67+ iOS apps curated and reviewed
If you already know OSHA Safety Standards, this is the deeper bench. 67+ open standards apps for iPhone, all reviewed and ranked by user rating, recency, and download trend as of June 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free | 4.7★ (31) | No | No | Jul 2026 |
| 2 |  | Free | 4.6★ (3.6K) | Yes | No | Jul 2026 |
| 3 |  | $2.99 | 4.0★ (1) | No | No | May 2026 |
| 4 |  | Free | — | Yes | No | May 2026 |
| 5 |  | Free | 3.4★ (145) | No | No | Jul 2026 |
| 6 |  | Free | 3.4★ (91) | No | No | Jul 2026 |
| 7 |  | Free | 3.6★ (5) | No | No | May 2026 |
| 8 |  | Free | — | No | No | May 2026 |
Access all Occupational Safety and Health Administration (OSHA) standards and regulations instantly from your phone. This app provides comprehensive, free access to the entire OSHA standards library, with full offline functionality and automatic updates.
Tune your 6-string guitar with precise reference notes. Supports standard tuning and more. Ensure your device is not on silent to hear the tuning tones.
Explore the world with over 60 interactive map types, offering diverse styles and up-to-date data. Easily switch between maps while preserving your position and zoom level. Ideal for cartography enthusiasts and anyone interested in varied map representations.
Communicate securely and privately with instant messaging and video calls. This app offers robust features for individuals and communities, allowing you to own your data and choose where it's hosted. Enjoy real-time communication with synchronized history across all your devices.
This application provides an intuitive and precise way to tune your guitar using your device's microphone. It offers visual feedback for accurate tuning and supports a wide range of custom tunings, along with adjustable reference frequencies.
Access Massachusetts curriculum frameworks and explore learning standards. Find resources like student work, assessment items, and definitions. Plan lessons with a mapping feature showing standard relationships.
Access and download NATO Standards directly on your mobile device. Store documents for offline reading. This official app provides a convenient way to manage important standardization information.
Explore public GitHub repositories within any organization. Discover, analyze, and connect with open-source work, filter by language or activity, and view contributor profiles. Ideal for developers, security analysts, and recruiters.
This app provides access to information and resources for professionals in the aerospace, automotive, and commercial-vehicle industries. It focuses on lifelong learning and standards development, supporting educational programs and technical expertise.
Access a vast, daily updated library of over 17,000 technical standards on your mobile device. Features include text-to-speech, annotations, and advanced search capabilities. Standards purchased online are automatically synced.
This app provides a precise and adaptable tuning experience for a wide range of stringed instruments, including guitar, bass, and ukulele. It offers over 100 predefined tunings, capo support, and custom tuning options for personalized sound.
This app provides precise digital tuning for various stringed instruments, including guitars and ukuleles. It offers multiple tuning profiles and an automatic mode for ease of use, ensuring perfect sound for both professionals and hobbyists.
This official companion app serves as a digital meeting place for a professional community. It allows users to join meetings, share updates, ask questions, and stay informed about ongoing activities and research. Mobile access ensures continuous connection and participation from anywhere.
This app provides secure audio and video calls, messaging, and file transfers using the SIP protocol. It supports multiple devices, call recording, and end-to-end encryption for all communications.
This app provides AmRest employees with instant access to operational standards and best practices. It serves as a central knowledge hub, ensuring employees can quickly find and adhere to company guidelines anytime, anywhere.
This tool gathers and organizes publicly available information from open sources. It presents search results like links, articles, and images in a structured card format for easy review and navigation. Save, revisit, and share your organized findings.