Keybase vs BLK CARDS
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Keybase
Securely message anyone on social media or other platforms without needing their personal contact information. All communications are end-to-end encrypted and accessible across multiple devices. This open-source platform is free and ad-free for all users.
- Secure messaging to social media users
- End-to-end encryption
- Multi-device support
- Open source
- Ad-free
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Keybase is a messaging platform where: • you can write securely to any twitter, reddit, facebook, github, and hacker news user • you don't need to know someone's phone number or email address • all messages are secure, end-to-end encrypted • multi-device: your messages survive and transfer with encryption to new phones & computers Keybase is so much more. It is: • free for everyone, and free of ads • open source (https://github.com/keybase/client) • multi-platform, w/apps for macOS, Linux, and Windows (https://keybase.io/download) By using the Keybase app you agree to the following terms: • you'll be a nice Internet person Keybase for mobile is brand new and we yearn for feedback. Inside the app, click the gear icon and then choose "feedback" to send us a summary of your experience.
BLK CARDS
Easily record any URL to NFC cards or tags in seconds. Share links instantly with a single tap on NFC-enabled smartphones, eliminating the need for manual entry or contact saving. Manage multiple URLs for different situations with a unique list feature.
- Record URLs to NFC cards/tags
- Instant URL opening on NFC-enabled phones
- Share social media, contact, and NFT links
- Create and manage unlimited URL lists
- No signup or profile creation required
- Personalize digital business cards
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A simple and intuitive App to record in 5 seconds any URLs directly to any NFC cards or NFC tags (compatible with all the most popular NFC chips NXP ntag213, ntag215, ntag216 and more). The URL will then instantly open on any NFC-enabled smartphones, in just one tap. No need to add people to your contacts, no more hassle spelling names, social media usernames, phone numbers, or email addresses. Share any URLs for example your Whatsapp, Contact vcard, Linktree, Instagram, Facebook, Twitter, Pinterest, LinkedIn, TikTok, YouTube, Vimeo, Linkpop, Dropbox, Soundcloud, Spotify...even your NFTs on Opensea etc...No signup required, no profile to create, no data to store anywhere, complete freedom. Share your exact URLs directly (no servicing platform in the middle). Manage your contactless digital business card with the unique feature "LIST" that allows you to use NFC-On-Demand. You can create, save and order an unlimited list of URLs, and then pick and choose anytime, anywhere, depending on the situation (business, social, private, public...up to you) and it will open automatically on their phone. The App is brought to you by the team at BLKCARDS.COM a top provider of customizable digital business cards, and NFC cards for marketers and brands. It's the first of its kind on the market and it's free, try it out. Don't have an NFC card yet? No problem. We offer every App user a 15% DISCOUNT on all NFC cards purchased on our store (find your PROMO CODE inside the App), and you can also personalize your digital business card with your own brand, logo or name, so get yours now at www.blkcards.com
Screenshots
Verdict
The clearest difference is rating: BLK CARDS at 5.0 against Keybase's 3.5. BLK CARDS also leads on update cadence (every 10 days vs every 3 months) and iOS requirement (12.0 vs 15.1). Keybase's advantage is ratings volume (323 vs 1). On price, ads, in-app purchases and monetization model 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. Neither carries in-app purchases, so what you see is what you pay.
BLK CARDS holds the better App Store score, 5.0 against 3.5. That said, the two scores are not equally well evidenced: Keybase has 323 ratings behind it against 1, so its average is the more settled of the two.
Keybase ships an update every 3 months, BLK CARDS every 10 days. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.
| Parameter | Keybase | BLK CARDS |
|---|---|---|
| Price | Free | Free |
| Rating | 3.5 (323 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 42.5% of reviews | — |
| Number of ratings | 323 — better | 1 |
| Update frequency | Every 3 months | Every 10 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.1 | 12.0 — better |
| Further details — not scored | ||
| Size | 127 MB | 29 MB |
| Age rating | 4+ | 4+ |
| Developer | Keybase, Inc. | EmerTech Limited |
Customer experience
Keybase
BLK CARDS
Bugs and requests
Keybase
Reported bugs
4 issues- Login screen freezes
- Incompatible with older devices
- Messaging issues and lost chats
- Unreliable file sharing
Requested features
4 requests- Add iPad app support
- Improve message threading and navigation
- Integrate with more social platforms
- Add password manager functionality
BLK CARDS
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Keybase
No in-app purchases
BLK CARDS
No in-app purchases
