Best Microsoft Office 365 Outlook Apps

245+ iOS apps curated and reviewed

4.6 avg rating
18 free apps
Updated August 2026

With an average user rating of 4.6★, the microsoft office 365 outlook category is one of the App Store's strongest. Browse all 245+ apps we track, sorted so the most loved ones surface first.

Compare top Microsoft Office 365 Outlook Apps (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Microsoft OutlookMicrosoft OutlookFree4.8★ (9.2M)YesYesAug 2026
2Microsoft CopilotMicrosoft CopilotFree4.7★ (1.3M)YesYesAug 2026
3Microsoft OneDriveMicrosoft OneDriveFree4.7★ (487K)NoYesAug 2026
4MailMailFree4.7★ (4M)NoNoAug 2026
5Email for Hotmail, OutlookEmail for Hotmail, OutlookFree4.0★ (2K)NoYesAug 2026
6Microsoft ExcelMicrosoft ExcelFree4.8★ (1.4M)NoYesAug 2026
7Microsoft 365 AdminMicrosoft 365 AdminFree4.6★ (5.8K)NoNoAug 2026
8Microsoft WordMicrosoft WordFree4.7★ (2.9M)NoYesAug 2026

Top Picks for Microsoft Office 365 Outlook

Microsoft Outlook#1

Microsoft Outlook by Microsoft Corporation

Secure Email, Calendar & Files
Editor's Choice
📊 Productivity
4.8😐(9.2M ratings)
FreeAdsIn-App Purchases
#8in Productivity
Microsoft Outlook screenshot 1
Microsoft Outlook screenshot 2
Microsoft Outlook screenshot 3
Microsoft Outlook screenshot 4
Microsoft Outlook screenshot 5
Microsoft Outlook screenshot 6

Consolidate all your email accounts and calendars into one streamlined application. Manage your inbox, schedule meetings, and access files from various cloud services. Enhance productivity with AI-powered writing assistance and smart inbox features.

What We Love

  • 🚀 Great for corporate email
  • 👍 Customizable and user-friendly
  • 🚀 Seamless integration with Microsoft 365
  • 👍 Solid email and calendar functionality

Room to Improve

  • 🐛 Buggy and unstable at times
  • 🔋 High battery consumption
  • 🔒 Security issues with password resets
Microsoft Copilot#2

Microsoft Copilot by Microsoft Corporation

AI-powered productivity
Strong Contender
📊 Productivity
4.7😐(1.3M ratings)
FreeAdsIn-App Purchases
#23in Productivity
Microsoft Copilot screenshot 1
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Microsoft Copilot screenshot 6

This AI-powered app helps you be more productive at work. Chat with an AI assistant to create content, manage projects, find files, and learn new concepts. It offers voice interaction and expert insights for various tasks.

What We Love

  • 🚀 Seamless integration of Office apps
  • 🔒 Secure cloud storage with OneDrive
  • 👍 Convenient all-in-one productivity solution
  • 🚀 Great for on-the-go work and collaboration

Room to Improve

  • 🐛 Inconsistent file saving and syncing
  • 🔍 Confusing file management and navigation
  • 🔍 Limited functionality compared to desktop Office
Microsoft OneDrive#3

Microsoft OneDrive by Microsoft Corporation

File & photo cloud storage
Worth Considering
📊 Productivity
4.7😐(487K ratings)
FreeIn-App Purchases
#17in Productivity
Microsoft OneDrive screenshot 1
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Microsoft OneDrive screenshot 6

Securely store, back up, and sync your photos, videos, and files across all your devices. Share content with others, scan documents, and access files offline. Offers free storage with options to upgrade for more space and premium features.

What We Love

  • 🚀 Seamless syncing across devices
  • 💡 Useful for storing and accessing files
  • 🔒 Secure cloud storage
  • 👍 Great integration with Microsoft Office

Room to Improve

  • 🐛 Unreliable app performance
  • 🐛 Issues with photo/video uploads
  • 🐛 Buggy PDF annotation tools

More Microsoft Office 365 Outlook apps to explore

4
Mail
Mail
Mail
by Apple
Free

Consolidate all your email accounts into a single, organized inbox. Prioritize important messages, quickly respond with smart replies, and manage your inbox efficiently with features like scheduling and snoozing. Enjoy enhanced privacy with IP address hiding and read receipt prevention.

