
App icon sizes for iOS and Android: every file your app needs
Your app needs several icons: the store icon, the home screen icon, the push icon. Here are the sizes for iOS, Android and the web, and the rules behind them.


Your app needs several icons: the store icon, the home screen icon, the push icon. Here are the sizes for iOS, Android and the web, and the rules behind them.


The short version. Mixcloud is an extension of GoodBarber, the no-code app builder, that adds a Mixcloud account as the source of an Article section. The section lists the account's public shows, newest first, with their cover, date and tags. Each show opens on its own page, where it plays in Mixcloud's official player, above its description. You connect it with the account name, or the link to its profile: no key and no developer account. It is free for Content apps.Mixcloud extensionSection of the appArticleWhat you enterThe account name, or the link to its profileWhat the app listsThe account's public shows, newest firstWith each showCover, date, tags and descriptionPlaybackMixcloud's official player, on the show's page: no offline or background listeningUpdatesAbout every 30 minutesPriceFree for Content appsMixcloud was built for long-form audio: radio shows, DJ mixes and podcasts. By its tenth birthday, in February 2020, 1.7 million creators had uploaded 50 million shows to it,…


A simple no-code app can reach the App Store in 1 to 2 weeks, or Google Play in 3 to 5 on a new personal account. See timelines by route and the store waits.


Making a simple app is no longer hard, but publishing takes more work than most expect. See how hard it is by app type, by stage, and how long the stores take.


An app section that helps your customers plan their Christmas gifts, budget included, without collecting a thing. The full prompt, ready to paste.


One QR code can send iPhone users to the App Store and Android users to Google Play. Here is how it works, where to print it and what to test first.


iPhone Duo, the first foldable iPhone, went on sale on October 23, 2026. Your GoodBarber app adapts to both displays after a rebuild: what changes.


In GoodBarber, your app's corners can be square, rounded at 4 px or round, for cells, buttons and fields. Any other radius goes in the JSON.


Take a sports club that wants its members to choose the date of its tournament. In its Create with AI section, it writes: “Add a poll to choose the tournament date, with the results.”The agent first reads the app's context: its palette, its fonts, its logo, the files already added. It looks up GoodBarber's design system, written by our designers. Then it writes the section's files.The votes have to be shared between all the members. The agent spots this and asks the question, with three answers:Create the app's database: one database, run by GoodBarber. Its tables start empty.Connect my Supabase: the data goes to the club's Supabase project.Cancel: the agent builds the section without a database, and each phone sees only its own votes.The club picks the GoodBarber database. The agent then opens the section in a browser, at the width of a phone, and tries its buttons. It looks for errors: a script that crashes, a broken image, text that runs off the screen. It fixes what it finds,…


Every app needs a privacy policy before Apple or Google will publish it. Here is what it must say, where to put it, and a template for your app.


This step-by-step guide is for those who want to create their own applications using AI technologies. It explains which type of AI tool is best suited to which purpose, describes the features of each tool, and how to go from idea to published application.


GoodBarber apps can now show a real estate agency's Kyero listings on a map or as a list, kept up to date from the feed its software already publishes.


Siri Actions will answer three questions about your app's events: what's on today, what's coming up, and what's on this weekend. The events come from the ones already on your app's home page, so there is nothing to set up.


For internal communication, start with Teams or Slack if every employee has an account, and use an employee app to reach the staff who have none.


GoodBarber apps can now show the properties of the Home listings catalog a real estate agency sends to Meta for its ads, on a map or as a list.


You might wonder what a map in your colors really changes. Here are three examples, from design consistency to the story you want your app to tell.


Selling apps to schools as an agency: what a school really buys, what each app costs you on a single reseller plan, and the Apple account step to start at once. Every fact below was checked at its source on October 27, 2026.


The short version. Givebutter Events and Givebutter Campaigns are two extensions of GoodBarber, the no-code app builder, that read a nonprofit's campaigns on Givebutter. Givebutter Events fills a Calendar section with upcoming events, at their time in the event's time zone, with their location unless you share it with attendees only. Givebutter Campaigns fills an Article section with active forms and fundraising pages, with their cover image and description. You connect them with a Givebutter API key. Both are free for Content apps: each section counts as one of the extensions included in your plan.A lot of giving already goes through Givebutter. On Giving Tuesday 2025, supporters gave $20 million on the platform, up from $16.4 million in 2024, from more than 93,000 donors across 16,000 active campaigns, according to Givebutter's recap published on December 8, 2025. Here is how the two extensions play out for an animal rescue.


In Structure, the "Add a section" button opens a window that starts with a question: "What do you want to add?". Below it, the list gathers everything GoodBarber can add to an app, grouped by what each entry does to it: what adds a section, what fills a section from a service you already use, what works in the background without adding a screen, and what enriches a section already in place. Ideas to build with the AI Extension Builder have a group of their own.


The short version. Zeffy Events and Zeffy Campaigns are two extensions of GoodBarber, the no-code app builder, that read a nonprofit's campaigns on Zeffy. Zeffy Events fills a Calendar section with upcoming events, one entry per date when an event runs on several dates, each with a button that opens its Zeffy ticketing page in the app. Zeffy Campaigns fills an Article section with donation forms, peer-to-peer fundraisers and memberships: memberships open in the app, donations open in the phone's browser. You connect them with your Zeffy API key. Both are free for Content apps: each section counts as one of the extensions included in your plan.Zeffy says more than 100,000 nonprofits have raised over $2 billion through its platform, in an article published on June 16, 2026. Here is how the two extensions play out for a youth theater company that sells its show and raises funds on Zeffy.


In GoodBarber, each color of your theme plays a role. On one of our apps, changing a single color repainted 95 settings at once, without opening a screen.


The short version. Planning Center is an extension of GoodBarber, the no-code app builder, that fills a Calendar section with the events a church publishes on Church Center over the next six months. Recurring events appear once per date, at their public times, in the church's time zone, with their image, location and description. When an event has a sign-up, a button opens the form in the app. You connect it by signing in with a Planning Center Calendar administrator account: there is no key to copy. It is free for Content apps: each section counts as one of the extensions included in your plan.Many churches already run their calendar in Planning Center: it counts 78,000 active churches and 4 million active users, according to its About page, consulted in October 2026. Here is how the extension plays out for a church with a weekly service and a youth retreat.


The short version. HelloAsso Events and HelloAsso Campaigns are two extensions of GoodBarber, the no-code app builder, that read an association's public forms on HelloAsso. HelloAsso Events fills a Calendar section with upcoming events, with their date, venue and prices, and a button to register in the app. HelloAsso Campaigns fills an Article section with memberships, donation forms and fundraisers: memberships open in the app, donations open in the phone's browser. You connect them with your association's HelloAsso API credentials. Both are free for Content apps: each section counts as one of the extensions included in your plan.HelloAsso is where many French associations already sell their tickets and collect their memberships. In February 2025, it passed two billion euros collected for associations since 2009, half of it in the previous 18 months, and it counts 376,000 registered associations, according to Le Journal des Entreprises on March 6, 2025. Here is how the two extensions…


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