Mobile Development: Kotlin, Swift, React Native, Flutter, Dart, Expo, Capacitor

Open in Telegram

Mobile Dev Hub: iOS, Android & Cross-Platform Coding Tips & Tools Buy ads: https://telega.io/c/APP_Mastery

India10 190 Technologies & Applications3 417...

📈 Analytical overview of Telegram channel Mobile Development: Kotlin, Swift, React Native, Flutter, Dart, Expo, Capacitor

Channel Mobile Development: Kotlin, Swift, React Native, Flutter, Dart, Expo, Capacitor (@app_mastery) in the English language segment is an active participant. Currently, the community unites 40 118 subscribers, ranking 3 417 in the Technologies & Applications category and 10 190 in the India region.

📊 Audience metrics and dynamics

Since its creation on невідомо, the project has demonstrated rapid growth, gathering an audience of 40 118 subscribers.

According to the latest data from 12 June, 2026, the channel demonstrates stable activity. Although there has been a change in the number of participants by -111 over the last 30 days and by -7 over the last 24 hours, overall reach remains high.

Verification status: Not verified
Engagement rate (ER): The average audience engagement rate is 1.49%. Within the first 24 hours after publication, content typically collects N/A% reactions from the total number of subscribers.
Post reach: On average, each post receives 0 views. Within the first day, a publication typically gains 0 views.
Reactions and interaction: The audience actively supports content: the average number of reactions per post is 0.
Thematic interests: Content is focused on key topics such as learning, expo, linkedin, string, udemy.

📝 Description and content policy

The author describes the resource as a platform for expressing subjective opinions:
“Mobile Dev Hub: iOS, Android & Cross-Platform Coding Tips & Tools Buy ads: https://telega.io/c/APP_Mastery”

Thanks to the high frequency of updates (latest data received on 13 June, 2026), the channel maintains relevance and a high level of publication reach. Analytics show that the audience actively interacts with content, making it an important point of influence in the Technologies & Applications category.

40 118

Subscribers

-724 hours

-527 days

-11130 days

598

Post views

No data24 hours

No data48 hours

1.49%

Engagement rate

No data

Posts per day

Ads index

beta

Posts Archive

40 118

40 118

40 118

40 118

40 118

The useEffect clean-up callback executes on every render Most people think it executes only when the component unmounts, but that’s not true. On every render, the clean-up callback from the previous render executes just before the next effect execution. Let’s see an example:


function SomeComponent() {
  const [count, setCount] = useState(0)

  useEffect(() => {
    console.log('The current count is ', count)
    return () => {
      console.log('The previous count is ', count)
    }
  })

  return <button onClick={() => setCount(count + 1)}>Click me</button>
}

This logs the following:


// Component mounts
The current count is 0

// Click
The previous count is 0
The current count is 1

// Click
The previous count is 1
The current count is 2

// Component unmounts
The previous count is 2

🚀 Why This Matters? This behavior is essential for managing subscriptions, event listeners, and cleanup logic effectively. Adding a dependency array ensures the effect runs only when needed

40 118

40 118

URGENT!! You can get a bonus of $1000. We have tested the bot. We have withdrawn the money. Hurry up, the promotion period is 1 day. Bot -> @CriptCasino_bot Casino🎰 online bot -> @CriptCasino_bot 1000$ DOLLARS BONUS💰

40 118

We tested the casino bot. When you register, you get a $1,000 bonus. This is our second time withdrawing money. The promotion lasts for 1 day Casino🎰 online bot -> @CriptCasino_bot 1000$ DOLLARS BONUS💰 PROMO - 555 👇👇👇👇👇👇 BOT -> @CriptCasino_bot

40 118

Good afternoon, we have found a casino bot for you. When you register, you will receive a $1,000 bonus. We have tested everything and have already withdrawn the money Casino🎰 online bot -> @CriptCasino_bot 1000$ DOLLARS BONUS💰 PROMO - 555 👇👇👇👇👇👇 BOT -> @CriptCasino_bot

40 118

Hello, we tested the casino bot. They're giving away $1,000 upon registration. We checked everything and withdrew the money. The promotion lasts for one day.🎰-> @CriptCasino_bot Bot casino🎰 ----> @CriptCasino_bot 1000$ Bonus

40 118

40 118

40 118

40 118

40 118

40 118

Love our channel? Advertise here — and across 6 000+ Telegram channels ✈️ ⚡️ Launch your Telegram ads in minutes with access to verified channels, groups, mini apps, and bots. Reach real, bot-free audiences — from crypto to lifestyle — with automated placements, live analytics, and measurable results. How it works: 1️⃣ Sign up via this link: Telega.io 2️⃣ Add funds 3️⃣ Choose channels and add your ad post ➡️ We’ll take care of the rest Stay ahead — 6 000+ channels to test, track, and scale!

40 118

40 118