Unified inbox for multiple accountsAutomatic message categorizationPriority Messages and summarization
📊 Productivity
(4M)
free
5
Email for Hotmail, Outlook
Email for Hotmail, Outlook
Email for Hotmail, Outlook
Support Outlook, Hotmail
Free

Manage your Hotmail, Outlook, Live, and MSN email accounts with a fast, secure, and intuitive app. It offers unified inbox management, push notifications, advanced search, and secure sign-in options for a seamless email experience.

Unified inbox for multiple accountsFast and secure sign-inPush notifications for new emails
🔧 Utilities
(2K)
free with in-app purchases
6
Microsoft Excel
Microsoft Excel
Microsoft Excel
Organize Your Data and Budget
Free

This powerful productivity app allows you to create, view, and edit spreadsheets on the go. Manage data, perform calculations, and analyze information with robust formatting and charting tools. Share your work easily with others.

Create, view, and edit spreadsheetsData analysis with charts and graphsBudgeting and accounting tools
📊 Productivity
(1.4M)
free with in-app purchases
7
Microsoft 365 Admin
Microsoft 365 Admin
Microsoft 365 Admin
by Microsoft Corporation
Free

Manage your Microsoft 365 or Office 365 business subscription from your mobile device. Add users, reset passwords, manage devices, and monitor service health. Stay informed with critical notifications and support requests on the go.

Manage users and groupsReset passwordsManage devices
📊 Productivity
(5.8K)
free
8
Microsoft Word
Microsoft Word
Microsoft Word
Create a Resume, Essay or PDF
Free

Create, edit, and share documents on your mobile device. This powerful word processor offers templates, formatting tools, and collaborative features to help you write impactful text documents, resumes, and more. Your office moves with you, allowing for seamless editing and sharing from anywhere.

Create and edit documentsModern templatesRich formatting and layout options
📊 Productivity
(2.9M)
free with in-app purchases
9
Google Slides
Google Slides
Google Slides
by Google
Free

Create, edit, and collaborate on presentations from any device. Work offline, add rich media, and present directly from your phone or tablet. Seamlessly integrate with video calls and other productivity tools.

Create and edit presentationsReal-time collaborationOffline access
📊 Productivity
(407K)
free
10
Microsoft SharePoint
Microsoft SharePoint
Microsoft SharePoint
by Microsoft Corporation
Free

Access organizational files, news, and colleagues on the go. This app uses AI to personalize your experience, helping you find expertise and content quickly. Stay connected with your team and collaborate effectively from anywhere.

Personalized file and news discoveryAI-powered search for content and expertiseAccess team and communication sites
📊 Productivity
(139K)
free
11
Mail App for Outlook 365
Mail App for Outlook 365
Mail App for Outlook 365
Exchange express office email
Free

Manage your office email efficiently with instant search, an intelligent inbox that prioritizes important messages, and quick filing options. This app supports Exchange and IMAP accounts, offering a streamlined experience for professionals.

Instant email searchIntelligent inbox prioritizationQuick mail filing
📊 Productivity
(6)
free with in-app purchases
12
Microsoft Teams
Microsoft Teams
Microsoft Teams
Call. Chat. Collaborate
Free

This app brings people together for community activities or work projects. It offers integrated chat, events, meetings, storage, and task management. Connect, collaborate, and get things done securely in one place.

Community and team organization1-on-1 and group chatSecure audio and video calls
💼 Business
(3.4M)
free
13
Flash Expense
Flash Expense
Flash Expense
by Flash Pagamentos Beneficios e Vales
Free

Manage corporate expenses with a digital platform that streamlines reimbursement processes. This app eliminates paperwork, provides optimized spending insights, and digitizes receipts. Empower your finance department with better control and offer employees a hassle-free way to handle expenses.

