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Lark vs PubNub comparison

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Comparison Buyer's Guide

Executive Summary

Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Categories and Ranking

Lark
Ranking in AWS Marketplace
45th
Average Rating
7.4
Number of Reviews
3
Ranking in other categories
No ranking in other categories
PubNub
Ranking in AWS Marketplace
18th
Average Rating
8.0
Number of Reviews
6
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of October 2026, in the AWS Marketplace category, the mindshare of Lark is 0.3%, up from 0.1% compared to the previous year. The mindshare of PubNub is 0.3%, down from 0.5% compared to the previous year. It is calculated based on PeerSpot user engagement data.
AWS Marketplace Mindshare Distribution
ProductMindshare (%)
PubNub0.3%
Lark0.3%
Other99.4%
AWS Marketplace
 

Featured Reviews

reviewer2858913 - PeerSpot reviewer
Marketing Specialist (Acquisition & Retention) at a manufacturing company with 10,001+ employees
Team collaboration has improved and project tracking is clearer but downtime still causes disruption
I think there are some parts of Lark that have not been translated, and sometimes there is a glitch where the product still uses Chinese words. Lark occasionally experiences downtime, and during those times, we usually use WhatsApp for communication and coordination, which can be frustrating. Regarding Lark's AI capabilities, I believe they are good in terms of governance and security. I think there is still room for improvement regarding the accuracy and reliability of Lark's AI output.
Kirtishil Patil - PeerSpot reviewer
Senior Frontend Developer at Globant
Real-time chat has boosted one-to-one messaging and user engagement in my mobile projects
The best features PubNub offers, in my opinion, are one-to-one chat, as I mentioned in my review, and the great SDK documentation which allows for easy integration that does not take much time. Setting up channels, message listeners, tracking user status to determine whether users are online or offline, and ensuring reliable message delivery are all great features. I find myself relying on all three of those features the most because the presence tracking is great, the delivery speed is superb compared to other SDKs, and the user status updates immediately pop up, which is significant. The integration is very easy, so any new developers can easily understand the integration process thanks to the clear documentation. PubNub has positively impacted my organization as I have received numerous reviews and feedback stating that the chat works much faster and cleaner, and everyone appreciates it, saying it feels powerful. After implementing PubNub, I noticed positive outcomes such as client feedback acknowledging that they enjoyed the chat features and found them much faster than in other applications, which I believe is very positive feedback for any organization.

Quotes from Members

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Pros

"Lark has impacted my organization positively; it has been a daily driver and has been excellent."
"Lark has positively impacted my organization by helping us reorganize the to-do work, allowing us to focus more on our tasks."
"Lark has positively impacted my organization because our team's work has become more noticeable by the management because we have a clear record of what's going on in the emails and with the work on the technical side."
"PubNub saves development time because we do not have to create a complete chat backend and frontend from scratch, enabling a plug-and-play approach that saves time, effort, and money for the company."
"PubNub has positively impacted my organization as I have received numerous reviews and feedback stating that the chat works much faster and cleaner, and everyone appreciates it, saying it feels powerful."
"If we had implemented all of this on our own, we would have had to hire at least 50 more employees for that, so we are very happy with PubNub and we have saved a lot of time."
"The speed and efficiency of PubNub, which helps transfer data in real-time with very low latency, received positive feedback from our customers."
"PubNub's push notification and chat features stand out because of ease of use and very easy integration within our application."
"PubNub has positively impacted my organization by reducing implementation time and developers' work, making it very easy to implement and enabling fast development that has reduced the developers' time by 40-50%."
 

Cons

"I have not seen a return on investment at this time; I cannot share any relevant metrics such as time saved, money saved, or fewer employees needed."
"Lark can be improved by having the ability to switch between personal and team space."
"Lark occasionally experiences downtime, and during those times, we usually use WhatsApp for communication and coordination, which can be frustrating."
"Most of the time there are some instances at the load peak hours or sometimes payload is missed by the application or SDK at the SDK level."
"I gave PubNub a rating of nine out of ten because of the many features discussed, but I deducted one point because the cost increases with scale."
"Regarding customer support from PubNub, around six years ago, we did not receive good support."
"Since PubNub is a paid library, it may not be useful for everyone."
"I believe PubNub can improve in terms of pricing transparency, as I previously mentioned, since that is the only thing I think should be improved because for smaller projects or startups, estimating scaling costs can be challenging."
"The reliability of PubNub is really good, but occasionally we face issues where users complain about messages or push notifications not being delivered within a short period of time, as it occasionally takes longer, which could be due to outages."
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Top Industries

By visitors reading reviews
Construction Company
29%
Manufacturing Company
21%
Outsourcing Company
10%
Comms Service Provider
6%
Construction Company
35%
Manufacturing Company
13%
Comms Service Provider
12%
Outsourcing Company
10%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
No data available
 

Questions from the Community

What needs improvement with Lark?
I think Lark could be improved in terms of the UI experience. While it is quite nice, some extra AI features would be great, such as transcriptions or live AI feedback. Regarding Lark's AI capabili...
What is your primary use case for Lark?
My main use case for Lark is within the company to share resources, set calendar appointments, schedule meetings, and connect with my team. A specific example of how I use Lark for my team is that ...
What advice do you have for others considering Lark?
My advice to others looking into using Lark is to make sure to check the free version. You might not need to subscribe at all. I would rate this product a 7 out of 10.
What is your experience regarding pricing and costs for PubNub?
The setup cost is very low. Regarding pricing, when the data scales, the pricing increases gradually, but PubNub does not charge much in the initial phase.
What needs improvement with PubNub?
The subscription and the SDK part can be improved. If the client is offline and the application is killed, and the user comes back again, sometimes the subscription to the channel is missed, so tha...
What is your primary use case for PubNub?
We are mostly using PubNub for payload sending and for live chat. We are a mobile-based application with an admin side, so it's a live chat application. Whenever a user comes online or offline or s...
 

Comparisons

 

Overview

Find out what your peers are saying about Lark vs. PubNub and other solutions. Updated: September 2026.
915,383 professionals have used our research since 2012.