Acceleration vs Mapvaders

'Acceleration' is special in two ways. First, it processes the readings from your built-in accelerometers in real time to show only horizontal acceleration. Second, it takes data directly from your built-in accelerometers, sidestepping built-in smoothing. Created originally to help EV drivers who were concerned that their brake lights were coming on inappropriately during regenerative braking, it can also be used to display braking and acceleration performance. It's a small app that's easy to use. You don't have to sign-in, there aren't any ads and an internet connection isn't needed. To use the app, set your device in one fixed place. Tap 'Calibrate' to let the app find the size and direction of gravity. Horizontal acceleration is now displayed. When 'Record' is tapped, for the next 13 seconds a scatter graph of calculated readings is displayed. Two green arrows let you increase or decrease the vertical scale of the graph. By default, unsmoothed data from your accelerometers is used. Tapping the 'Smooth' button continuously averages the last last ten readings. This helps to manage results. To help check the correct function of brake lights during regeneration, the 'Lamp' button displays a panel that changes from blue to yellow at 0.7m/s/s, and to red at 1.3m/s/s. Upgrading will let you save your sets of data to look at later. You can also export full-sized pictures of graphs into your camera roll. However, apart from this, the free version of this app is fully functional. This app takes raw data from the accelerometers - not the processed data provided by the operating system. When 'Calibrate' is pressed, the magnitude and direction of gravity is measured, relative to the device. The app then continues to collect data from the accelerometers, mathematically projecting it onto the plane perpendicular to the original gravity vector. It reports the magnitude of this projected vector. This process produces a reliable result for horizontal acceleration, whilst making you aware of jitter and sensitivity.

Discover and collect Space Invader mosaics around the world with Mapvaders, the ultimate companion for invader hunters. THE MAP IS THE APP No tab bar, nothing to learn. Thousands of Invader mosaics sit on one map, and a panel over it lists what is near you. Drag it up to read the list, push it down to give the city back to the map. Pick a city and the map flies to it; tap an invader in the list and the map comes onto that piece. FIND ANY INVADER Search by name, by a code like PA_1159, or by city, and the map opens what you picked. The Atlas indexes every invader, grouped under its city, with filters for district, points, condition and flash status behind a single button that tells you how many are on. TRACK YOUR COLLECTION Mark invaders as "flashed" when you find them. Your Record holds your statistics, an activity heatmap by day and hour, a timeline of every flash, a gallery of your photos, the rarest pieces you have flashed, and the ones destroyed since. HUNT WITHOUT A SIGNAL Download a city's map before you go and hunt it with no network at all. Settings lists every downloaded city with its size and date, and removes it in one tap. STAY INFORMED WITH PROACTIVE ALERTS Follow your favorite cities and get a push notification the moment a new invader appears in one of them. Never miss a new invasion. READABLE AT A GLANCE Flash status and condition read by shape as well as by color, so one look is enough in bright sun. Every figure is set in a monospaced face so numbers line up. Light and dark modes are both there. PREMIUM Free hunters see the area an invader sits in, to within 250 m, and can tap it to list what it holds. Premium unlocks the exact position of every mosaic, and the pins and distances that depend on it. GLOBAL COMMUNITY DATA Benefit from crowdsourced location data maintained by passionate invader enthusiasts worldwide. Help keep the database accurate and up-to-date. Perfect for urban explorers, collectors, and anyone fascinated by Invader's iconic 8-bit mosaics. Whether you're a casual observer or a dedicated hunter, Mapvaders turns your city walks into treasure hunts. Available in English, French, and Spanish. Disclaimer: Mapvaders is an independent application and has no affiliation with Invader (the artist) or the Space Invaders franchise. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/