# Support Guide for Internet Speed Tester

**App Version**: 1.0.0
**Last Updated**: February 25, 2026

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## 1. Getting Started

### 1.1 First Launch
1. **Complete Onboarding**: Go through the introduction screens to understand the app's features
2. **Grant Permissions**: Allow notification access when prompted for speed test reminders
3. **Choose Language**: Select your preferred language (English, German, French, Turkish, or Spanish)
4. **Run Your First Test**: Tap the speed test button to measure your internet connection

### 1.2 Core Features Overview
- **Speed Test**: Measure download speed, upload speed, and ping/latency in one tap
- **Quality Rating**: Get a plain-language rating of your connection (Excellent, Good, Fair, Poor, Bad)
- **Test History**: View your last 50 speed test results with detailed breakdowns
- **Multi-Language**: Full support for English, German, French, Turkish, and Spanish
- **Ad-Free Option**: One-time purchase to remove all advertisements

### 1.3 Navigation
The app has main sections:
- **Home / Speed Test**: Run speed tests and see your results with quality explanations
- **History**: View past speed test results and track your connection over time
- **Settings**: Language selection, ad removal purchase, restore purchases, and legal information

## 2. Speed Test Guide

### 2.1 How to Run a Speed Test
1. Open the app and tap the **Start Test** button
2. The app will automatically measure:
   - **Download Speed** (Mbps) - How fast data comes to your device
   - **Upload Speed** (Mbps) - How fast data goes from your device
   - **Ping/Latency** (ms) - How quickly your device communicates with servers
3. Wait for all three measurements to complete
4. View your results with a quality rating and plain-language explanation

### 2.2 Understanding Your Results

**Quality Ratings:**

| Rating | Download Speed | What It Means |
|--------|---------------|---------------|
| Excellent | 50+ Mbps | Great for 4K streaming, large downloads, video calls |
| Good | 25-50 Mbps | Handles most activities smoothly |
| Fair | 10-25 Mbps | Adequate for basic browsing and standard streaming |
| Poor | 5-10 Mbps | May struggle with video streaming and large downloads |
| Bad | Below 5 Mbps | Limited functionality, slow loading times |

**Ping/Latency:**
- Under 20ms: Excellent (great for gaming and video calls)
- 20-50ms: Good (smooth for most activities)
- 50-100ms: Fair (noticeable delay in real-time activities)
- Over 100ms: Poor (significant delays)

### 2.3 Best Practices for Accurate Results

**For Optimal Measurements:**
- Close other apps that may be using your internet connection
- Move closer to your Wi-Fi router if testing Wi-Fi
- Run multiple tests at different times of day for a complete picture
- Ensure no large downloads or uploads are running in the background
- Test on both Wi-Fi and cellular to compare connection types

### 2.4 Connection Types
The app automatically detects your connection type:
- **Wi-Fi**: Connected to a wireless network
- **Cellular**: Using mobile data (4G/5G)
- The connection type is shown with each test result

## 3. Test History

### 3.1 Viewing History
- Access your test history from the History section
- View up to 50 recent speed test results
- Each entry shows download, upload, ping, connection type, and quality rating
- Results are stored locally on your device

### 3.2 History Management
- History is automatically managed -- the app keeps your 50 most recent tests
- Older results are automatically removed when new tests are added
- Uninstalling the app will permanently delete all history

## 4. Ad Removal Purchase

### 4.1 What You Get
Purchasing ad removal provides:
- **No Advertisements**: Complete removal of all interstitial ads
- **No Reminder Notifications**: Re-engagement notifications are disabled
- **Lifetime Access**: One-time purchase, no recurring charges

### 4.2 How to Purchase
1. Go to **Settings**
2. Tap **Remove Ads**
3. Confirm the purchase through the App Store or Google Play
4. Ads will be removed immediately

### 4.3 Restoring Your Purchase
If you reinstall the app or switch devices:
1. Go to **Settings**
2. Tap **Restore Purchases**
3. Your ad removal will be restored automatically

### 4.4 Purchase Issues
If you experience problems:
1. Ensure you're signed in with the same Apple ID or Google account used for the original purchase
2. Check your internet connection
3. Try the "Restore Purchases" option
4. Restart the app
5. Contact support@nextline.software with your purchase details

