Best Simplex Apps

76+ iOS apps curated and reviewed

4.1 avg rating
19 free apps
Updated May 2026

The best simplex apps on iPhone average 4.1★ across 76+ titles — we've ranked them by what real users actually keep on their phones. Updated May 2026.

Top Picks for Simplex

SimpleX Chat: secure messenger#1

SimpleX Chat: secure messenger by SimpleX Chat Ltd

Privacy redefined: no user IDs
Editor's Choice
🌐 Social Networking
4.3😐(248 ratings)
Free
SimpleX Chat: secure messenger screenshot 1
SimpleX Chat: secure messenger screenshot 2
SimpleX Chat: secure messenger screenshot 3
SimpleX Chat: secure messenger screenshot 4
SimpleX Chat: secure messenger screenshot 5
SimpleX Chat: secure messenger screenshot 6

This application is a secure messenger that prioritizes privacy without using any user identifiers, ensuring complete anonymity. It offers end-to-end encryption, disappearing messages, secure group chats, and various privacy features. Connect with others easily via link or QR code, eliminating the need for emails or phone numbers.

What We Love

  • 🔒 End-to-end encryption and quantum-resistant security
  • 🔐 No phone number or personal data required
  • 👤 Anonymous profiles and multiple identities
  • 🚀 Fast message delivery when working properly

Room to Improve

  • 🐛 Frequent app crashes and instability
  • 📬 Delayed or missing notifications (20+ minutes common)
  • ⌨️ Keyboard issues on iOS (freezing, unresponsive)
Session - Private Messenger#2

Session - Private Messenger by Rangeproof PTY LTD

Privacy you can trust
Strong Contender
🌐 Social Networking
4.2😐(3.4K ratings)
Free
Session - Private Messenger screenshot 1
Session - Private Messenger screenshot 2
Session - Private Messenger screenshot 3
Session - Private Messenger screenshot 4
Session - Private Messenger screenshot 5
Session - Private Messenger screenshot 6

Session is a private messenger that ensures anonymity by utilizing a decentralized server network, avoiding data breaches and metadata logging. With features like closed groups, secure attachments, and open-source code, Session prioritizes user privacy and security. Join Session to protect your online conversations today! Check out Session on GitHub for more information: https://github.com/loki-project/session-ios.

What We Love

  • 🔒 Secure and private messaging
  • 👍 Clean and intuitive user interface
  • 🚀 Fast and responsive
  • 🔒 No phone number or personal data required

Room to Improve

  • 🐛 Unreliable notifications and message delivery
  • 🐛 Frequent crashes and bugs
  • 🐛 Slow media file transfers
Signal - Private Messenger#3

Signal - Private Messenger by Signal Messenger, LLC

Wir leben Datenschutz.
Worth Considering
🌐 Social Networking
4.7😊(1M ratings)
FreeIn-App Purchases
#11in Social Networking
Signal - Private Messenger screenshot 1
Signal - Private Messenger screenshot 2
Signal - Private Messenger screenshot 3
Signal - Private Messenger screenshot 4
Signal - Private Messenger screenshot 5
Signal - Private Messenger screenshot 6

A messaging app focused on privacy with end-to-end encryption for texts, voice and video calls. Features group chats for up to 1,000 people, disappearing Stories, and no data collection. Stay connected securely with Signal - Private Messenger.

What We Love

  • 🔒 Security and privacy
  • 👍 Ease of use
  • 🚀 Great call quality
  • 🚀 Smooth and pleasant user interface

Room to Improve

  • 🐛 Delayed message delivery
  • 🐛 Inconsistent image/video quality
  • 🐛 Buggy call functionality

More Simplex apps to explore

4
Changelly Exchange・Buy Crypto
Changelly Exchange・Buy Crypto
Changelly Exchange・Buy Crypto
Bitcoin BTC・USDT・Litecoin・ETH
Free

An intuitive platform for fast crypto exchanges with over 500 cryptocurrencies, offering secure transactions, competitive rates, and 24/7 support. Buy, sell, or exchange Bitcoin, Ethereum, and a variety of altcoins with ease. Visit the website to explore more: [Changelly Exchange](https://changelly.com/) 🚀

💰 Finance
(6.2K)
5
Simplex ELD 2GO
Simplex ELD 2GO
Simplex ELD 2GO
by The Simplex Group Inc
Free

This application automatically tracks driving time, engine data, and vehicle location for commercial vehicles, providing a customized solution to help fleets meet and exceed regulation standards. It offers flexible options to maximize hours of service or ensure compliance, making it an intuitive tool for fleet management.

