Copy, cut and paste, even between circuits. • Copy or cut a selection and paste it wherever you like, even into another circuit. The wires inside it come along. • On iPhone, the bottom bar now holds Select, Select multiple and the Insert and Edit menus, and a trash appears as soon as something is selected. On iPad, the toolbar gathers the same actions and no longer runs off the screen in portrait. • Press and hold a selected component to rotate, duplicate, copy, cut or delete the whole selection. With a keyboard, ⌘C, ⌘X, ⌘V and ⌘D work too. • Ohmira, our analog electronics simulator, is now on the App Store.

Gate input counts now reach the gate. Set a gate to three inputs and you get a three-input gate. Every parameter that changes a component's shape — input count, bit width, depth — now reaches the symbol, the wiring rules and the simulation, and the wires you had already drawn stay attached. A circuit saved before this fix repairs itself the first time you open it. Also new: a What's New screen after each update, and an "Other apps" section in Settings.

Multi-selection and sticky notes. Select several components at once with the new multi-select tool, then move, rotate, duplicate or delete them together — and duplicating now keeps the wiring inside your selection intact. Pin sticky notes anywhere on the canvas to label a block, record a decision, or leave yourself a reminder. Six paper colours, and they move with a drag. Plus a countdown ring on long press, and fixes across the editor.

New: Challenges — a 30-level guided campaign. Take on 30 built-in puzzles, from wiring a single output to building latches, counters, and a state machine. Every challenge gives you a clear objective, optional hints, and step-by-step guidance, then grades your solution with up to three stars for correctness and efficiency. The first six challenges are free; Cirquanta Pro unlocks the whole campaign. Plus refinements and fixes across the editor and simulator.