Every app is built from the same few parts. Screens are the pages you see. Buttons start an action, like Save or Send. Inputs take information from the user: a text box for typing, a switch for on or off, a slider for a level like volume, a date picker. Data is everything the app keeps, like your notes, your high score or your friends list. Learning to spot these parts is the first step to planning your own app.
Screen, tap, type, keep — “screens show, buttons act, inputs take information, data is kept”
A screen is one page of the app; a button starts an action.
Inputs take information: text box (typing), switch (on / off), slider (a level), date picker.
Data is what the app keeps: notes, scores, settings, lists.
Use it for: Sketching your first screens and describing an app idea to a team.
Worked example: 🧩 How many buttons does this app screen have?
[title] New Note
[button] Save
[button] Help
[switch] Remind me
[slider] Brightness
[text box] City → 2
Look only at the lines marked [button]: Save and Help.
The switch, slider and text box are inputs, not buttons.
Check: Inputs here: Remind me, Brightness, City — 3, so 6 parts − 1 title − 3 inputs = 2 buttons ✓
Work it out in your head or on paper, then tap your answer — or type it and press Check. Stuck? Press “Show me how”.
Right: 0 · Tried: 0
🏁 Lesson 2 test
20 questions. Check each answer, then go to the next one. Get 16 or more right to pass.
🏅 Sign in with Google to earn the
🧩 Screen Part Spotter badge when you pass — and a certificate when you finish all 8 lessons of
Part 1 · What Apps Are. You can still take the test without signing in.
👩🏫 App development classes — live online, request a call back
Prefer a real teacher? TalentJR teachers take live online classes anywhere in India. Tell us what
you need and our team will call you with timings and fees.
💻Live online classesSmall groups or 1:1 with a teacher, from home, any city.
📞We call you backOur team asks what your child needs, then shares timings and fees.
🏠Home tutor?We are still building our list of home tutors — ask on the call if there is one near you.
