Need Crazy & Unique App Ideas – Suggest Me Something Cool! 🚀

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1

Hey everyone! :waving_hand:

I try to post in Off Topic but not able to post so i create here.

I’m planning to start building a new Android app, but honestly… I’m totally out of ideas right now :sweat_smile:.
I don’t want to create another normal wallpaper app, quote app, or routine tool — I’m looking for something different, creative, and maybe even a little crazy! but make sure possible with Kodular + Extensions.
For your refrence You can check my other apps: Apps on Play Store :google_play:

:light_bulb: If you have any unique, experimental, innovative, or fun app ideas, please share them with me.

I’d really appreciate your suggestions! :raising_hands:
Thanks in advance, everyone. Looking forward to your awesome ideas! :rocket::sparkles:

2

Ask an AI of your choice
Taifun

3

AI is not familiar with Kodular much, so AI will not provide reply accoardingly, i need reply from real users who worked on Kodular and know about thier components.

4

Here are a few unique, experimental, and fun app ideas you could explore — all doable with Kodular (with or without extensions):

:rocket: 1. “Mood-Based UI” App

An app that changes its entire interface (colors, layout, music, animations) based on the user’s selected mood or a random “mood of the day.”
Why interesting? Great playground for dynamic components, animations, and personalization.

:brain: 2. Micro-Challenge Brain Trainer

A simple app that gives users a 10-second micro-challenge every time they open the app (memory test, reaction game, tiny puzzle).
Why interesting? Fun to build with clocks, tinyDB for scoring, and simple game mechanics.

:satellite: 3. LoRa / IoT Dashboard Simulator

A visual dashboard that simulates IoT devices (weather station, GPS tracker, sensors), even if no hardware is connected.
Why interesting? Lets makers “prototype” IoT apps before buying hardware.

:magic_wand: 4. “Real-World Magic” AR Toolbox

Simple AR-like tools using the camera + overlays:

  • measure objects
  • detect colors
  • highlight shapes (square, circle, face)
    Why interesting? Mixes sensors + camera + image processing extensions.

:game_die: 5. AI Story Creator for Kids

Kids tap icons (hero, place, challenge) and the app generates a fun mini-story.
No need for external AI — can use lists + random selection.
Why interesting? Great to practice lists, logic, and creative UI.

:compass: 6. “Where Did I Park?” Offline Locator

Drops a pin (lat/lng) when parking the car and guides the user back later.
Why interesting? Uses location sensor, maps component, and offline logic.

:musical_notes: 7. Sound-Trigger Playground

App reacts to certain sounds — clapping, whistle, loud noise — and performs actions like animations or mini-games.
Why interesting? Plays with audio amplitude, sensors, and event triggers.

:seedling: 8. Plant Health Diary

Users take a picture of a plant every week. The app creates a growth timeline as a scrollable gallery.
Why interesting? Uses image storage, tinyDB, and dynamic UI.

:crystal_ball: 9. “Secret Messages” Encoder

Send fun encoded messages to friends (emoji cipher, color cipher, pattern cipher).
Why interesting? Great for anyone learning to work with text transformations.

:date: 10. Micro-Commitment Habit App

Instead of classic habit tracking, this app asks one tiny daily question:
“Did you improve 1% today?”
Shows beautiful statistics from one simple tap.
Why interesting? Elegant minimalism + charts + daily notifications.

Greetings from ChatGPT

5

Here are a handful of “why-has-nobody-built-this-yet?” ideas that fit Kodular’s bricks-and-blocks world.

All of them stay inside what Kodular can already do (sensors, components, extensions, Yandex Translate, charts, Firebase, etc.) so you can start prototyping tonight without writing a single line of Java.

  1. Pocket-Sized “Scream-to-Skip” Jukebox

    Core gimmick: the phone’s mic listens for a sudden spike in volume (a clap, scream, whistle).

    When the spike is detected the player skips to the next track.

    Extra twist: keep a leaderboard in Firebase of “loudest skips” in dB and let users vote for the funniest scream.

    Kodular bits: Player + Sound Sensor (or extension “AudioMeter”) + Firebase + TinyDB for local cache.

  2. Augmented-Reality “Time-Capsule” Camera

    Take a photo → type a message → set a location radius (10 m … 5 km).

