SMS Expert vs K9 Chat
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Contact grouping
- Automated replies
- Anonymous group send
- Saved replies (Favorites)
- Customized auto-replies
- Conversation printing
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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.
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.
- End-to-end encryption
- Zero-trust communication
- Anonymous messaging
- Audio and video calls
- Screensharing
- Voice notes
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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
Verdict
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
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.
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.
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.
| Parameter | SMS Expert | K9 Chat |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) | 5.0 (2 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 3 — better | 2 |
| Update frequency | Every 4 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Subscription | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 14.5 — better | 18.5 |
| Further details — not scored | ||
| Size | 71 MB | 254 MB |
| Age rating | 4+ | 4+ |
| Developer | LTCG, LLC | Colohost LLC |
Customer experience
SMS Expert
K9 Chat
In-app purchases
SMS Expert
- Standard Monthly Subscription14 Days trial$4.991 Month
K9 Chat
No in-app purchases









