Comparison

SMS Expert vs K9 Chat

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

Head to head
About

SMS Expert

This app helps professionals manage customer communications via SMS while protecting personal privacy. It offers features like contact grouping, automated replies, and anonymous group messaging for secure client interactions.

Highlights
  • Contact grouping
  • Automated replies
  • Anonymous group send
  • Saved replies (Favorites)
  • Customized auto-replies
  • Conversation printing
Read full description

SMS Expert is for professionals that want to make themselves accessible to their customers via confidential SMS and also need to balance personal privacy with that availability. It will upload your contacts to the application automatically (you can add separate ones directly in the app as well). Why use SMS Expert instead of other texting apps? Our unique features for professionals are Grouping, Rules, and Auto-Replies. First, you group your contacts how you wish, and create auto-reply rules for those groups. Easy drag and drop for configuration of rules and groups. After setting up your groups you can take advantage of some of our unique features including: - Anonymous Group Send, where you can send a text to everyone in a group, but no one can see who else got that message, and replies back are only to you - Favorites, where you can save a reply or part of a reply for future use. - Customized auto-replies to individuals or groups - Printing, where you can print an entire conversation or just the new parts of it, for documentation purposes. This application is ideal for people that maintain confidential client lists and want to communicate via SMS (psychologists, lawyers, financial advisors, rental property owners, salesmen, etc.). **SMS Expert is paired with a free companion app, SMS Expert Lite to facilitate secure communication. ***PLEASE NOTE: A monthly subscription is required after your trial period.

About

K9 Chat

This secure chat application offers end-to-end encryption and zero-trust communication for private teams and organizations. It supports audio, video, screensharing, and voice notes without tracking user activity. Access requires an account provided by an administrator.

Highlights
  • End-to-end encryption
  • Zero-trust communication
  • Anonymous messaging
  • Audio and video calls
  • Screensharing
  • Voice notes
Features
Read full description

K9 Chat is an end-to-end encrypted messaging app for organisations that run their own K9 Chat server. Messages, calls and files are encrypted on your device, so only the people in the conversation can read them. FEATURES • One-to-one and group messaging • Encrypted voice and video calls • Screen sharing • Voice messages • Photo, video and file sharing • Threads, replies and reactions FOR ORGANISATIONS K9 Chat connects only to K9 servers operated by your own organisation, whether on premise, cloud-hosted or hybrid. It is not a public messaging network and does not connect to any other service. BEFORE YOU DOWNLOAD An account is required, and accounts are issued by your organisation's administrator. Without one, you will not be able to sign in.

Screenshots

SMS Expert4 screens
K9 Chat4 screens

Verdict

The call

The clearest difference is in-app purchases: K9 Chat at none against SMS Expert's 1. K9 Chat also leads on update cadence (every 3 weeks vs every 4 months). SMS Expert's advantage is iOS requirement (14.5 vs 18.5). On price, rating, review sentiment and ratings volume 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. SMS Expert sells 1 in-app purchase, starting at $4.99 per month. K9 Chat asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for SMS Expert against 5.0 for K9 Chat. Both are backed by a comparable volume of ratings — 3 and 2 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

SMS Expert ships an update every 4 months, K9 Chat every 3 weeks. The most recent releases landed on October 6, 2026 and October 16, 2026 respectively.

Scorecard4 real differences · 6 level
SMS Expert versus K9 Chat: the parameters behind the verdict, then further details
ParameterSMS ExpertK9 Chat
PriceFreeFree
Rating5.0 (3 ratings)5.0 (2 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings3 — better2
Update frequencyEvery 4 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationSubscriptionFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS14.5 — better18.5
Further details — not scored
Size71 MB254 MB
Age rating4+4+
DeveloperLTCG, LLCColohost LLC

Customer experience

SMS Expert

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

K9 Chat

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

SMS Expert

Subscriptions1
  • Standard Monthly Subscription14 Days trial$4.991 Month
None

K9 Chat

No in-app purchases

Questions

Is SMS Expert free?
SMS Expert is free to download, with in-app purchases available.
Is K9 Chat free?
K9 Chat is free to download, with no in-app purchases.
Which has better reviews, SMS Expert or K9 Chat?
SMS Expert and K9 Chat are both rated 5.0 out of 5 on the App Store, from 3 and 2 ratings respectively.
Do SMS Expert or K9 Chat have ads?
Neither SMS Expert nor K9 Chat shows ads.
Which is updated more often, SMS Expert or K9 Chat?
SMS Expert ships an update every 4 months, and K9 Chat every 3 weeks. Most recently, SMS Expert was updated on October 6, 2026 and K9 Chat on October 16, 2026.

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