New: your progress follows you across iPhone, iPad and Mac. • Answers, your review schedule, mock papers and simulator runs come together on every device signed in to your iCloud account. Nothing to set up: the switch is in Library › Sync. • It runs on your own iCloud. There is no account, and the developer cannot see your progress. • Each device keeps its own copy, so studying offline works as before and catches up when you are back online. • With sync on, "Reset all progress" clears every device. • The free questions, free mock paper and free simulator run are shared by your synced devices.

New: the Control-Room Simulator, on the Practice tab. • Take a simulated shift at the BA, TOP or RC desk in nine scenarios: the largest unit trips at the evening peak; ACE beyond BAAL; a line trip loads the parallel path; an IROL exceedance against its Tv; short of capacity, EEA 1 to EEA 3; the EMS goes dark; interchange requests against the clock; voice paths down; and evacuating the control room. • One model runs the system, and the clock stops at each decision. Read the live displays, choose what to do or answer a three-part communication (confirm, reissue or take another action), then watch your choice play out. • Every shift ends in a debrief, in counts rather than percentages: which obligations you met or missed against the standards' own clocks and with how much time to spare, every decision explained, and your shift charted against the reference play on the same draw. • Every number on screen is tagged: a NERC figure with its requirement, a value your company or RC sets, or an assumption of the model. • New numbers every run. Try one run of any scenario free; Full Access opens all nine on all four credentials. If you already have Full Access, the simulator is included. • Keyboard: A–D, 1–4 and Return for decisions; C, I and X for three-part communication. Also in this version: • One wrong answer on a knowledge area you had not tried could raise your readiness estimate. It no longer does. • Questions left blank on a mock paper no longer go into your study record. The paper's own score still counts them as wrong. • The session verdict and the Home readiness chip are judged on exact counts against the cut score, without rounding. • A post-contingency margin question that named two different circuits now names one.

• Full Access: Grid Prep is now free to try, with 50 practice questions, a full mock paper on any credential and the whole Library. A single one-time purchase unlocks everything else, with no subscription, on iPhone, iPad and Mac. • Already using Grid Prep? Nothing changes for you. Everyone who downloaded it before this update keeps full access for free. • Confirm your answer: tap an option to choose it, change your mind if you like, then Confirm answer to see the explanation. A–D, 1–4 and Return work on a keyboard. • The one-line's contingency analysis is now solved on a power-flow model and judged against Emergency Ratings, as FAC-011-4 sets out, with the distribution factor printed for every outage. • The one-line and AGC control board now size themselves to fit the sheet on iPad and Mac, and open from the review after a mock paper. • Clearer VoiceOver labels throughout, and smaller fixes.

New name, same trainer: System Operator Prep is now Power Grid Operator Exam Prep, shown as Grid Prep on your Home Screen, so candidates searching for the NERC exams can find it. • Now on Mac, as a native app. • Runs on iOS 26 and iPadOS 26 as well as 27. • On iPad, the generated one-line and AGC control board open as a full page, so the whole contingency analysis report fits on one sheet. • Available in more countries and regions.