Comparison

Hi 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

Hi

This communication app offers free WiFi calls and video calls with friends, along with text, voice, image, and video messaging. It provides unlimited international calls and 720p HD video quality, with a unique 10,000 GB of free cloud storage for photos and videos.

Highlights
  • Free WiFi calls and video calls
  • Text, voice, image, and video messaging
  • Unlimited international calls
  • 720p HD video calls
  • 10,000 GB free video cloud storage
  • Instant photo/video sharing
  • Message status indicators
Features
Read full description

Get the most out of your smartphone with Hi, a free communication app that makes free WiFi calls/video calls with your friends. Send text, voice, image and video messages as well. Save time, save money; switch from phone calls to Hi free WiFi calls now! WHY GET HI? * NO HIDDEN COSTS AND COMPLETELY FREE: There is nothing to purchase and Hi will always be free. * NO SUBSCRIPTION NEEDED: Just enjoy the free WiFi calls and video calls without any subscription fee. * NO TIME LIMITED: There is not a time limitation for calls and you can talk whatever long you want with your friends and family. * AVAILABLE INTERNATIONALLY: You can make unlimited international voice/video calls between your Hi contacts for free with crystal clear audio quality. * NO ADS, NO PRIVACY CONCERN: Hi is completely free and financed by its sister game company. There are NO ADS so you can talk to you friends and family in this highly privacy protected app. * CAN BE USED WITH DATA: All Hi services are available with 4G/3G/EDGE. We charge you nothing. Carrier data charges may apply. * 720P HD VIDEO CALLS: The HD quality video call brings you and your family together wherever you are. * SWITCH FROM VOICE CALL TO VIDEO CALL: You can switch from voice call to HD Video call on the fly. * WORLD'S FIRST 10,000 GB FREE VIDEO CLOUD STORAGE: You'll never run out of space on your phone and miss out on capturing a moment with "Hi". With Thunderclap Technology, you can sync all your photos and videos on Hi and delete local copies to save your phone space. * INSTANT PHOTO/VIDEO SHARING: All your private cloud photo/video shares are instant and costs you no data traffic! * SAME AS SMS: All messages will be stored while your phone is shut off or without network. You can get them immediately when Hi launches next time. * AND MUCH MUCH MORE: Sent/Delivered/Read Status for Messages,Advanced Privacy Settings, Group Chats, Voice Messages, Tens of Thousands of Free Animated Stickers, Multi-Login, Web Chat, Free Custom Chat Bubbles, Share Locations, Free Custom Wallpapers and easily exchange contacts. To help make Hi a better app, please send us your feedback to support@hiapponline.com.

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

Hi4 screens
K9 Chat4 screens

Verdict

The call

The clearest difference is review sentiment: K9 Chat at 100% against Hi's 57%. K9 Chat also leads on rating (5.0 vs 3.1). Hi's advantage is update cadence (daily vs every 3 weeks) and ratings volume (47 vs 2). 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

K9 Chat holds the better App Store score, 5.0 against 3.1. That said, the two scores are not equally well evidenced: Hi has 47 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 57% of Hi's written reviews are positive against 100% of K9 Chat's.

UpkeepUpdate frequency

Hi ships an update daily, K9 Chat every 3 weeks. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

Scorecard5 real differences · 5 level
Hi versus K9 Chat: the parameters behind the verdict, then further details
ParameterHiK9 Chat
PriceFreeFree
Rating3.1 (47 ratings)5.0 (2 ratings) — better
Positive reviews57.2% of reviews100.0% of reviews — better
Number of ratings47 — better2
Update frequencyDaily — betterEvery 3 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.0 — better18.5
Further details — not scored
Size47 MB254 MB
Age rating4+4+
DeveloperHi Technology, Inc.Colohost LLC

Customer experience

Hi

All ratings47 ratings
Positive51.1%
Neutral6.4%
Negative42.6%
Written reviews215 reviews
Positive57.2%
Neutral12.1%
Negative30.7%

K9 Chat

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

Bugs and requests

Hi

Reported bugs

4 issues
  • Verification code not being sent
  • Calls getting disconnected or not connecting
  • Cloud storage issues with photos and videos
  • Compatibility problems with older devices

Requested features

4 requests
  • Add video calling functionality
  • Implement read/delivery receipts for messages
  • Allow deleting entire conversation history
  • Improve notification system

K9 Chat

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Hi

No in-app purchases

None

K9 Chat

No in-app purchases

Questions

Is Hi free?
Hi is free to download, with no in-app purchases.
Is K9 Chat free?
K9 Chat is free to download, with no in-app purchases.
Which has better reviews, Hi or K9 Chat?
K9 Chat is rated higher. Hi averages 3.1 out of 5 from 47 ratings, while K9 Chat averages 5.0 from 2 ratings.
Do Hi or K9 Chat have ads?
Neither Hi nor K9 Chat shows ads.
Which is updated more often, Hi or K9 Chat?
Hi ships an update daily, and K9 Chat every 3 weeks. Most recently, Hi was updated on November 6, 2026 and K9 Chat on November 3, 2026.

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