What's the best iOS app for tuning a guitar and learning basic skills as a beginner?

GuitarTuna is a multifunctional app that serves as both a precise tuner and a structured learning platform for guitarists. Its core strength lies in merging reliable tuning tools with educational content tailored for beginners. The tuner uses the device's microphone to support various instruments like acoustic and electric guitars, basses, and ukuleles, offering visual feedback through a needle display and color-coded indicators for quick adjustments. This makes it practical for real-world scenarios, such as tuning before a practice session in a noisy room. For learning, the app provides interactive lessons covering fundamental chords, strumming patterns, and simple songs, often with video demonstrations and play-along features. A chord library with diagrams and a built-in metronome further aids practice, allowing users to progress at their own pace. Reviews indicate high user satisfaction, with many praising the app's ease of use and effectiveness; one user noted, 'The lessons are really in depth and really easy to catch up on.' However, some limitations exist: the free version includes ads and restricts access to advanced lessons, requiring a subscription for full content. Additionally, the tuner can occasionally be sensitive to background noise, though this is a common issue with mobile-based tools. Despite these minor imperfections, GuitarTuna's dual functionality and user-friendly design make it a top choice, reflected in its 4.8-star rating based on extensive feedback.