Bookends vs Decibel

Bookends is the reference management app you've been looking for. The basic version offers: • Search online sites directly (arXiv, Google Books, Google Scholar, JSTOR, the Library of Congress, PubMed, PubMed Central, and Semantic Scholar) or use the built-in browser (EZProxy-compliant) to download reference metadata and PDFs (access privileges required). Searches can return a maximum of 20 references, and only 50 references can be stored in your personal database. • Use unique identifiers such as DOI, PMID, ISBN, or arXiv id to autofill references. • View the text of PDF annotations in a note stream, and create your own with our powerful PDF markup engine. • Barcode scanning, one per day. • And many more features designed to help you discover, organize, and use reference information. Standard, one-time purchase ($14.99): • No limit on searches or importing. Premium, yearly subscription ($14.99). Requires a Standard purchase. • Cloud sync with all your iOS devices and Bookends for Mac (separate purchase). • Share online libraries with colleagues. • Scan documents with Mellel Mobile*. • Create multiple libraries. • Unlimited barcode scanning. • Extract PDF annotations with deep links to annotations and text. • Convenient UI to add PDF notes to the library. • Automate your actions with Shortcuts. * iPad-only. Requires a Mellel Mobile Premium subscription. Subscription is for one year and has an auto-renew option. The subscription can be managed in iOS -> Settings > [your name] > Subscriptions. A subscription will renew if it isn't canceled at least 24 hours before the renewal date. If the subscription is not renewed, Premium will be disabled but Standard will continue to work. Terms of Service: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

The Decibel Meter app is designed for professionals and enthusiasts alike, with features that allow for precise noise measurement across a variety of environments. Equipped with a Frequency Analyzer, this app goes beyond simple decibel readings by offering the ability to measure the intensity of specific frequencies in hertz (Hz), making it an essential tool for tasks like acoustic analysis or environmental noise monitoring. Key Features of the Decibel Meter app include: • Decibel Gauge: A real-time visual representation of noise levels, perfect for quick assessments. • Noise Reference: Instantly displays current noise intensity for immediate feedback. • Min/Avg/Max Values: Shows the minimum, average, and maximum decibel levels during a session, providing comprehensive data. • Frequency Analyzer: Enables the selection of specific frequencies (Hz) for precise dB measurements, ideal for focused sound source analysis. • Graphical Representation: A historical graph tracks decibel levels over time, offering a detailed view of sound fluctuations. Whether you're monitoring a workplace for occupational noise compliance, or conducting an acoustic tuning of musical instruments, this app provides the precision and flexibility needed for all your sound measurement needs. The Frequency Analyzer further enhances this by giving you control over the specific frequencies you wish to analyze, helping you pinpoint noise issues in any environment. By incorporating decibel meter, frequency analysis, and sound level monitoring, this app ensures that users receive the most accurate and tailored sound measurements possible. Auto-Renewable Subscription Terms: - The payment will be charged to your Apple ID Account at confirmation of purchase. - The subscription renews automatically unless the auto-renew is turned off at least 24 hours before the end of the current billing period. - Your account will be charged for renewal within 24 hours before the end of your selected subscription. - Your subscriptions can be managed, and auto-renewal can be turned off by going to your App Store Account Settings. Terms: https://sunshine-dev.com/?page_id=98