Here are 30 ideas, for free, fun, or profit. Basically for you to use however you want.
- An events website (Meetup, Facebook, EventFinda, and every other event content aggregator should steal this) whereby once users sign up, looks at their device's location data (if the user gives the application permission, and location services are active) and calculates when to send the person a reminder based on how long it will take them to get to the venue from where they are using public transport (via a Google or Waze API for the journey planner feature).
This software just brings existing data together in a way that's helpful to users with more interesting things to think about than when to do stuff.
- Snack Roulette: an app that orders food from a randomised local vendor. Delivery, pick up, and eat out options are available. The user simply authenticates their credit card details, sets their maximum budget for the meal and number of eaters, is informed how many options there are, hits confirm, and then receives the result which is automatically billed. The delivery option comes with the surprise of seeing who comes to the door and with what.
- Weight guesser: an app that estimates a person's bodyweight when you point your phone's camera at your reflection. Users train (or try and screw with) the app's machine learning by entering the correct value, if known.
- Memory fibres in a necktie, that remembers it's folds once you train it.
- A collapsible drinking cup.
- Moisture wicking shoelaces, to dry your shoes while you wear them.
- A lexicon of new words to accurately describe flavour and flavour combinations.
- Modular language components for easy general production of new words that are self-describing.
- A shirt with an invisible wax coating on some of the fibres so that when you sweat, the darkening of the unwaxed fibres shows an image.
- Psychometric testing data analysis to correlate project success rates and ROI with certain personality traits, to quantitatively measure company values.
- An app that uses the camera and optical character recognition to parse and save the information on a business card into your address book so you only have to photograph the card, not type anything.
- An attachment for table legs that doubles as a decorative floor protector and a precision height adjuster. Your antique wooden table never need wobble, no matter how warped the wood gets over time.
- An app that displays a cell network coverage heat map: you can see how many bars you'll have at any place before you go there.
- An API for the cellphone coverage heatmap app above which serves data to your route-finder app (like Waze) and warns you before your journey that there will be lost or diminished coverage where you're going.
- Measure the minimum distance at which people can sit beside each other facing the same way without being able to legibly see each others mobile device screen, and mark that distance as "privacy distance" at train stations and other public places so it's easy for people to be systematically courteous of each other.
- Two positional sensors attached (or inbuilt) to a monitor that enable monitors to triangulate their positions in relation to each other and automatically configure seamless mouse cursor movement between screens that aligns with the monitors' actual positions in space.
- An app that let's you and another user have on your screen a frame showing what's on the other person's screen (minus the frame!).
Ideal for showing loved ones (or researchers) your screen and content habits.
- A background app that lets you record all activity on your phone into a compressed video file that you can refer to later or access remotely, to provide an evidence-based way to know if your phone has been messed with.
- A background app that lets you record from both cameras into a compressed video file. An ideal way to document the life of your double-chin.
- Public dashcam app that lets you put a live feed of what your car's dashboard mounted camera sees onto the Internet. With an app that lets people view it.
- An app like Flightradar24 but which shows all planes, trains, buses, ferries, and other publicly transmitting vehicles, anywhere in real time.
An additional feature that lets you tap any vehicle and see a dashcam/cockpit live video feed, if available.
- A company with total transparency, automatically Tweeting or publishing business insights as they’re derived from data.
- A machine-learning behaviour analysis app that learns via the accelerometer, tilt, and cameras the minutiae of the user’s phone position when in use or in your pocket or bag, and automates features like locking, launching apps, and turning apps on and off according to your usual behaviour.
- GPS for buses - takes users’ positional data and use of journey-planning software and gives bus drivers a dynamic mini-map of nearby bus users who may be likely to board the bus. This feature reduces missed bus trips for users by enabling more informed driver discretion on whether or not they can and should wait for close-running passengers to board before leaving each stop.
- A cochlear insert that voices positive thoughts to the user. Can be set off, to a frequency, or reactive contextual mode using software that determines – via Bluetooth to the mobile device – location, time of day, and inferred activity.
- Shirt and trouser pockets tailored to the exact measurements of your device and wallet and keys.
- A mass producable, wearable electrocardiogram hardware plugin for smartphones.
- Mechanically compactable public trash cans that let a helpful populace fit more trash in.
- Data driven ubran planning in industrial parks to plan food vendor availability and revenue by evaluating the number of personnel per area, food suprlus margins, and anonymised individual user habits to feed everyone, minimise waste, and maximise consumer satisfaction.
- GPS that factors in the weather by correlating past weather conditions with past traffic patterns, and outputs driving advice per driver factoring in advice it gives to all drivers, to mastermind the traffic network and avoid replacing organic traffic congestion with app-coordinated traffic congestion.
- GPS that that lets you mark and record intersections, roads, and suburbs that you wish to avoid so you never get routed through a place you don’t want to go.