Best Client Communication Tool Apps

195+ iOS apps curated and reviewed

4.2 avg rating
20 free apps
Updated June 2026

Slack is the household name in client communication tool, but it's far from the only option. We track 195+ alternatives and competitors on iOS β€” many free, many higher-rated than you'd expect.

Top Picks for Client Communication Tool

Slack#1

Slack by SLACK TECHNOLOGIES L.L.C.

Business Communication
Editor's Choice
πŸ’Ό Business
4.1😊(47K ratings)
FreeAds
#19in Business
Slack screenshot 1
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"Improve team communication and collaboration with our app, connecting you to the right people, conversations, and tools to streamline your work. Organize discussions, share documents, integrate with other services, and boost productivity. Try it out today for a simpler and more pleasant working experience!"

What We Love

  • πŸš€ Excellent communication tool
  • πŸ‘ Intuitive interface
  • πŸ”’ Secure and reliable
  • πŸ’‘ Helpful integrations and features

Room to Improve

  • πŸ› Inconsistent notifications
  • πŸ” Cluttered and confusing UI
  • πŸ”‹ High battery consumption
Pronto Team Communication#2

Pronto Team Communication by Hit Labs, Inc.

Group Text & Video Chat
Strong Contender
πŸ“š Education
4.9😊(20K ratings)
Free
Pronto Team Communication screenshot 1
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Pronto Team Communication screenshot 6

Stay connected with your team seamlessly through instant group text messaging. Enhance communication, collaboration, and productivity with Pronto Team Communication. Sign up now!

What We Love

  • πŸš€ Efficient communication
  • πŸ‘ User-friendly interface
  • πŸ”’ Private and secure
  • πŸ’‘ Helpful for school/work

Room to Improve

  • πŸ› Crashes and glitches
  • πŸ” Lacking search functionality
  • πŸ–₯️ No desktop version
Zoho Cliq - Team Communication#3

Zoho Cliq - Team Communication by Zoho Corporation

Team Chat Collaboration App
Worth Considering
πŸ“Š Productivity
4.8😐(5.6K ratings)
Free
Zoho Cliq - Team Communication screenshot 1
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Zoho Cliq - Team Communication screenshot 6

An all-in-one team collaboration app for optimized communication. Features include channels, commands, bots, voice/video calling, file sharing, and seamless connectivity. Customize your chat experience and simplify task automation.

What We Love

  • πŸš€ Fast and efficient
  • πŸ’‘ Effective work communication tool
  • πŸ‘ Seamless integration with Zoho suite
  • πŸš€ Smooth call handoff

Room to Improve

  • πŸ› Frequent crashes and glitches
  • πŸ› Unreliable notifications
  • πŸ‘Ž Confusing UI and navigation

More Client Communication Tool apps to explore

4
Clio for Clients
Clio for Clients
Clio for Clients
Stay connected to your lawyer.
Free

Stay connected to your lawyer with an app that lets you securely communicate, share documents, receive updates, and access case information from a centralized portal. Send documents, communicate privately, stay organized, pay invoices, and more. Your lawyer must be using the app to grant you access.

πŸ“Š Productivity
(11K)
5
Rocket.Chat
Rocket.Chat
Rocket.Chat
The Secure CommsOSβ„’
Free

Rocket.Chat is a customizable open-source chat platform for secure real-time communication across devices, offering features like audio/video conferencing, guest access, and encryption. Join a thriving community and boost productivity with Rocket.Chat!

πŸ’Ό Business
(3.7K)
6
Flock: Team Communication App
Flock: Team Communication App
Flock: Team Communication App
by Flock FZ-LLC
Free

This team communication app brings all your work into one place, allowing you to discuss ideas, share information, assign tasks, and track progress with your team. With features like messaging, video calls, file sharing, and productivity tools, it helps teams of all sizes communicate and collaborate effectively, and it's free to use with optional paid upgrades.

πŸ’Ό Business
(100)
7
Pumble
Pumble
Pumble
Business Communication
Free

A free business messaging app for effective work communication: send direct/group messages, create public/private channels, host meetings, access message history, unlimited user invites, send audio/video messages, and share files/links across all devices. Explore more at https://pumble.com.

