Convert Units App is a free app that contains a wide variety of units making it suitable for professional purposes as well as everyday use. You can add units that are not listed for converting. Previous entries can be accessed for future use with options to add amounts to what has been calculated. You can access the website here 11 Best Unit Converter Apps for Android & iOS | Free apps for Android and iOS (freeappsforme.com)
Units – Free Unit Converter is a free app that conveniently presents the units in a scroll and can save your results so you can find what need quickly. It also has a built in ruler for small fast measurements. You can access the app here Units - Free Unit Converter on the App Store (apple.com)
Unit Converter Ultimate is a free app that is very user friendly with fast and simple conversions between units. Available in many languages and a variety of settings including dark or light mode. You can access more information here https://play.google.com/store/apps/details?id=com.physphil.android.unitconverterultimate
Artisan Bread for iPad is a free app for the creative bread maker. The app does not contain recipes but allows the experienced baker to add recipes and edit details such as percentages and hydration rates and store existing recipes as templates for further inspiration. You can access the app here Best Apps for Baking (appadvice.com)
Caking and Baking Recipes is a free app that has thousands of recipes both sweet and savoury which can all be accessed offline with easy to follow step by step instructions. Different categories include Vegetarian and Vegan, as well as Courses, Ingredients, and Cuisines. More information is available here Caking and Baking Recipes by Edutainment Ventures LLC (appadvice.com)
Pie Recipes is a free app with simple healthy options that are inexpensive and easy to follow recipes. Hundreds of video recipes are also available. You can access the app here Pie Recipes, Cake Recipes, Baking & Cooking Videos on the App Store (apple.com)