    The image is uploaded to Firebase Storage; its GPS hash is stored in RealtimeDB.

    Any other user who walks into the radius gets a silent notification; when they open the app the exact same photo is overlaid on their camera view (using the Canvas and ImageSprite, transparency 70 %).

    Result: ghosts of past moments appear only when you stand where the original photographer stood.

  3. One-Button “Mood-Synth” Looper

    A single giant button.

    Each tap records a 2-second sample from the mic, pitch-shifts it to the current key (use the TaifunPlayer extension for pitch), layers it on a 4-bar loop, and auto-quantises.

    Shake the phone to change scale (accelerometer).

    Export the loop as a 10-second WAV that can be posted directly to WhatsApp Status.

  4. “Silent Disco” Flash-Mob Connector

    Users create or join a “room” (Firebase).

    At exactly 20:00 local the app vibrates once, turns the LED torch on/off in Morse, and starts playing the same 3-minute track that was voted by the room (streamed from a URL).

    Everyone is listening on headphones, so from the outside it looks like a spontaneous, synchronised dance outbreak in the middle of a mall.

  5. AI-Generated “Doodle-Fight”

    Two phones, Bluetooth or QR-code pairing.

    Each round the app asks an AI image generator (via REST, e.g. Pollinations or HuggingFace free tier) for a random noun: “armchair made of cheese”.

    Players get 30 s to draw it on the Canvas; when time is up the same AI rates both drawings for similarity to the prompt (send base64 image → CLIP similarity score).

    Fastest + most accurate doodle wins.

    Kodular side: Canvas, Clock, base64 encode, Web component, Bluetooth Client for real-time trash-talk.

  6. “Walk-the-Worm” Fitness Prank

    Uses the pedometer.

    Every 100 steps the phone secretly plays a 0.3-second “ba-dum-tss” rimshot through the earpiece at max volume.

    The user has no idea where the sound is coming from; the app icon is disguised as a boring “System Update”.

    Optional: after 5 000 steps the app reveals itself and offers to donate 10 c (via in-app Paypal) to a charity of choice—guilt-free trolling.

  7. “Pocket Planetarium” for the Touch-Impaired

    Point the phone at the sky; the compass + orientation sensor calculate Right Ascension / Declination.

    Instead of showing a screen, the app SPEAKS the name of the constellation or planet currently in view (TextToSpeech).

    Handy for visually-impaired stargazers or for everyone when it’s -10 °C and you don’t want to take gloves off.

  8. “404 Café” Hidden-Menu Finder

    Users photograph the weirdest item on any café menu → OCR (ML Kit extension) → post the text + geolocation to a public Firebase.

    The app builds a world map of bizarre dishes: “Pepsi-Flavoured Latte, 51.5°N 0.1°W”.

    Up-vote system; when you travel, the app notifies you if you are <500 m from a listed “404 dish” so you can try it IRL.

  9. “Inverse Ringtone”

    Instead of playing a sound when someone calls, the app plays the sound continuously and STOPS when the call arrives.

    Choose your ambient loop (rain, brown noise, spaceship hum).

    The sudden silence is impossible to miss, yet totally non-disturbing for everyone else in the library.

    Requires only the PhoneCall component and Player; no SMS or CALL permission if you use the “missed call” event.

  10. “Emoji-Only Chat” Micro-Network

    Create a room ID with 3 emojis (:pizza::cactus::hedgehog:).

    All messages must be built from the 3 000 official Unicode emojis; the app ships a tiny Kodular-built “emoji keyboard” vertical arrangement.

    No text = no language barrier.

    Bonus: long-press any emoji to hear its official CLDR name via TextToSpeech, turning the chat into a stealth language-learning tool.

Pick one, mash two together, or use them as springboards.

Kodular’s limit is usually your patience, not the blocks palette—so build fast, publish the AIA, and let the community remix.

Greetings from Kimi

6

Here are some unique app ideas they might find interesting:

Reverse Todo List - Instead of listing what you need to do, it tracks what you’ve actually accomplished each day. Uses your phone’s sensors to detect activities (walking, sitting, phone usage patterns) and auto-generates a satisfying “look what I did today” summary.

Sound Palette - Lets you “paint” with sounds instead of colors. Touch different parts of the screen to layer ambient noises, instruments, or nature sounds. Save compositions as audio wallpapers that play throughout your day.

