Software Alternatives & Startups

Truecaller VS Cert Decoder

Compare Truecaller VS Cert Decoder and see what are their differences

Note: These products don't have any matching categories. If you think this is a mistake, please edit the details of one of the products and suggest appropriate categories.

Truecaller logo Truecaller

Find a person by a name or phone number worldwide for free using Truecaller.

Cert Decoder logo Cert Decoder

Decode and verify SSL/TLS certificates online. Extract X.509 details including issuer, validity, SAN, and fingerprint. Fast, secure, and browser-based.
  • Truecaller Landing page
    Landing page //
    2023-08-01
  • Cert Decoder
    Image date //
    2025-03-22

Cert Decoder is a free online tool that helps you decode X.509 SSL/TLS certificates in PEM format. It instantly shows important information like the issuer, expiry date, SAN entries, and fingerprint. All data is processed locally in your browser, so nothing is ever sent or stored elsewhere.

Truecaller

$ Details
-
Platforms
-
Release Date
2009 January
Startup details
Country
Sweden
City
Stockholm
Founder(s)
Alan Mamedi
Employees
50 - 99

Truecaller features and specs

  • Caller Identification
    Truecaller identifies unknown numbers and displays the caller's information based on a large database, helping users avoid spam or unwanted calls.
  • Spam Detection
    The app blocks spam calls and messages, reducing the inconvenience of dealing with telemarketers and scammers.
  • Call and SMS Filtering
    Truecaller offers filtering options for both calls and SMS, allowing users to manage and prioritize their communications effectively.
  • User-Generated Database
    The database is updated by user contributions, which means it continuously improves and includes a wide variety of numbers from around the world.
  • Additional Features
    Truecaller includes additional features such as call recording, flash messaging, and contact backup, adding extra value to the user experience.

Possible disadvantages of Truecaller

  • Privacy Concerns
    The app requires access to the user's contacts, which raises privacy issues as this data is uploaded to Truecaller's database.
  • Data Usage
    Constantly updating the database and identifying calls can consume a significant amount of mobile data.
  • Battery Drain
    Running in the background to monitor and block calls can lead to additional battery consumption.
  • False Positives
    Occasionally, legitimate calls may be mistakenly identified as spam, which can lead to missed important calls.
  • In-App Advertisements
    The free version of the app includes advertisements, which can be intrusive and detract from the user experience.

Cert Decoder features and specs

  • User-Friendly Interface
    Cert Decoder is designed with a simple and intuitive interface that makes it easy for users to navigate and use the tool without requiring extensive technical knowledge.
  • Comprehensive Analysis
    The tool provides detailed analyses of certificates, including information about validity, issuer, encryption algorithms, and more, helping users understand their security certificates thoroughly.
  • Free to Use
    Cert Decoder offers its services free of charge, making it accessible for individuals and organizations without budget constraints.
  • Quick Processing
    The tool processes certificate information rapidly, providing almost instant results for users, which is crucial for time-sensitive tasks.

Possible disadvantages of Cert Decoder

  • Limited Advanced Features
    Compared to some paid alternatives, Cert Decoder might lack advanced features that are necessary for more complex certificate management and diagnostics.
  • Reliance on Internet Access
    Users need an active internet connection to utilize the tool, which can be a limitation in areas with unreliable internet service.
  • Privacy Concerns
    While using an online service to decode certificates, there can always be privacy concerns regarding sensitive data being uploaded to a third-party server.
  • No Offline Mode
    Cert Decoder does not offer an offline mode, which could be a drawback for users who require functionality without constant internet availability.

Analysis of Truecaller

Overall verdict

  • Truecaller is generally considered a good service for users seeking to avoid spam calls and improve their call management. However, some privacy concerns have been raised, as the app requires access to contacts and other personal information to function effectively.

Why this product is good

  • Truecaller is widely regarded as a useful tool for managing incoming calls and identifying unknown numbers. It helps in filtering spam calls and messages, provides information about unknown phone numbers, and offers features such as call recording and contact management. Its large user base contributes to a comprehensive database, enhancing its effectiveness in identifying potential spam and fraudulent calls.

Recommended for

    Truecaller is recommended for individuals who receive a high volume of spam or unknown calls, professionals who need efficient call management, and those who prioritize the identification of incoming call sources. Users who are comfortable sharing their contact information with the app to leverage its full functionality may find it particularly beneficial.

Analysis of Cert Decoder

Overall verdict

  • Cert Decoder appears to be a free online tool for decoding and inspecting SSL/TLS certificates, CSRs, and related cryptographic data, making it useful for quick, no-install certificate analysis, though it should be used with awareness of general web tool privacy considerations when handling sensitive certificate data.

