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Flip a coin - Official FlipACoinFree logo and coin symbolFlipACoin Free
\n\n```\n\n**Customization options:**\n- Custom coin designs (upload your own images)\n- Theme (light/dark/auto)\n- Size (small, medium, large, or custom dimensions)\n- Show/hide statistics\n- Enable/disable sound\n- Button colors and styling\n- Language selection\n\n**What's included:**\n✅ Fully responsive (works on mobile)\n✅ No ads, no watermark\n✅ Completely free\n✅ Works on WordPress, Blogger, Wix, Squarespace\n✅ No API key required\n✅ Privacy-friendly (no tracking)\n\n**Popular use cases:**\n- Educational websites (teaching probability)\n- Game websites (random team selection)\n- Decision-making tools\n- Sports blogs\n- Interactive articles\n\n**Analytics:**\nWe provide basic analytics (total flips, heads/tails ratio) for embed widget users. Visit our [Embed page](/embed) to get your custom code and see real-time examples!\n\n**WordPress plugin:** Coming soon! We're developing a one-click WordPress plugin for even easier integration."}},{"@type":"Question","name":"What programming languages can I use with your API?","acceptedAnswer":{"@type":"Answer","text":"Our API is **language-agnostic** and works with any language that can make HTTP requests! Here are examples:\n\n**JavaScript/Node.js:**\n```javascript\n// Using fetch\nconst response = await fetch('https://flipacoinfree.com/api/flip');\nconst { result } = await response.json();\n\n// Using axios\nconst axios = require('axios');\nconst { data } = await axios.get('https://flipacoinfree.com/api/flip');\nconsole.log(data.result); // \"heads\" or \"tails\"\n```\n\n**Python:**\n```python\nimport requests\n\nresponse = requests.get('https://flipacoinfree.com/api/flip')\ndata = response.json()\nprint(data['result']) # \"heads\" or \"tails\"\n\n# Multiple flips\nresponse = requests.get('https://flipacoinfree.com/api/flip?count=100')\nresults = response.json()['results']\n```\n\n**PHP:**\n```php\n\n```\n\n**Ruby:**\n```ruby\nrequire 'net/http'\nrequire 'json'\n\nuri = URI('https://flipacoinfree.com/api/flip')\nresponse = Net::HTTP.get(uri)\ndata = JSON.parse(response)\nputs data['result']\n```\n\n**Java:**\n```java\nimport java.net.http.*;\n\nHttpClient client = HttpClient.newHttpClient();\nHttpRequest request = HttpRequest.newBuilder()\n .uri(URI.create(\"https://flipacoinfree.com/api/flip\"))\n .build();\n \nHttpResponse response = client.send(request, \n HttpResponse.BodyHandlers.ofString());\n```\n\n**Go:**\n```go\nimport (\n \"net/http\"\n \"encoding/json\"\n)\n\nresp, _ := http.Get(\"https://flipacoinfree.com/api/flip\")\nvar data map[string]string\njson.NewDecoder(resp.Body).Decode(&data)\nfmt.Println(data[\"result\"])\n```\n\n**cURL (command line):**\n```bash\ncurl https://flipacoinfree.com/api/flip\n```\n\n**We also provide official SDKs for:**\n- JavaScript/TypeScript (npm package)\n- Python (pip package)\n- PHP (Composer package)\n\nDownload our SDKs from our [API Documentation](/api-docs) page for even easier integration with built-in error handling, rate limiting, and retry logic!"}},{"@type":"Question","name":"How do I quickly flip a coin online?","acceptedAnswer":{"@type":"Answer","text":"Flipping a coin online with our tool is incredibly simple—it takes less than 1 second!\n\n**Quick flip methods:**\n\n**Method 1: One-Click Flip**\n1. Visit flipacoinfree.com\n2. Click the coin or \"Flip\" button\n3. Instant result!\n\n**Method 2: Keyboard Shortcut**\n- Press **Spacebar** to flip instantly\n- Perfect for rapid decisions\n\n**Method 3: Voice Control (coming soon)**\n- Say \"flip coin\" to activate\n- Hands-free coin flipping\n\n**For mobile users:**\n- Add to home screen for instant access\n- Works offline after first load\n- Tap the coin to flip\n\n**Advanced quick features:**\n- **Multi-flip:** Enter a number (e.g., 100) and get all results instantly\n- **Weighted flip:** Adjust probability slider for biased outcomes\n- **Custom coin:** Quick presets for dollar, euro, rupee coins\n- **API:** Integrate into your app with one line of code\n\n**Faster than:**\n- Searching \"flip a coin\" on Google (saves 3-5 seconds)\n- Finding a physical coin\n- Voice assistants (Alexa/Siri take 2-3 seconds to respond)\n- Opening a mobile app (no download required)\n\n**Pro tip:** Bookmark our site or add to your phone's home screen for instant access anytime. No ads, no delays—just pure coin-flipping speed!"