Learn music theory with interactive challenges and comprehensive reference materials for piano and guitar. Test your knowledge of chords, scales, and progressions through engaging exercises and easily accessible diagrams.






250+ iOS apps curated and reviewed
Finding the right duncan gillespie apps can be overwhelming with so many options. We've analyzed 250+ apps to bring you the best choices for 2026, from free options to premium solutions with advanced features.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 | Free | 5.0★ (12) | No | No | May 2026 | |
| 2 | Free | 3.9★ (19) | No | Yes | May 2026 | |
| 3 | Free | 4.5★ (8) | No | Yes | Sep 2026 | |
| 4 | Free | 4.0★ (3) | No | No | May 2026 | |
| 5 | Free | 4.6★ (29K) | No | No | Sep 2026 | |
| 6 | Free | 4.9★ (44) | No | No | Aug 2026 | |
| 7 | Free | 5.0★ (1) | No | No | May 2026 | |
| 8 | Free | 4.9★ (102) | No | No | Jul 2026 |






Learn music theory with interactive challenges and comprehensive reference materials for piano and guitar. Test your knowledge of chords, scales, and progressions through engaging exercises and easily accessible diagrams.






This app provides guitarists with an extensive reference for chords and scales. Explore thousands of diagrams, hear chords strummed, and sound out individual notes within scales. It offers various fingerings and fretboard views, with all content accessible offline.





This app helps you understand your biological age and create a personalized longevity plan. It uses AI and clinical science to offer actionable health insights, optimizing sleep, metabolism, and stress.


Empower communities to collect and analyze local environmental data. Share findings with decision-makers to advocate for changes that promote health equity.


Earn rewards for healthy actions like walking and exercising. Contribute to medical research by securely sharing your health data. Track your progress and sync with popular fitness apps and wearables.


This app analyzes your health data to provide personalized wellness recommendations backed by evidence. It offers a custom plan designed around your body's unique needs, complementing professional healthcare advice.


This app offers practical tools to enhance health and quality of life, combatting stress. It includes health news, a scientifically evaluated self-help system, and work environment surveys for individuals and organizations.


This app provides a safe, moderated online community for women to discuss intimate health and wellness. It offers curated forums, expert-led virtual classes, and a community calendar for accessible support and education.


This app empowers individuals to discover which alternative medicines work best for them through active and passive data collection. It supports research into cannabinoids, psychedelics, supplements, and more, making clinical evidence generation easier and more affordable.


This app helps you understand and improve your biological age through lifestyle changes. It provides a biological age assessment and daily actions to boost your lifestyle score, aiming to make you biologically younger for a longer, healthier life.


Connect with a supportive community for various medical conditions. Find answers, share experiences, and access resources for treatment information and clinical trials. Your health journey is easier with others who understand.


This app offers personalized health management support, including appointment reminders, resource finding, wellness activities, and educational content. It provides access to a compassionate support team and an AI-powered digital navigator for anytime assistance.








This application serves as a leadership summit for professionals within a specific organization. It facilitates education, networking, and celebration among leaders nationwide.


This app rewards users for tracking their health vitals, symptoms, and lifestyle choices. Earn coins for monitoring your health, managing conditions, and engaging with wellness content, redeemable for prizes or charity donations.


This official application serves as a central hub for AcademyHealth events. It provides resources and information for professionals in health services research, policy, and practice. Enhance your understanding of research methods and data, and expand your professional network.


This app offers science-backed education and coaching for personal reinvention through behavior change. Connect with a global community of self-help enthusiasts and access exclusive content from the founder, all from your mobile device.


Share your opinions on cultural trends and gain insights into what's emerging. Participate in short surveys and get rewarded for your valuable input.