External resources
We wanted to compile some resources for you to help you make your app stand out from the rest.
Create custom screenshots
Download examples
If you want to see examples of screenshots from other brands you can see them here:
Screenshot sizes for App Store Connect
Apple tiene un conjunto de tamaños permitidos para las diferentes categorías de dispositivos. Con la introducción del «Administrador de medios», ahora puede usar los tamaños de dispositivo más altos posibles y Apple reduce automáticamente esas capturas de pantalla para dispositivos de menor resolución.
File Format
- 72 dpi, RGB, no layers, no transparency
- High quality JPEG or format PNG
Screenshot sizes for iPhone
Device size | Screenshot size |
6.5-inch | 1242 x 2688 px |
5.8-inch | 1125 x 2436 px |
5.5-inch | 1242 x 2208 px |
4.7-inch | 750 x 1334 px |
4-inch
| 640 x 1096 px |
3.5-inch
| 640 x 920 px |
Screenshot sizes for iPad
Como la segunda y tercera generación de 12.9 pulgadas tienen exactamente el mismo tamaño de captura de pantalla, solo podemos distinguirlas a través del nombre del archivo. Capturas de pantalla para la categoría «nueva» de 12.9 pulgadas (3.a generación), incluya @ 3 en el nombre del archivo.
Example: ipad@3-in-US-1.png
Device size | Screenshot size |
12.9-inch | 2048 x 2732 px |
12.9-inch | 2048 x 2732 px |
11-inch | 1668 x 2388 px |
10.5-inch | 1668 x 2224 px |
9.7-inch | 2048 x 1496 px |
Generate app icon
Every app needs a beautiful, memorable icon that grabs attention in the App Store and stands out on the home screen. Your icon is the first opportunity to communicate, at a glance, the purpose of your app. Design an image to make your brand memorable.
Lil Bro is a designer who shares with us 3 templates to generate super modern icons:


If you like minimalist and flat designs more, this Photoshop template will help you create your icon quickly.
Free editing tools
At King of App we like to provide free alternatives to our users. We all know the different tools in the Adobe suite, but their price is not always affordable for everyone.
We try to make sure that all our tutorials and resources use Open Source software so that you have greater margins.
CANVA
It is an image editor, where you can enjoy hundreds of templates that you can reuse very easily.


PHOTOPEA
It is a free online photoshop, where you can upload PSD, Illustrator or Sketch files and edit them.
BLUEGRIFON
It is a wysiwyg web editing software, an open source dreamweaver, perfect for retouching your code with its dual screen option.

Tools for generating mockups
There are several tools on the Internet that will help you generate screenshots or mockups to make your app stand out in the Apple and Android stores.
Resource banks
Enriching our project with external resources will give a higher level to the content we offer to the user.
FREEPIK
It is a bank of icons, images and templates for your projects. There is a bit of everything, and among its results there are some paid ones.


FREEFRONTEND
It is a blog with free html, css and javascript resources that you can reuse in your web and mobile projects.
FLATICON
It is a free vector icon bank where if you register you can edit the icons in the service itself and download them ready for your app.


UNSPLASH
It is a free image bank where you will find royalty-free photographs for your mobile projects.
UIFUSES
It is a bank of free templates where you will find web elements, web templates and UI design packs.

Other features
King of App allows you to reuse hundreds of tools based on javascript integration. Here we provide a wide selection for you to integrate into your projects.

Calconic
It is a free image bank where you will find royalty-free photographs for your mobile projects.
Audio Player Amplitude JS
It is a free image bank where you will find royalty-free photographs for your mobile projects.


Oembed Integrations
You will find hundreds of integrations of all kinds to integrate into your app.
EX-CO
This tool will allow you to create live content: Flip Images, Surveys, Question Contests, Trivia, …


Typeform
Forms and surveys for people. The most important online interaction for a company is the exchange of information. Don't leave it to chance.
Sand
This tool will allow you to create live chat, real-time feed, social media feed, sports solutions: real-time scores, match schedules and results, scoreboards, last match, next match, live match, standings, event calendar, …


Tidio
Fast and easy live chat software for extraordinary customer service. Engage your website visitors and
get happier customers.


