Comparison

C.SIGN vs SSL Certificate Checker

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

Head to head
About

C.SIGN

Features
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C.SIGN IS A SMART SECURITY KEY FOR ONLINE SERVICES. C.SIGN GIVES USERS THE ABILITY TO SECURELY AUTHORIZE AND APPROVE THE SIGNING OF DOCUMENTS OR TRANSACTIONS. RELYING PARTY CAN TRIGGER THE SIGNING PROCESS AND USERS CAN AUTHORIZE THIS REMOTELY FROM THEIR MOBILE DEVICE USING TWO-FACTOR AUTHENTICATION KEY FEATURES: - ASSIST IN ARCHIVING EU EIDAS QUALIFIED REMOTE SIGNING (TS 419 241 LEVEL 2 SOLE CONTROL) FOR SERVER-SIDE SIGNING - AUTOMATICALLY LOAD AUTHORIZATION REQUESTS TO NOTIFY USERS - CRYPTOGRAPHICALLY PROTECTED AUTHORIZATION FILE THAT HOLDS THE SIGNATURE ACTIVATION DATA - AUTHENTICATE USING TOUCHID, FACEID OR PIN CODE TO ACCESS AUTHORIZATION KEY - WORKS WITH ANY SERVER-SIDE SIGNING PROCESS SIMPLICITY: - INTUITIVE AND EASY TO USE FOR NON-TECHNICAL USERS - ALLOW USERS TO APPROVE PENDING AUTHORIZATION REQUESTS QUICKLY AND REMOTELY - ALLOW ORGANIZATIONS TO CONNECT WITH THEIR OWN HOSTED SERVERS ADVANCED SECURITY: - GENERATION OF AUTHORIZATION KEY USING RSA ALGORITHM - KEYS STORED IN SECURE ENCLAVE OF MOBILE DEVICE AND LOCKED WITH TOUCHID/FACEID OR PIN CODE - AES 256-BIT ENCRYPTION OVER TLS/SSL - TOUCHID, FACEID OR PIN CODE FOR UNBLOCKING ACCESS TO THE SECURE ENCLAVE TRACEABILITY: - SIGNING EVIDENCE EMBEDDED INSIDE THE DIGITALLY SIGNED AUTHORIZATION RESPONSE UTILITIES: - ALLOWED THE CUSTOMER ONBOARDING EASIER - CHECK THE VALID IMAGES OF AN ID AND EXTRACT INFORMATION FROM PHOTO OF AN ID - CHECK FOR A MATCH BETWEEN A SELFIE AND AN ID. CHECK IF A SELFIE IS CAPTURED LIVE AND NOT FABRICATED - CHECK FOR A VALID SELFIE. CHECK IF A FACE EXISTS IN RECORDS

About

SSL Certificate Checker

Monitor the health of SSL/TLS certificates for websites and services. Quickly check expiry dates, status, and security configurations. Designed for a simple daily workflow of scanning, reviewing risks, and taking action.

Highlights
  • Monitor SSL/TLS certificate health
  • Check expiry date and days left
  • Classify certificate status (OK, Expiring, Expired, Failed)
  • View issuer, subject, and SAN details
  • Inspect negotiated TLS protocol and cipher suite
  • Perform single target or full list scans
  • Store saved targets and results locally
Features
Read full description

SSL Certificate Checker helps you monitor SSL/TLS certificate health for the websites and services you care about. Add one or more targets (hostname + port, default 443), run a check instantly, or scan your whole list in one tap. The app is designed for a quick daily workflow: open, scan, review risk, and act. What you can check: - Expiry date and days left - Status classification: OK, Expiring, Expired, Failed - Issuer and subject - SAN (Subject Alternative Name) - Serial number and signature details - SHA-256 certificate fingerprint - SHA-256 public key fingerprint - Negotiated TLS protocol and cipher suite Key workflows: - Single target check for immediate troubleshooting - Full list scan for regular maintenance - Saved targets and latest results stored locally on device - Optional periodic background checks (can be turned on/off) Built for practical certificate operations: - Quickly identify certificates close to expiration - Compare protocol/cipher negotiation outcomes - Keep a simple watchlist for internal or public endpoints - Generate and review report-style outputs inside the app Security perspective for connected-device teams: - Includes TLS protocol and cipher suite visibility to support baseline security reviews - Helps teams spot weak or unexpected negotiated ciphers during routine checks - Useful as an evidence aid for internal security discussions and release readiness - Designed as a practical checker, not a complete legal/compliance assessment tool Regulatory context note: - In the EU, RED cybersecurity delegated requirements under Directive 2014/53/EU Article 3(3)(d)(e)(f) apply from August 1, 2025 for covered products - This app can support early HTTPS/TLS posture checks, but it does not certify compliance with RED-DA, EN 18031, or any other regulation/standard on its own Privacy and control: - No account is required to start checking - Targets and recent check results are kept locally for your routine usage - Privacy policy and terms are available from within the app Current release focus: - Core SSL/TLS checking flow and result parsing are available - Batch checking and retry flow are available - iOS background checks are best-effort (system-scheduled) - Multilingual UI foundation is integrated; some languages are still being refined This app is suitable for developers, operators, site owners, and anyone who wants a simple way to track certificate validity and TLS configuration from a mobile device.

Screenshots

C.SIGN4 screens
SSL Certificate Checker4 screens

Verdict

The call

The clearest difference is iOS requirement: C.SIGN at 13.0 against SSL Certificate Checker's 15.0. On price, update cadence, 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.

UpkeepUpdate frequency

C.SIGN ships an update every 2 weeks, SSL Certificate Checker monthly. The most recent releases landed on November 3, 2026 and November 7, 2026 respectively.

Scorecard1 real difference · 9 level
C.SIGN versus SSL Certificate Checker: the parameters behind the verdict, then further details
ParameterC.SIGNSSL Certificate Checker
PriceFreeFree
Rating—5.0 (2 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—2 — better
Update frequencyEvery 2 weeks — betterMonthly
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better15.0
Further details — not scored
Size162 MB31 MB
Age rating4+4+
DeveloperCMC Technology and Solution Company LimitedYuan-Yi Chang

In-app purchases

None

C.SIGN

No in-app purchases

None

SSL Certificate Checker

No in-app purchases

Questions

Is C.SIGN free?
C.SIGN is free to download, with no in-app purchases.
Is SSL Certificate Checker free?
SSL Certificate Checker is free to download, with no in-app purchases.
Do C.SIGN or SSL Certificate Checker have ads?
Neither C.SIGN nor SSL Certificate Checker shows ads.
Which is updated more often, C.SIGN or SSL Certificate Checker?
C.SIGN ships an update every 2 weeks, and SSL Certificate Checker monthly. Most recently, C.SIGN was updated on November 3, 2026 and SSL Certificate Checker on November 7, 2026.

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