}},{"@type":"Question","name":"What is the weighted coin simulator?","acceptedAnswer":{"@type":"Answer","text":"Our **weighted coin simulator** lets you adjust the probability of heads vs. tails—perfect for education, simulations, and teaching probability concepts!\n\n**How it works:**\n1. Go to the \"Weighted Coin\" tab\n2. Adjust the probability slider (0-100%)\n3. Flip the coin\n4. The outcome respects your custom probability\n\n**Example probabilities:**\n- **50%:** Fair coin (default)\n- **70% heads:** Heads comes up 70% of the time\n- **90% tails:** Tails heavily favored\n- **10% heads:** Tails strongly biased\n\n**Educational use cases:**\n\n**Teaching probability:**\n- Show students how bias affects outcomes\n- Compare theoretical vs. actual results\n- Demonstrate law of large numbers\n- Explain expected value concepts\n\n**Scientific simulations:**\n- Model real-world biased events\n- Test statistical hypotheses\n- Demonstrate sampling distributions\n- Teach Monte Carlo methods\n\n**Game design:**\n- Create unfair advantages/disadvantages\n- Simulate weighted loot drops\n- Test game balance mechanics\n\n**Real-world modeling:**\n- Medical test accuracy (false positive rates)\n- Weather prediction (70% chance of rain)\n- Manufacturing defect rates\n- Survey response biases\n\n**Verification:**\nUse our multi-flip feature with weighted coins to verify the probability:\n- Set 70% heads\n- Flip 1,000 times\n- Export CSV\n- You'll see ~700 heads, ~300 tails\n\n**Transparency:**\nWe show the exact percentage on screen, so there's no hidden bias. The algorithm uses the same cryptographic randomness as our fair coin, just with adjusted thresholds.\n\nPerfect for teachers, students, researchers, and anyone exploring probability theory!"}},{"@type":"Question","name":"Can I flip a coin to make a decision between more than two options?","acceptedAnswer":{"@type":"Answer","text":"Yes! While a traditional coin is binary (2 options), you can use creative methods for multiple options:\n\n**Method 1: Binary Tree Decision**\nFor 4 options (A, B, C, D):\n- First flip: Heads = A or B, Tails = C or D\n- Second flip determines final choice\n- Works for 4, 8, 16, or any power of 2 options\n\n**Method 2: Multiple Coins**\nFor 3 options:\n- Flip twice\n- HH = Option 1\n- HT = Option 2\n- TH = Option 3\n- TT = Reflip (discard invalid result)\n\n**Method 3: Elimination**\nFor 5 options:\n1. Number your options 1-5\n2. Flip 5 times, one per option\n3. First option to get heads wins\n4. If all tails, reflip\n\n**Method 4: Use Our Multi-Flip**\nFor any number of options:\n1. Assign each option a range (e.g., 1-25, 26-50, 51-75, 76-100)\n2. Flip multiple times (e.g., 100 flips)\n3. Count total heads\n4. See which range it falls into\n\n**Better solution: Use our random picker tool (coming soon!)**\nWe're developing a dedicated tool for multiple options where you can:\n- Enter 3-100 options\n- Get instant random selection\n- Fair probability for each option\n- Save and reuse option lists\n\n**Current workaround:**\nUse our API with multiple requests:\n```javascript\n// For 5 options, flip 3 times (2^3 = 8 possibilities)\nconst flips = await fetch('https://flipacoinfree.com/api/flip?count=3');\nconst { results } = await flips.json();\nconst binary = results.map(r => r === 'heads' ? '1' : '0').join('');\nconst option = parseInt(binary, 2) % 5; // Maps 0-4\n```\n\n**Pro tip:** For simple multiple-choice decisions, just flip once for each option and pick the first heads. It's fair, fast, and fun!"}},{"@type":"Question","name":"Can I use this tool for gambling or betting?","acceptedAnswer":{"@type":"Answer","text":"**No, our tool is strictly for entertainment, education, and casual decision-making—NOT for gambling or betting.