List of the Top 5 API Security Apps for iPhone in 2025

ImmuniWeb is a global leader in application security, with its headquarters situated in Geneva, Switzerland, and primarily serves clients in sectors such as banking, healthcare, and e-commerce. The ImmuniWeb® AI Platform utilizes cutting-edge AI and Machine Learning technologies to enhance and automate processes related to Attack Surface Management and Dark Web Monitoring, cementing its status as a key player in the Application Penetration Testing industry, as noted in the MarketsandMarkets 2021 report. The company guarantees a contractually binding zero false-positives SLA backed by a money-back assurance, reflecting its commitment to quality and reliability. ImmuniWeb's innovative AI solutions have garnered numerous accolades, including recognition from Gartner as a Cool Vendor and an IDC Innovator, along with winning the “SC Award Europe” in the category of “Best Usage of Machine Learning and AI.” With over 100,000 tests conducted daily, the ImmuniWeb® Community Edition stands as one of the largest application security communities available, offering various free assessments such as the Website Security Test, SSL Security Test, Mobile App Security Test, and Dark Web Exposure Test. Furthermore, ImmuniWeb SA proudly holds both ISO 27001 certification and CREST accreditation, showcasing its dedication to maintaining high standards in security practices. The combination of these certifications and advanced technology positions ImmuniWeb as a reliable partner in the ever-evolving landscape of cybersecurity.

Treblle is a federated API Intelligence platform offering enterprises full API visibility from one integration point. It deploys on-prem or in a private cloud, ensuring enterprise-grade security and compliance. Treblle enables shift-left with API Intelligence, Discovery, Observability, Analytics, Runtime Security, Governance, Developer Portals, and an AI-powered Integration Assistant. Recognized by Gartner over 15 times and awarded for observability, Treblle drives faster innovation while enabling enterprises to maintain full control over their entire API landscape.

Authress provides an efficient Authorization API tailored for your application, as managing authorization can become intricate very quickly. While it may appear straightforward at first glance, numerous underlying complexities can arise, making it an undertaking best not approached alone. Achieving effective authorization is a time-consuming task, with straightforward implementations averaging around 840 hours, and this duration increases significantly with the addition of more features to your application. Your application holds the potential to be your most significant security risk; without proper expertise, it can become vulnerable to malicious threats. Failing to implement robust authorization exposes you to the dangers of user data breaches, regulatory non-compliance, and substantial financial repercussions. Authress offers a secure authorization API, allowing you to avoid the pitfalls of developing your own authorization framework by simply leveraging our comprehensive solution. Designed by developers for developers, it features granular permissions that let you establish multiple levels of access organized by user role, allowing for precise control. Additionally, with seamless identity provider integrations, connecting to any ID provider is as simple as making an API call, ensuring smooth and secure user authentication. This way, you can focus on enhancing your application while leaving the complexities of authorization to us.

AppSecure equips businesses with the foresight and capability to prevent sophisticated cyberattacks from highly skilled adversaries through its innovative security strategies. By pinpointing essential vulnerabilities that could be targeted, our state-of-the-art security solutions guarantee these issues are consistently addressed and resolved. We enhance your overall security framework while scrutinizing concealed weaknesses from the perspective of a potential intruder. Evaluate your security team's readiness, detection proficiency, and response plans against relentless cyber threats that aim at your network's weak points. Our thorough approach emphasizes identifying and correcting major security lapses by meticulously testing your APIs according to OWASP standards, alongside tailored test scenarios designed to prevent future complications. With our pentesting-as-a-service model, we deliver continuous, expert-led security evaluations that not only discover and fix vulnerabilities but also strengthen your website's defenses against the evolving nature of cyber threats, ensuring it stays secure, compliant, and trustworthy. In addition, AppSecure is committed to cultivating a robust security environment that evolves alongside new challenges, fostering not just resilience but also peace of mind for our clients.

Astra is a comprehensive API security testing platform that helps businesses discover, analyze, and secure every API in their network—documented or not. Designed for modern engineering and security teams, it automatically detects Shadow, Zombie, and Orphan APIs to eliminate blind spots across your entire infrastructure. Astra’s continuous discovery engine integrates with AWS, GCP, and on-prem environments to provide full visibility into API traffic, parameters, and data exposure risks. Its Dynamic Application Security Testing (DAST) engine scans APIs for over 10,000 known vulnerabilities, including OWASP Top 10, misconfigurations, and real-world CVEs. Beyond automation, Astra’s manual penetration testing by certified experts (OSCP, CEH, CRTP, PCI, AWS-certified) uncovers complex business logic vulnerabilities that scanners often miss. The Authorization Matrix module allows teams to visualize and correct access control flaws before they turn into breaches. Real-time dashboards and detailed remediation guides make it easy for teams to track progress and strengthen security posture. Astra integrates seamlessly with developer tools such as Postman, Burp Suite, GitHub, and CI/CD pipelines, enabling “shift-left” security across the software lifecycle. Built for scalability, it continuously learns from traffic and code changes to provide incremental testing after every API update. Trusted by over 1,000 engineering teams and top brands worldwide, Astra delivers continuous, agentic, and actionable API protection—helping organizations stay one step ahead of evolving threats.