Why this product is good

  • Provides quick, browser-based decoding of certificates without needing to install software
  • Useful for troubleshooting SSL/TLS certificate issues on the fly
  • Simple interface aimed at both technical and semi-technical users
  • No cost to use for basic certificate decoding tasks

Recommended for

  • System administrators needing to quickly verify certificate details
  • Developers debugging SSL/TLS configuration issues
  • IT support staff troubleshooting website certificate errors
  • Students or professionals learning about certificate structure and encoding

Truecaller videos

Truecaller | App Review

More videos:

  • Review - Is TrueCaller Worth it? | iOS Android | IRS Spammer | App Review
  • Review - How TrueCaller Works? Crowd Sourcing?

Cert Decoder videos

No Cert Decoder videos yet. You could help us improve this page by suggesting one.

Add video

Category Popularity

0-100% (relative to Truecaller and Cert Decoder)
Call Management
100 100%
0% 0
Decoding
0 0%
100% 100
Caller ID
100 100%
0% 0
Monitoring Tools
0 0%
100% 100

Questions & Answers

As answered by people managing Truecaller and Cert Decoder.

What's the story behind your product?

Cert Decoder's answer:

I built certdecoder.com over the weekend for my own needs. Sometimes in my work, I need to verify and check certificate details.

Which are the primary technologies used for building your product?

Cert Decoder's answer:

certdecoder.com was built using just JavaScript and HTML—simple, fast, and with all processing happening locally in your browser, so no certificate data is sent to any server

How would you describe the primary audience of your product?

Cert Decoder's answer:

certdecoder.com is primarily built for developers, sysadmins, cybersecurity enthusiasts, and DevOps engineers.

Why should a person choose your product over its competitors?

Cert Decoder's answer:

Simple, fast, and reliable. Some similar tools can’t even decode basic certificates. I rigorously tested my tool with many real-world certificates and covered several edge cases where competitors fall short.

Who are some of the biggest customers of your product?

Cert Decoder's answer:

certdecoder.com is primarily built for developers, sysadmins, cybersecurity enthusiasts, and DevOps engineers.

User comments

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Reviews

These are some of the external sources and on-site user reviews we've used to compare Truecaller and Cert Decoder

Truecaller Reviews

9 Best Truecaller Alternatives – 2022
Apart from Truecaller collects way too much data about the users and the security they offer isn’t really top notch. Therefore, here are the 9 best TrueCaller alternatives.
Top 10 Truecaller Alternatives You Can Use
When Truecaller launched, it was one of the first apps to bring universal caller ID services to smartphones, and I loved using the service. However, over the years Truecaller has become too bloated. The app is one of the biggest culprits behind background battery drainage in a smartphone. I also don’t like the fact that the service collects too much data about my calls and...
Source: beebom.com
10 Best Truecaller Alternatives For Android in 2022
There are plenty of caller ID and call blocker apps available for Android smartphones. However, if I had to pick anyone, I would choose the TrueCaller app. TrueCaller is one of the best caller ID and call blocker apps available for Android smartphones on the Play Store.
Source: techviral.net

Cert Decoder Reviews

We have no reviews of Cert Decoder yet.
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Social recommendations and mentions

Based on our record, Truecaller should be more popular than Cert Decoder. It has been mentiond 2 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

Truecaller mentions (2)

  • Is there a service I can buy or something to do about solicitor calls
    Unfortunately, looks like every truecaller bot's been suspended. But you can always just use truecaller.com, their actual site. it's a bit tedious, but works just fine and a loot less annoying than spam calls. Source: about 3 years ago
  • This is a new one for me. I just received 3 spam calls one after the other.
    It would be awesome if you guys could install and the report these numbers on ScamShield [https://scamshield.org.sg]. Sadly iOS only for now. Alternatively I also use TrueCaller on Android [https://truecaller.com]. Normally I pick up the calls and let the recordings play until they auto hang up around 58-59s (probably get billed after that or something). Now the calls I get are all under 30s and yes I also saw a... Source: about 4 years ago

Cert Decoder mentions (1)

  • Banana.dog back from the dead
    Why? Because I built certdecoder.com and couldn’t find a decent place to submit it. So I said screw it — I’ll build my own. With blackjack and hookers. - Source: dev.to / over 1 year ago

What are some alternatives?

When comparing Truecaller and Cert Decoder, you can also consider the following products

CallApp - Free Caller ID & Call Blocker app that allows mobile users to block phone calls, identify calls, blacklist unwanted callers and much more.

Hiya - Know who's calling or texting and block spammers on Android

WhosCall - WhosCall is a reliable caller ID app whose popularity has led to its adoption by many users including international media. You can now manage the numbers calling you regardless of whether they are part of your contact list or not... read more.

CallerSmart - CallerSmart is an application that is basically used for the purpose of looking up mystery phone numbers for free.

Should I Answer? - See what phone numbers are most searched and find ratings and users reviews.

RoboKiller - A paid application for iOS and Android users which blocks and pranks spam callers, such as scammers.