CircuitWay vs Singular

CircuitWay is a SPICE simulator of analog and digital circuits. It can easily design, simulate, and analyze electronic circuits on your device. There’re 100 example circuits for your convenience to explore. They range from basic BJT amplifiers, to MOS amplifiers, to oscillators, to filters, to PMICs, to 555 timers, to switched capacitor circuits, to high frequency circuits, to basic digital circuits, and finally 10 complex projects. The 10 complex projects consist of: UART, RISC CPU, PLL, Clock and Data Recovery (CDR), SRAM, R-2R Ladder DAC, Σ-Δ ADC, SAR ADC, FIR Filter, IIR Filter. There’re 106 type of library elements in the CircuitWay, range from resistor, capacitor, inductor, to sin, pulse, pwl voltage source, to controlled source such as: VCVC, VCCS, CCVS, CCCS, to behavior voltage source, to switches, to opamps, to tranformers, to Verilog code, to standard digital cells, to ADC/DAC, to 555 chip, to Arduino and more. Because CircuitWay supports Verilog, so you can build indefinitely any number of digital circuits using Verilog hardware design language. CircuitWay can also support Arduino, so you can use c language to model a large number of complex systems. CircuitWay supports 4 type of analysis: Transient, DC sweep, AC, FFT. You can manipulate and inspect waveforms in the schematic page, and build waveform math expressions to calculate new waveforms from exist waveforms. CircuitWay is serious about helping you to understand more about circuits. If you find and want to report bugs, you can contact dianlutu9988@gmail.com or circuitway@126.com Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Singular is a professional-grade analog & logic circuit simulator designed for your iPhone and iPad. Build, simulate, and analyze electronic circuits with an intuitive drag-and-drop editor and a powerful real-time simulation engine — no internet required. Whether you're an electrical engineering student studying for exams, a maker prototyping your next project, or a professional verifying a design, Singular gives you a complete electronics workbench in your pocket. POWERFUL SIMULATION ENGINE • Modified Nodal Analysis (MNA) with TR-BDF2 adaptive solver • Real-time transient, DC, and AC analysis • Frequency-aware adaptive timestep — accurate results at any speed • Newton-Raphson nonlinear convergence for semiconductors • Hot-swap: modify your circuit while simulation is running 40+ ELECTRONIC COMPONENTS Passive — Resistor, Capacitor, Inductor, Potentiometer Sources — DC Voltage, AC Voltage, Pulse Generator Diodes — Standard Diode, Ideal Diode, LED Transistors — NPN, PNP, Darlington PNP, N-MOSFET, P-MOSFET Integrated Circuits — NE555 Timer, Operational Amplifier (Op-Amp) Logic Gates — AND, OR, NAND, NOR, XOR, XNOR, Inverter, Buffer Flip-Flops — D, JK, T Flip-Flop, SR Latch Measurement — Voltmeter, Ammeter Power Rails — Ground, VCC, VDD, VSS, VEE, ±3.3V, ±5V REAL-TIME OSCILLOSCOPE • Multi-trace display with color-coded signals • Adjustable time base and voltage scale • Pinch-to-zoom and pan gestures • 60 fps rendering — smooth and responsive INTUITIVE CIRCUIT EDITOR • Drag-and-drop component placement with grid snapping • Draw wires by tapping terminals — automatic routing • Rotate, flip, and mirror components freely • Multi-select, move, and organize your design • Full undo/redo history (up to 100 steps) • Pinch zoom (0.1x–5x) and two-finger pan PROFESSIONAL TOOLS • Design Explorer with automatic reference designators (R1, C2, U3…) • Standard value picker — E12, E24, E96 resistor series and standard capacitor values • Built-in expression evaluator — type "10k*2.2" and get the result instantly • Real-time voltage, current, and power readouts on every component • Net name visualization for complex designs LEARN & EXPLORE • Built-in example circuits: Voltage Divider, Current Divider, Inverting Amplifier, 555 Timer Demo • Resource Center with reference articles • Detailed simulation error guide — understand what went wrong and why • Save examples to your workspace and modify them freely SAVE, EXPORT & SHARE • Save unlimited circuits to your workspace • Export circuits as portable .circuit files with embedded thumbnails • Import circuits from other users or devices • Add names, descriptions, and metadata to every project DESIGNED FOR iPAD & iPHONE • Built 100% with SwiftUI for a native Apple experience • Optimized for both touch and Apple Pencil • Works entirely offline — your data stays on your device Singular is the circuit simulator that students wish they had during lectures, that makers reach for at the workbench, and that engineers trust for quick verification. Download it and start building. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/