Comparison

1Kosmos vs CallHarbor Messenger

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

Head to head
About

1Kosmos

Securely access digital services without passwords using advanced biometrics and a privacy-first approach. This app automates identity proofing, provides a digital wallet for passwordless logins, and gives you control over your personal data.

Highlights
  • Passwordless authentication
  • Biometric identity verification
  • Digital identity wallet
  • Automated identity proofing
  • Data privacy control
  • Secure account access
Features
Read full description

Experience secure, passwordless access with the 1Kosmos mobile app (Formerly BlockID) - your personal digital identity and authentication wallet. 1Kosmos uses advanced biometrics and a privacy-by-design approach to verify your identity and protect your personal information, letting you access digital services safely and efficiently without passwords. The app automates identity proofing at account creation, issues you a digital wallet for passwordless account access, and gives you complete control over your data, preventing unauthorized access by third parties. Whether signing up for a new service, logging in to work, or managing sensitive information, the 1Kosmos mobile app (Formerly BlockID) delivers a seamless, privacy-first experience on any device. Backed by industry certifications and trusted by Fortune 500 companies and government agencies, 1Kosmos helps reduce fraud, protect against account takeover, and keep your data private - all in one easy-to-use app.

About

CallHarbor Messenger

Send and receive text and picture messages using your dedicated business phone number. Access your conversations from multiple devices and allow your team to manage incoming messages from a single business number.

Highlights
  • Send/receive texts from business number
  • Supports picture messages
  • Use on multiple devices
  • Web browser access
  • Team access to shared numbers
Features
Read full description

With CallHarbor Messenger, you can send and receive texts from your CallHarbor business phone numbers. Make and receive text messages using your business phone number! Use your business phone number to text instead of your personal number Send and receive text and picture messages to/from any cell phone number in the continental US View your messages on multiple devices: Use your account on multiple devices with one sign-in Access your messages from any computer via your browser (Chrome/Firefox/Edge) Multiple users can access the same number so you or your team can reply to any message Now your customers can communicate with you with the ease and convenience that they have when texting with friends and family. No need to download a separate messaging “app” to contact you - they can simply text your business number and get in touch.

Screenshots

1Kosmos4 screens
CallHarbor Messenger4 screens

Verdict

The call

The clearest difference is update cadence: 1Kosmos at monthly against CallHarbor Messenger's every 17 months. 1Kosmos also leads on ratings volume (432 vs 2). CallHarbor Messenger's advantage is rating (5.0 vs 4.8) and iOS requirement (14.0 vs 16.0). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

CallHarbor Messenger holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: 1Kosmos has 432 ratings behind it against 2, so its average is the more settled of the two.

UpkeepUpdate frequency

1Kosmos ships an update monthly, CallHarbor Messenger every 17 months. The most recent releases landed on November 7, 2026 and November 4, 2026 respectively.

Scorecard4 real differences · 6 level
1Kosmos versus CallHarbor Messenger: the parameters behind the verdict, then further details
Parameter1KosmosCallHarbor Messenger
PriceFreeFree
Rating4.8 (432 ratings)5.0 (2 ratings) — better
Positive reviews51.0% of reviews—
Number of ratings432 — better2
Update frequencyMonthly — betterEvery 17 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.014.0 — better
Further details — not scored
Size54 MB52 MB
Age rating4+4+
Developer1Kosmos Inc.,Active Solutions Group, Inc.

In-app purchases

None

1Kosmos

No in-app purchases

None

CallHarbor Messenger

No in-app purchases

Questions

Is 1Kosmos free?
1Kosmos is free to download, with no in-app purchases.
Is CallHarbor Messenger free?
CallHarbor Messenger is free to download, with no in-app purchases.
Which has better reviews, 1Kosmos or CallHarbor Messenger?
CallHarbor Messenger is rated higher. 1Kosmos averages 4.8 out of 5 from 432 ratings, while CallHarbor Messenger averages 5.0 from 2 ratings.
Do 1Kosmos or CallHarbor Messenger have ads?
Neither 1Kosmos nor CallHarbor Messenger shows ads.
Which is updated more often, 1Kosmos or CallHarbor Messenger?
1Kosmos ships an update monthly, and CallHarbor Messenger every 17 months. Most recently, 1Kosmos was updated on November 7, 2026 and CallHarbor Messenger on November 4, 2026.

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