207+ iOS apps curated and reviewed
The best ctrials apps on iPhone average 4.4★ across 207+ titles — we've ranked them by what real users actually keep on their phones. Updated June 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free | 3.0★ (3) | No | No | May 2026 |
| 2 |  | Free | 4.8★ (45K) | No | Yes | Jul 2026 |
| 3 |  | Free | 4.5★ (4.3K) | No | Yes | Jul 2026 |
| 4 |  | Free | 4.4★ (17K) | Yes | No | Jul 2026 |
| 5 |  | Free | 4.7★ (130K) | No | No | Jul 2026 |
| 6 |  | Free | 3.3★ (1.1K) | No | No | Jul 2026 |
| 7 |  | Free | 4.5★ (3.7K) | No | Yes | Jul 2026 |
| 8 |  | Free | 4.7★ (60K) | Yes | No | Jun 2026 |
This app provides a mobile interface for searching clinical trials listed on clinicaltrials.gov. It offers user-friendly navigation with basic, advanced, and country-specific search options. Users can save trials to favorites, email listings, and contact investigators.
This encrypted email service from Switzerland prioritizes user privacy with end-to-end encryption. It offers robust security features to protect your communications from phishing, spam, and tracking, allowing you to manage your inbox with ease.
This AI-powered app transforms your email into a messenger-like experience for professionals and teams. It streamlines inbox management with smart summaries, AI-assisted replies, and one-tap actions. Collaborate seamlessly with team chat, shared inboxes, and integrated tools.
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.
Tired of a cluttered inbox? This app helps you easily unsubscribe from unwanted email subscriptions, block spam, and organize your mail. It provides a clear overview of all your subscriptions, allowing you to manage them individually or in bulk.
Access a digital version of your physical mail and packages from anywhere, 24/7. Choose a real street address for business or personal use and manage your mail with options to forward, scan, shred, or discard.
This app helps you declutter your inbox by unsubscribing from unwanted senders, bulk deleting emails, and automating cleanup. It offers features to block senders, get data breach alerts, and organize your mail efficiently. Take control of your inbox and save time daily.
This app consolidates email, calendar, notes, and cloud storage into a single platform. It offers AI-powered email summarization, vacation planning, customizable notifications, and translation features. Manage multiple email accounts and organize newsletters efficiently.
Generate instant disposable temporary email addresses to protect your privacy and avoid spam. Receive, read, and manage incoming messages without registration. Control expiration times and enjoy enhanced security with premium options.
A secure email client for Gmail offering robust protection with Touch/Face ID and passcode. It features customizable message viewing, anti-phishing measures, and in-app browsing. Easily insert text snippets, signatures, and manage attachments.
Manage your emails and cloud storage from a single app. Receive instant notifications for new messages and access your contacts and documents on the go. Secure your account with PIN or biometric authentication.
This app helps you declutter your inbox by deleting unwanted emails and unsubscribing from newsletters with a simple swipe. It organizes your subscriptions, identifies senders filling your inbox, and offers powerful spam protection. Recover accidentally deleted emails and even plant trees by referring friends.
This app allows you to choose which browser opens a web link, bypassing your default settings. Easily select from installed browsers like Chrome, Safari, Firefox, and more to open any web page.
Design, customize, and manage your website, online store, or blog from anywhere. This app provides tools to create professional online presences, manage business aspects, and engage with your audience on the go.
Easily open and view Winmail.dat, MSG, and XPS email files that are incompatible with most email clients. Convert embedded content like appointments and notes into native iOS formats, and access all attachments within these files.
This AI-powered writing assistant helps you craft better emails, letters, and messages. It offers personalized suggestions, proofreading, and grammar checking to enhance your writing speed and efficiency. Ideal for students, professionals, and anyone seeking to improve their communication.
Create and manage multiple disposable email addresses for free. Use them for various purposes without worrying about spam or privacy. Addresses are permanent and can be accessed across devices.
This app offers a fast and private way to manage your inbox. It uses on-device AI to help you clean up thousands of emails, unsubscribe from lists, and organize your communications across multiple accounts. It functions as a full email client with smart notifications.
Turn your iPhone or iPad into a portable fax machine. Send and receive faxes securely from anywhere without needing a physical machine. Offers convenient faxing via the app, website, or email.
This app offers a powerful AI-driven spam filter for iPhone and iPad, protecting your inbox from junk and malicious emails 24/7. It works across all devices and operating systems, ensuring you only receive the emails you want.