MilliLog is now available in Japanese.

Ready for iPhone Duo. • Half-folded: the React game moves off the fold, into the left half or the top half depending on how you hold the phone. In local multiplayer, each player gets their own half. • Outer screen: the Log keeps room for your events in landscape, and the side menu runs the full height of the screen. • Live: each stick now sits centered in its own half, lined up with the shoulder and trigger buttons, and the stick buttons are labeled L3 and R3.

MilliLog is now free to download. • Free: the live view, millisecond logs and the React game for one controller, plus sound feedback and Game Center. • Full Version, a one-time purchase: vibration and the six haptic oscillators, light-bar color, DualSense adaptive trigger force, several controllers at once, React local multiplayer, and CSV/JSON export. • One purchase unlocks iPhone, iPad and Mac, and works with Family Sharing and Restore Purchases. Bought MilliLog before it became free? Thank you! You already have the Full Version; there is nothing to buy or restore.

New in 1.5 • Three new haptic oscillators: Step cycles through five fixed intensity levels, Random moves smoothly between unpredictable levels, and Ramp climbs to full strength before dropping back to zero. • The original oscillators now have clear names: Fast, Medium, and Slow. • Oscillators now use smoother continuous modulation and shut down cleanly if the haptic engine stops. You now have six distinct vibration patterns for testing controller response across different intensities.

What's New in 1.4.2 - New Liquid Glass app icon, with a dedicated dark mode variant. - Haptic tests now keep your iPhone or iPad awake for the duration of the run, no more interrupted measurements.

MilliLog now connects to Game Center. Set your best reaction time, then check the leaderboard to see where you land against players around the world.

New in 1.4 • MilliLog comes to the Mac! The full controller testing toolkit is now a native Mac app — and one purchase covers iPhone, iPad, and Mac. • Section names now appear in your language — German users finally see "Einstellungen" instead of "Settings". • The About screen links to the new MilliLog website, and all support links open the German pages on German devices. • Easier stick zoom: the whole stick graph is now tappable, not just the dot. • Export buttons are disabled while the log is empty, so it's clear when there's nothing to export.

New in 1.3 • Feel the force! On DualSense controllers, the Live tab now has a Force slider for each trigger — set L2 and R2 resistance independently, from feather-light to full stiffness. • Choose how each trigger fights back with the new Mode menu: Constant resistance, a Weapon-style snap release, a buzzing Vibration, or a Slope that gets stiffer the deeper you pull. • Trigger resistance is released automatically when you leave the app or disconnect the controller, so your controller never stays stiff in your games.

New in 1.2 • Gyroscope sounds! Controllers with a gyroscope now make sound as you move them, with a different voice for each axis — a rattle, a deep rumble, and a pulsing beat. • New sound controls in Settings: switch Gyroscope Sounds on or off, and use the new Sensitivity slider to fine-tune how much movement it takes to make a sound (set it to 0% to turn motion sounds off entirely). • Motion sounds now stay quiet during the React mini-game, so nothing distracts from your reaction time. • Fixed an issue where the battery indicator could show 100% for controllers that don't report their real battery level — it now shows "Battery info unavailable" instead.

Introducing React, a new minigame for testing reaction time. Play solo or challenge friends in local multiplayer with up to 4 connected controllers. Scores can be submitted to Game Center.