Introducing the Circuit Calculator app - a revolutionary tool designed to streamline the electronics design process for engineers. Developed by engineers for engineers, this app offers a wide range of features including 170+ circuits for design, 50+ electronics calculators, and 20+ application notes. With its user-friendly interface and compact size, it is a valuable addition to any engineer’s toolbox. Best of all, it operates without any advertisements or the need for an internet connection. One of the standout features of the Circuit Calculator is its powerful design and functionality. The power circuits module offers a variety of options for designing feedback resistor dividers, input and output filters, Zener diodes, and voltage multipliers. It also includes small-signal analysis and allows for inspection of component current and voltage waveforms. Additionally, it features switching-mode power supply stages such as Buck, Boost, Flyback, and Full-Bridge. The app’s versatility is evident in its multifaceted amplifiers and drivers. The Amplifiers section allows for the design of Inverting, Non-Inverting, Difference, and Instrumentation Amplifiers, as well as Op-Amps and Fully Differential Amplifiers. The Variable Gain Amplifiers add to this variety with single-ended and differential options. On the Drivers end, there are options for single-ended, differential, and balanced designs. With a wide range of mathematical operations, the Circuit Calculator makes complex calculations such as summing and range converting a breeze. It also offers Impedance Converters, Current Sources, and Receivers for current-to-voltage and voltage-to-current conversions. Effective filtering and impedance matching are essential in electronics design, and the Circuit Calculator has got you covered. It offers both active and passive filters, including low-pass, high-pass, band-pass, band-stop, and all-pass. It also includes various topologies such as LC, Diplexer, Triplexer, Multiple Feedback, and Sallen-Key. The Impedance Matching feature provides designs for L-network, PI-network, and T-network. But that’s not all - the app also includes a Logic Solver and an Electronics Toolbox. The Logic Solver helps with problem-solving, while the Electronics Toolbox offers over 50 calculators for tasks such as parallel/series connections, LED resistor calculations, noise calculations, PCB trace temperature, and more. Despite the lack of reviews, do not be discouraged from trying out this nifty tool. It is a testament to users’ preference for using the app rather than writing about it. However, for those still on the fence, the developers offer a demo version. So why not give the Circuit Calculator a try and discover a new world of efficiency and convenience in electronics design.