## 5. Language Settings

### 5.1 Supported Languages
- English
- German (Deutsch)
- French (Français)
- Turkish (Türkçe)
- Spanish (Español)

### 5.2 Changing Language
1. Go to **Settings**
2. Select your preferred language
3. The app will update immediately to the selected language

## 6. Privacy and Data Information

### 6.1 What Data We Collect
**Speed Test Data:**
- Test results are stored locally on your device only
- No speed test data is uploaded to our servers
- Your IP address is exposed to speed test servers during testing (this is inherent to network measurement)

**Analytics:**
- Anonymous usage patterns to improve the app experience
- Crash reports to fix technical issues
- No personally identifiable information is collected

### 6.2 Data Security
**Local Storage:**
- All app data stays on your device
- No account creation required (no sign-in needed)
- No personal information collected (no name, email, or phone number)

**Network Security:**
- Analytics and crash data use secure HTTPS connections
- Anonymous user identification only

### 6.3 Your Choices
- Disable notifications in device settings
- Manage ad tracking preferences in iOS Settings > Privacy > Tracking
- Purchase ad removal to eliminate all ad-related data collection
- Uninstall the app to stop all data collection and remove local data

## 7. Common Issues and Solutions

### 7.1 Speed Test Issues

**Test Not Starting:**
1. Check your internet connection (Wi-Fi or cellular)
2. Try toggling airplane mode on and off
3. Restart the app
4. Restart your device if the issue persists

**Results Seem Inaccurate:**
1. Close other apps using internet bandwidth
2. Move closer to your Wi-Fi router
3. Run multiple tests at different times
4. Test on a different network for comparison
5. Remember that results naturally vary based on network conditions

**Test Takes Too Long:**
1. You may have a very slow connection -- the test needs time to measure accurately
2. Check if your connection is working at all by opening a website
3. Try again later when network conditions may be better

### 7.2 Purchase Issues

**Ad Removal Not Activating:**
1. Verify payment was processed in App Store/Google Play
2. Restart the app to refresh purchase status
3. Check your internet connection
4. Try the "Restore Purchases" option in Settings
5. Contact support if the issue persists

### 7.3 Notification Issues

**Receiving Unwanted Notifications:**
1. Disable notifications in your device settings
2. Purchasing ad removal also disables reminder notifications

**Not Receiving Notifications:**
1. Check notification permissions in your device settings
2. Ensure notifications are not silenced or in Focus mode (iOS)

### 7.4 Performance Issues

**App Running Slowly:**
1. Close other apps running in the background
2. Restart your device
3. Ensure adequate storage space is available
4. Update to the latest app version

**Crashes or Freezing:**
1. Update to the latest version from the App Store
2. Restart your device
3. Reinstall the app if problems persist (note: test history will be lost)

## 8. Contact and Feedback

### 8.1 Customer Support
**Email Support:** support@nextline.software

**When Contacting Support:**
- Include your device type and OS version
- Describe the issue in detail
- Include the app version number (found in Settings)
- Attach screenshots if helpful

### 8.2 Feedback and Suggestions
We welcome feedback to improve the app:
- Report speed test issues or inaccurate results
- Suggest new features or improvements
- Report technical bugs or issues

### 8.3 App Store Reviews
Your App Store reviews help other users discover the app:
- Share your experience with speed testing accuracy
- Contact support first for issues before leaving negative reviews
- We appreciate detailed feedback about your experience

## 9. App Information

### 9.1 Updates
- Regular updates improve testing accuracy and add new features
- Enable automatic updates for the best experience
- Update notes are available in the App Store/Google Play

### 9.2 Compatibility
**Minimum Requirements:**
- iOS 14.0 or later / Android 8.0 or later
- Active internet connection for speed tests
- At least 50MB available storage space

### 9.3 Internet Requirement
Internet Speed Tester requires an active internet connection for:
- Running speed tests (download, upload, and ping measurements)
- Verifying ad removal purchases
- Sending crash reports and analytics

Offline functionality is limited to viewing previously stored test history.

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## Need More Help?

If this support guide doesn't answer your question, please contact our support team at **support@nextline.software**. We're here to help you get the most out of Internet Speed Tester!

Thank you for using Internet Speed Tester!