Social Battery Tracker - Gamifies your social energy levels. Log interactions (quick chat, deep conversation, group hangout) and it visualizes your “battery” draining or recharging. Suggests when you might need alone time or when you’re recharged enough for socializing.

Micro-Journaling via Notifications - Sends random prompts throughout the day (“What made you smile in the last hour?” “Describe your current mood in 3 words”). You respond directly in the notification. Builds a fragmented but honest daily journal without opening an app.

AR Time Capsules - Drop virtual messages, photos, or voice notes at specific GPS locations that only unlock after a set time period. Leave notes for your future self or create treasure hunts for friends that span months or years.

Collaborative Story Dice - Random story prompts (character, setting, conflict) that you develop for 2 minutes, then automatically passes to another user who continues it. Creates bizarre, collaborative flash fiction chains.

Boredom Button - One giant button that generates increasingly absurd micro-challenges (“Convince your phone’s voice assistant it’s actually a pirate” or “Describe your day using only food metaphors”).

Greetings from Claude

7

Thank you for all thos list :grin:

But this looks something crazy, but it take so mjuch database. any guide or instruction on this?

8

:sweat_smile:

There’s alot of free database management, I think I don’t need to mention, have you ever heard of GitHub there’s alot of things, Ideas, codes, API’s and many more, take your time and take a look there.

The only thing to consider it UI designing, even on play store there’s alot of fake apps​:hugs: but they still getting user’s each and everyday

Or start creating heavy apps that ain’t easy to build with Kodular and selling them

1 Like
9

Let me ask Claude again for you
Taifun

You’re right that AR Time Capsules could use significant database space, but here’s how to build it efficiently:

Database Structure (Lean Approach)

Capsules Table:

  • capsule_id (unique)
  • user_id
  • latitude / longitude (location)
  • unlock_date (timestamp)
  • created_date
  • type (text/image/audio)
  • content_url (link to Firebase Storage, not stored directly in DB)
  • radius (geofence radius in meters, e.g., 50m)
  • is_unlocked (boolean)

Key Efficiency Tips:

  1. Store media in Firebase Storage/Cloudinary, not the database - just save URLs
  2. Compress images before upload (max 800px width)
  3. Limit audio to 30 seconds max
  4. Set expiration dates - auto-delete capsules after they’re unlocked + 30 days
  5. Restrict users to 10-20 active capsules max per account

Basic Flow in Kodular

Creating a Capsule:

  1. Use Location Sensor to get current GPS coordinates
  2. Let user record message/take photo/record audio (15-30 sec limit)
  3. Upload media to Firebase Storage → get download URL
  4. Store capsule data in Firebase DB with unlock date
  5. Use Notifier to confirm creation

Discovering Capsules:

  1. Location Sensor continuously checks user position
  2. Query Firebase for capsules within radius (use geohashing for efficiency - check Firebase GeoFire libraries)
  3. Check if current date ≥ unlock_date
  4. If unlocked, show AR View using Kodular’s WebViewer with AR.js or just show on map
  5. Mark as is_unlocked = true

AR Implementation (Simplified)

For Kodular, real AR is tricky. Easier alternatives:

  • Map-based view: Show capsules as pins on Google Maps component
  • Camera overlay: Use Camera component + Canvas to show “floating” message over camera view when near location
  • WebViewer + AR.js: Load simple AR experience in browser (most complex but coolest)

MVP Features to Start:

  • Text-only capsules (no media initially)
  • 50m radius trigger
  • Simple list view of nearby locked/unlocked capsules
  • Push notification when near a capsule
1 Like
10

Dynamic Quiz App(work online + offline)

conditions:
all available quizzes downloaded at same time without click

each quiz contain 5 (1 question - 1 answer by index not by content - 5 options or as you want - 1 explain for each quiz and 1 explain for each question)

add a scroll component for available subjects in (each class)

use dev image loader to cache images

use login system by any databases you want.. the login system only by using unique Code for each member and the code depend on device id after encode the device id and

you can use google sheet or baserow or byethost as database for quizzes

you can use byethost as database for login system

you must add a way to delete code and member from the app after the code reach the expire date

hint: if you want to try byethost or infinitefree database you must use WEBVIEW component because some mysql databases panel can’t be access using WEB component.