De)Encryption at Free against Crypto String's $0.99. Crypto String's advantage is in-app purchases (none vs 2) and iOS requirement (18.0 vs 26.0). On update cadence, 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

Crypto Tools (De)Encryption is free to download; Crypto String costs $0.99 up front. Crypto Tools (De)Encryption sells 2 in-app purchases, starting at $1.99 per month. Crypto String asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 4 months. The most recent releases landed on June 8, 2026 and September 19, 2026 respectively.

Scorecard3 real differences · 6 level
Crypto Tools (De)Encryption versus Crypto String: the parameters behind the verdict, then further details
ParameterCrypto Tools (De)EncryptionCrypto String
PriceFree — better$0.99
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 4 monthsEvery 4 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhone, iPadiPhone, iPad
Requires iOS26.018.0 — better
Further details — not scored
Size18 MB0 MB
Age rating4+4+
DeveloperHUBO SOFTXu Wang

In-app purchases

2 purchases

Crypto Tools (De)Encryption

Subscriptions2
  • Monthly membership$1.991 Month
  • Annual membership$17.991 Year
None

Crypto String

No in-app purchases

Questions

Is Crypto Tools (De)Encryption free?
Crypto Tools (De)Encryption is free to download, with in-app purchases available.
Is Crypto String free?
Crypto String costs $0.99, with no in-app purchases.
Do Crypto Tools (De)Encryption or Crypto String have ads?
Neither Crypto Tools (De)Encryption nor Crypto String shows ads.
Which is updated more often, Crypto Tools (De)Encryption or Crypto String?
Crypto Tools (De)Encryption ships an update every 4 months, and Crypto String every 4 months. Most recently, Crypto Tools (De)Encryption was updated on June 8, 2026 and Crypto String on September 19, 2026.

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