• Tasks and daily task: every day, a free task at your level is waiting. You build a circuit, complete it, adjust it or rescue it before a part burns out. With every task at your level that you solve cleanly, you move up, 27 levels all the way to the op-amp. On festival days, the task can show the festival’s picture. A streak counts the days in a row. Without Perfboard Lab Pro, the free daily task has a time limit that grows with the level. • More achievements: You now collect 40 badges as achievements in Game Center. • New tutorial: an LED burns out, and you find out why. • Festive examples: for Halloween, Día de Muertos, Diwali, Christmas, New Year’s Eve, Valentine’s Day, Lunar New Year, Nowruz, Ramadan, Hanukkah and Easter there is an example, and for Christmas even two. Their LEDs draw a picture of the festival, such as a pumpkin for Halloween or a Christmas tree for Christmas. Some blink, others light up depending on the brightness or keep glowing for a moment after being switched off. The examples appear on the Dashboard and among the examples only during the days of the festival. • New sensors (Perfboard Lab Pro): photoresistor, solar module, and NTC and PTC temperature sensors. You set the brightness yourself or take it from the camera, and you set the temperature yourself. • On iPhone Duo, Perfboard Lab uses the large inner screen like an iPad and turns to any orientation. The outer screen works like an iPhone. • With Apple Pencil, you quickly switch between “Draw wires” and “Delete” on iPad.

• 3D view in Perfboard Lab Pro: your circuit appears with real component packages. You rotate, tilt, pan and measure directly in 3D. LEDs light up, and the relay’s armature and contact spring move with the coil current. Without a subscription, a short preview shows the 3D view. • Keep working on all your devices: with Perfboard Lab Pro, circuits and settings stay the same on all your devices via iCloud. • New parts: 78xx voltage regulator with selectable output voltage and NE555 timer. • New examples: multivibrators with the NE555 (astable and monostable) and an astable multivibrator with two transistors. All examples are laid out more clearly and carry a name tag. • Strips on the stripboard can be cut between two holes and joined again. • As on a real board, each hole holds only one component lead, and component bodies never touch. Transistors and MOSFETs sit in a TO-92 package, the op-amp in a DIP-8 package like the TL071. • The formula collection is interactive and adapts to your circuit: with the power on, every worked example calculates with the measured values of your parts and shows where each number comes from. New topics are DC voltage source, current source, incandescent lamp, motor, potentiometer, diode, buzzer, voltage regulator and NE555. Every symbol has a fixed colour in the sketch, the formula and the worked example. • The oscilloscope shows the waveform live, with time per division, period and frequency. • In landscape, the app shows only the board, in 2D and in 3D. • Oscillating circuits are analysed over their whole period. • A consistent interface: sheets, buttons, panels and lists look and behave the same everywhere. • Many small improvements.

• AI-assisted tasks and explanations in Perfboard Lab Pro: tasks at your level of knowledge and step-by-step explanations of your circuit on the board. On devices with Apple Intelligence, Apple’s on-device model chooses the tasks and explanation steps. All texts are written in advance. • Formula collection: formulas from R = V / I to reactance. Each formula comes with a labelled sketch, an explanation, the meaning of all its symbols and a worked example using the values of your circuit. • Copying parts: the copy keeps all values, and a separate button opens the formulas. • Text labels annotate the circuit, with font size, colour and transparency of your choice. • Measuring at every terminal: for parts with three or more terminals, the multimeter measures the terminal you tap against GND, for example an input of the op-amp. • New parts: relays as normally open and normally closed, N- and P-channel MOSFETs, electrolytic and ceramic capacitors. • New examples on the stripboard and the breadboard. • Overloaded parts smoke, burn and char. Polarized parts such as electrolytic capacitors and LEDs also break when reversed. • With AC too, overloaded parts first get hot and smoke before they burn out. • The simulation goes on after every change: capacitors keep their charge and coils their current. • The page “Calculation basis” now shows every calculation method with its formula, legend and worked example. • Accessibility: you can use the app with Voice Control. It follows Reduce Motion, Differentiate Without Color and Increase Contrast. • Sources limit their current like a lab power supply. Maximum current and maximum voltage can be set. • A new app icon and many small improvements.