💼 Business
(10)
6
Simplex Health
Simplex Health
Simplex Health
by Simplex Health Corp
Free

This application offers insurance-funded, medically supervised nutrition therapy services, connecting users with registered dietitians and care teams to reverse and prevent chronic disease. Through the app, users can access personalized support, track their health metrics, and receive customized meal and workout plans to achieve their health goals.

💪 Health & Fitness
(4)
7
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)
8
Simplex
Simplex
Simplex
by Aptare Tecnologia
Free

Este aplicativo oferece uma conta digital inovadora com descontos em estabelecimentos credenciados, carteira digital para transferências e saques, controle de contas a receber e pagar, pagamento de contas com cartão de crédito e recarga de celular. Baixe e experimente uma nova forma de gerenciar suas finanças!

💼 Business
(5)
9
Simplex Insurance Online
Simplex Insurance Online
Simplex Insurance Online
by The Simplex Group Inc
Free
💼 Business
(0)
10
Symlex VPN: Safe & Fastest VPN
Symlex VPN: Safe & Fastest VPN
Symlex VPN: Safe & Fastest VPN
Fast Super VPN & Hotspot Proxy
Free

Symlex VPN provides unlimited, fast, and secure VPN services to protect your online privacy and access restricted content. Stay anonymous and browse securely with Symlex VPN.

📊 Productivity
(1.3K)
11
ChatSecure Messenger
ChatSecure Messenger
ChatSecure Messenger
Encrypted Messenger
Free

An encrypted messenger app that prioritizes user privacy through OTR and OMEMO encryption protocols over XMPP. Stay secure with open source cryptographic libraries and support ongoing development through subscriptions. Check it out now for secure messaging!

🌐 Social Networking
(283)
12
WhatsApp Messenger
WhatsApp Messenger
WhatsApp Messenger
Simple. Reliable. Private.
Free

A popular messaging and video calling app used by over 2 billion people worldwide, offering private, encrypted communication with group chats, voice and video calls, and real-time sharing features. Stay connected with friends and family easily. For more information or support, visit Settings > Help > Contact Us within the app.

🌐 Social Networking
(18M)
13
LBank - Buy Bitcoin & Crypto
LBank - Buy Bitcoin & Crypto
LBank - Buy Bitcoin & Crypto
Buy Meme on LBank
Free

Discover a user-friendly platform for buying and selling Bitcoin easily. Trade securely, track market trends, and manage your investments with our intuitive app. Join now to start your cryptocurrency journey!

💰 Finance
(707)
14
SimpleX Flash
SimpleX Flash
SimpleX Flash
Insights in hand
Free
💼 Business
(0)
15
SimpleX Go
SimpleX Go
SimpleX Go
by SIMPLEX TECHNOLOGY SOLUTIONS PTY LTD
Free
💼 Business
(0)
16
Simplex
Simplex
Simplex
by ACRI
Free
🔧 Utilities
(0)
17
SimpleX Maintec
SimpleX Maintec
SimpleX Maintec
by SIMPLEX TECHNOLOGY SOLUTIONS PTY LTD
Free
💼 Business
(0)
18
SimplexLP
SimplexLP
SimplexLP
Linear optimization made easy!
$3.99

This application solves linear optimization problems using the Simplex algorithm, allowing users to easily set up and solve maximization and minimization problems with multiple variables and constraints. It's a perfect learning tool for teachers and students to understand linear optimization concepts and visualize problems with a graphical representation.

📚 Education
(1)
19
Simplex Nodal
Simplex Nodal
Simplex Nodal
by Simplex Nodal Limited
Free

Learn about electricity markets by building and solving your own models using this interactive app, and gain insight into the internal workings of the simplex algorithm that powers them. Explore features such as locational marginal pricing, line losses, and congestion charges, and start with small models to master the basics of electricity market modeling.

📚 Education
(0)
20
Keet - Private Encrypted Chat
Keet - Private Encrypted Chat
Keet - Private Encrypted Chat
Secure Messenger, No Tracking
Free

Chat directly with friends, share messages, files, and high-quality videos effortlessly! Stay connected in real-time with Keet by Holepunch.

🌐 Social Networking
(103)

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