Elfsight
It is a platform with more than 60 widgets for e-commerce, marketing tools, forms, content, chat and social plugins.
Smartsupp
Free chat for your website or store. Use online chat and increase your sales.


123 Form Builder
Create efficient online forms Easy to build forms and surveys with real-time drag and drop. Simply drag and drop fields to your online form and select your notification email.
SocialStream
We aggregate your entire brand web presence into one stunning widget. Showcase your SocialStream on your event, website or app.


Scheduler
Your own customer booking system, custom branded to match your business. Standalone scheduler or seamlessly integrated with your app.


Bands in town
One of the leading global marketing platforms for engaging with the most passionate music fans. Manage it all from one place and publish it all in your app.


Simplecast
Say hello to the modern, independent podcast hosting and analytics platform. Simplecast remains the easiest way for podcasters to publish audio to the world, then add your podcasts to your app.
Mixlr
Stream live audio from one of our apps to your own website or page on Mixlr.com. Build your own audience with your live podcast, music, talk, or sports show, and invite people to tune in


Spreaker
It is a podcasting tool that has everything you need to create, distribute and monetize your podcast.
Ecwid
Ecwid gives you the power to easily sell anywhere, to anyone, across the internet and around the world. Control everything from a single platform with centralized inventory, order management, and pricing. It doesn’t get any simpler than this.


Tithe
Increase the things you give to your community. Grow your church. Tithe.ly helps you increase donations and engagement with tools built for churches and ministries.
Chat Center
Chat apps help you provide the same real-time answers to your customers and prospects that only big businesses used to be able to afford, even if you're a 1-person business.


Gum Road
An ecommerce platform designed for creators. Sell your creations on your app in the easiest way.


Shoprocket
An ecommerce tool to sell your products on your app. Mcommerce platforms are often designed to set up a store, but if you only want to sell one or a few products, this is your ideal option.
Booxi
You can now add online appointment booking to your own app by simply integrating the Book Now widget. Your customers will be able to book appointments online the same way they do from your booxi business page, but within your app; keeping your customers in your ecosystem.


Sagenda
An ecommerce tool to sell your products on your app. Mcommerce platforms are often designed to set up a store, but if you only want to sell one or a few products, this is your ideal option.
You can book me
Manage your availability Flexible schedule and availability Set a regular weekly schedule or customize it for each week. Complete control over when you want to schedule meetings.


Carrd
Create one-page views for almost anything: Whether it's a personal profile, a landing page to capture emails, or something a little more elaborate, Carrd has you covered. Simple, responsive, and yep, totally free.
Poptin
Create any type of popup · Create smart embedded forms · Send coupons and welcome emails to your website visitors


Talki Forum
An ecommerce tool to sell your products on your app. Mcommerce platforms are often designed to set up a store, but if you only want to sell one or a few products, this is your ideal option.
Feed Wind
The easiest way to add dynamic content to your app. Create your own feeds tailored to your content.


Plotly
With Plotly, your teams can easily design, develop, and execute data science initiatives that deliver real results.
Follow your league
Easily add your club's standings to your app with this sports tool: multiple sports, professional and amateur leagues, and news for your app.


Doubt
Do you need to create a static page for your app and don't know how to design it? Duda will help you with its drag and drop builder and then you can add it to your app.
Reactions bar
Tap into your audience's emotions and drive engagement and revenue for your content using Reactions Bar's free emotional reaction tools.


Loyalty Lion
Supercharge your app growth by developing a better understanding of what will drive the longest-lasting relationships. You'll be able to develop loyalty programs to retain your customers.
Events Calendar
Everything you need
to display a calendar
in your app. Simple and effective.


Many Chat
Create your own chatbot for your app and assist your customers 24 hours a day.
Eventzilla
It is a complete event creation and management platform with many tools that will allow you to make your event unique.


Simplebooklet
Automatically make digital content interactive from within your app by creating eBooks. So you can influence and engage your audience across digital channels.
Open Table
Helping restaurants of all sizes thrive, so diners can find and book the perfect table for every occasion, our story is one of human connection – between diners and restaurants, and between restaurants and their communities.


Gloria Food
Use our free restaurant ordering software to boost your online sales. No matter how much your business grows, you'll always benefit from taking unlimited orders with zero fees.
Fyrebox
Create a quiz contest to generate leads, educate, or simplify to engage your audience.