πŸ’Ό Business
(1.4K)
8
RedeApp: Work + Communities
RedeApp: Work + Communities
RedeApp: Work + Communities
by Red e App, Inc
Free

This mobile platform provides professional-grade messaging and collaboration tools for organizations of any size, offering a secure space for teams to communicate and access essential tools. With various plans, including free and paid options, it enables users to streamline communication, enhance operational efficiency, and maintain compliance with industry standards.

πŸ’Ό Business
(93)
9
Clients: Your Client Book, CRM
Clients: Your Client Book, CRM
Clients: Your Client Book, CRM
Manage Your Customer Database
Free

Effortlessly store and manage client data with this simple and efficient personal CRM app. Stay connected with your clients, take notes, import contacts, set reminders, and more from anywhere. Visit the website to learn more: https://clients.is/terms/

πŸ’Ό Business
(398)
10
Fuze Mobile
Fuze Mobile
Fuze Mobile
Calling, Meetings, Messaging
Free

Power every business conversation on the go with a comprehensive mobile application offering voice calling, video meetings, messaging, and more. Stay seamlessly connected with colleagues and clients through a variety of communication features. Subscribe now for enhanced collaboration capabilities.

πŸ’Ό Business
(4K)
11
Whalek
Whalek
Whalek
Enterprise communication tool
Free

Whalek is an enterprise communication and collaboration tool with features like efficient instant messaging, voice/video calls, file sharing, and to-do/calendar functionalities for seamless work management. Stay connected, organized, and productive with Whalek.

🌐 Social Networking
(245)
12
PinChat Client
PinChat Client
PinChat Client
Simple Chat Tool for Business
Free
πŸ”§ Utilities
(0)
13
Tato Talk
Tato Talk
Tato Talk
Chat smarter, Connect closer
Free
🌐 Social Networking
(41)
14
Convo – Team collaboration
Convo – Team collaboration
Convo – Team collaboration
by Convo Corp
Free

This business collaboration tool helps fast-moving teams share, organize, and archive information securely, facilitating real-time messaging, file discussion, and feedback. It enables teams to centralize their work, make quick decisions, and stay secure with top-notch encryption.

πŸ’Ό Business
(337)
15
Karbon for Clients
Karbon for Clients
Karbon for Clients
Accounting firm client portal
Free

This client portal app allows you to securely share files, exchange information, and stay connected with your accounting firm in one place, streamlining communication and task management. By using this app, you can easily collaborate, track project progress, and ask questions, reducing back-and-forth and keeping your information safe with industry-standard security.

πŸ“Š Productivity
(3)
16
JANDI: Team Collaboration Tool
JANDI: Team Collaboration Tool
JANDI: Team Collaboration Tool
Easiest Collaboration Platform
Free

This team collaboration platform enables instant communication, file sharing, task management, and video conferencing, helping teams work together more efficiently. With features like smart search, cloud storage, and integrations with popular tools, it streamlines workflow and facilitates a productive collaboration culture.

πŸ’Ό Business
(21)
17
Telegram Messenger
Telegram Messenger
Telegram Messenger
Fast. Secure. Powerful.
Free

A fast, secure, and powerful instant messaging app with global connectivity and seamless cross-device syncing. Enjoy unlimited media and file sharing with top-tier encryption for maximum security.

🌐 Social Networking
(270K)
18
Logics Client Portal
Logics Client Portal
Logics Client Portal
by Intellirose LLC
Free

This client portal app provides a comprehensive solution for managing cases, activities, and finances in one centralized platform, offering features such as case tracking, billing summary, payment management, and live chat support. Download the app to streamline your interactions, stay informed, and take control of your client management experience.

πŸ“Š Productivity
(41)
19
Customer List: Client Records
Customer List: Client Records
Customer List: Client Records
Customer Database, Client list
Free

This customer management system helps you organize client records, tasks, and notes, ensuring exceptional service and business growth. Try it for free to build better relationships with your customers, stay organized, and provide better services with features like client planning, time tracking, and contact management.

πŸ’Ό Business
(4)
20
Client Note Tracker - Easy CRM
Client Note Tracker - Easy CRM
Client Note Tracker - Easy CRM
Customers, Records, Journal
Free

Remember client interactions with ease using this app that allows you to track client details and notes, with the ability to add custom information for each client. Access your data across multiple devices and enjoy a simple, ad-free interface. Perfect for professionals in various industries and small business owners. Download now to stay organized!

πŸ’Ό Business
(90)