Expense report approvalPolicy violation alertsERP integration
💰 Finance
(4)
free
14
myMail box: email client app
myMail box: email client app
myMail box: email client app
E-mail for Gmail, Hotmail, AOL
Free

Consolidate and manage multiple email accounts from various providers in a single, user-friendly interface. Enjoy customizable notifications, enhanced security features, and efficient search capabilities to streamline your communication.

Unified inbox for multiple email accountsCustomizable push notificationsEmail thread view
📊 Productivity
(18K)
free with in-app purchases
15
Documents (Office Docs)
Documents (Office Docs)
Documents (Office Docs)
Edit, Browse and Manage Files
Free

This mobile office suite allows users to edit and manage spreadsheet and rich text files on their iPhone and iPad. It offers online and offline functionality, synchronization with cloud storage services, and compatibility with major office suites.

Edit spreadsheet and rich text filesOnline and offline functionalitySynchronize with Google Drive, Dropbox, Box, SkyDrive
💼 Business
(43K)
free with in-app purchases
16
Quip - Docs, Chat, Sheets
Quip - Docs, Chat, Sheets
Quip - Docs, Chat, Sheets
by Quip
Free

This app combines chat, documents, slides, and spreadsheets into a single platform for seamless team collaboration. It streamlines workflows by reducing the need for emails and meetings, allowing teams to work faster and more efficiently across all their devices.

Living documentsIntegrated chat and messagingFull-featured spreadsheets
📊 Productivity
(26K)
free
17
Mail+ for Outlook
Mail+ for Outlook
Mail+ for Outlook
by MAIL PLUS APP LLC
$4.99

Access Outlook email and calendar securely on your iOS device. Manage work and personal accounts separately with tools designed for mobile business users, including rich text editing and scheduling assistance. Supports various Exchange versions and popular email services.

Secure Outlook email accessCalendar event managementRich HTML text editing
💼 Business
(840)
free with in-app purchases
18
Microsoft Planner
Microsoft Planner
Microsoft Planner
by Microsoft Corporation
Free

Organize teamwork visually with a simple, interactive board. Assign tasks, track progress, and collaborate with your team through integrated conversations and file sharing. Stay updated on all your tasks across different plans and devices.

Visual task boardsTask assignment and trackingTeam collaboration and chat
📊 Productivity
(13K)
free
19
Google Docs
Google Docs
Google Docs
Edit Documents and Collaborate
Free

Create, edit, and collaborate on documents online in real time. Work together seamlessly with your team, even offline, and access a variety of file types. AI-powered features can help draft and refine content.

Real-time collaborationOffline editingTemplate library
📊 Productivity
(3.2M)
freemium
20
Docs² | for Microsoft Office
Docs² | for Microsoft Office
Docs² | for Microsoft Office
Word, Excel & PowerPoint docs
$9.99

This app helps you create, edit, and manage Microsoft Office documents on the go. It offers video guides, templates, and a document browser for efficient workflow. Secure your files and sync them across devices for seamless productivity.

Create Word, Excel, PowerPoint documentsEdit and share documents onlineAccess free document templates
💼 Business
(688)
free

FAQ about Microsoft Office 365 Outlook

What are the best microsoft office 365 outlook apps for iPhone?
Microsoft Outlook tops our microsoft office 365 outlook apps ranking as of August 2026, with a 4.8-star average from 9.2M App Store ratings, and it's free to download.
Yes — 18 of the top microsoft office 365 outlook apps we rank are free to download, including Microsoft Outlook and Microsoft Copilot.
Microsoft Outlook shows ads and offers in-app purchases, according to its App Store listing as of August 2026.
We track 245+ microsoft office 365 outlook apps on the iOS App Store as of August 2026, ranked by rating, recency, and analysis of real user reviews.
This application consolidates all your email accounts and calendars into a single, convenient location. It helps you manage your inbox, schedule meetings, and access files from various cloud storage services. The app also offers AI-powered features to enhance productivity, such as summarizing long email threads and assisting with writing.
Key features include a smart inbox that sorts messages, quick swipe actions for managing emails, easy sharing of meeting availability, and the ability to find contacts and trips. You can also view and attach files from services like OneDrive and Dropbox without downloading them, and edit Office documents directly within the app.