**\n\n**Why we prohibit gambling:**\n\n**Legal reasons:**\n- Online gambling is heavily regulated in most countries\n- We don't have gambling licenses\n- Using our tool for betting violates most gambling laws\n- Could expose users to legal liability\n\n**Ethical reasons:**\n- Gambling addiction is a serious problem\n- We don't want to contribute to financial harm\n- Our tool is designed for fun, not profit/loss\n- No verification of user age or gambling restrictions\n\n**Our Terms of Service explicitly forbid:**\n- Using the tool for monetary bets\n- Gambling or wagering real money\n- Operating betting platforms that use our tool\n- Any activity involving financial stakes\n\n**What our tool IS for:**\n✅ Casual decisions (where to eat, which movie to watch)\n✅ Educational purposes (teaching probability)\n✅ Games and entertainment (splitting teams)\n✅ Sports coin tosses (recreational leagues)\n✅ Tie-breaking (board games, office decisions)\n✅ Creative decision-making\n✅ Statistical experiments\n\n**If you have a gambling problem:**\n- 🇺🇸 **USA:** National Council on Problem Gambling: 1-800-522-4700\n- 🇬🇧 **UK:** National Gambling Helpline: 0808 8020 133\n- 🇦🇺 **Australia:** Gambling Help Online: 1800 858 858\n- 🌍 **International:** gamblingtherapy.org\n\n**For regulated gambling:**\nPlease use licensed, legal gambling services in your jurisdiction that offer responsible gaming features, age verification, and support resources.\n\nWe take this seriously—accounts suspected of gambling use may be restricted. Play responsibly and use our tool for fun, not financial risk!"}},{"@type":"Question","name":"Does the coin flip work offline?","acceptedAnswer":{"@type":"Answer","text":"**Yes!** Our tool is a **Progressive Web App (PWA)**, which means it works fully offline after your first visit.\n\n**How to enable offline mode:**\n\n**On mobile (iOS/Android):**\n1. Visit flipacoinfree.com in your browser\n2. Tap the \"Share\" or \"Menu\" button\n3. Select \"Add to Home Screen\"\n4. The app installs and works offline!\n\n**On desktop (Chrome/Edge):**\n1. Visit flipacoinfree.com\n2. Click the install icon in the address bar\n3. Click \"Install\"\n4. Launch anytime from your desktop\n\n**What works offline:**\n✅ Basic coin flipping\n✅ Multi-flip feature\n✅ Custom coin designs (if previously loaded)\n✅ Weighted coin simulator\n✅ Statistics tracking\n✅ Sound effects\n✅ All animations\n\n**What requires internet:**\n❌ API requests\n❌ Embed widget analytics\n❌ Sharing results on social media\n❌ Blog articles\n❌ Random.org integration (optional)\n\n**Technical details:**\n- Uses Service Worker for offline caching\n- Stores critical assets (HTML, CSS, JS, sounds, images)\n- Updates automatically when reconnected\n- Cache size: ~2MB\n\n**Benefits of PWA:**\n- No app store required\n- No download or installation (beyond \"Add to Home Screen\")\n- Automatic updates\n- Works on all devices\n- No permissions required\n- No tracking or data collection\n\n**Perfect for:**\n- Airplane mode\n- Areas with poor connectivity\n- Saving mobile data\n- Quick access without internet\n\n**Fun fact:** We've tested our offline functionality with 1,000+ consecutive flips without internet—it works flawlessly! The randomness algorithm runs entirely in your browser using hardware entropy, so you get genuinely random results even offline."}},{"@type":"Question","name":"Can I customize the coin design?","acceptedAnswer":{"@type":"Answer","text":"**Absolutely!** We offer extensive coin customization options—upload your own images or choose from beautiful presets.\n\n**Preset coin designs:**\n\n**Currency coins:**\n- 💰 **Gold Coin** - Classic shiny gold\n- 🪙 **Silver Coin** - Metallic silver finish\n- 🥉 **Bronze Coin** - Vintage bronze look\n- 🇺🇸 **USA Quarter** - Authentic Washington quarter\n- 🇺🇸 **US Dollar** - Liberty dollar coin\n- 🇪🇺 **Euro Coin** - European Union €1 coin\n- 🇮🇳 **Indian Rupee** - ₹10 Indian coin\n\n**Special designs:**\n- 🎮 **Gaming coin** - Digital pixelated style\n- 🎪 **Carnival token** - Vintage arcade token\n- 🏆 **Championship coin** - Sports referee coin\n- 🎲 **Lucky coin** - Golden lucky charm\n\n**Custom coin upload:**\n1. Go to \"Custom Coin\" tab\n2. Upload heads image (PNG/JPG, max 5MB)\n3. Upload tails image\n4. Coin updates instantly!\n\n**Image requirements:**\n- Format: PNG, JPG, SVG, WebP\n- Size: 500x500px minimum (square)\n- Max file size: 5MB per side\n- Transparent backgrounds supported\n- Circular crop applied automatically\n\n**Use cases for custom coins:**\n\n**Branding:**\n- Company logo on heads\n- Slogan or product on tails\n- Perfect for marketing campaigns\n\n**Education:**\n- True/False questions\n- Yes/No decisions\n- A/B options\n\n**Personal:**\n- Your photo vs. friend's photo\n- Pet pictures\n- Favorite teams/characters\n\n**Events:**\n- Wedding decision-making\n- Party games\n- Corporate team building\n\n**Technical features:**\n- Images stored locally (privacy-first)\n- Works offline after upload\n- Can save as preset for reuse\n- Downloadable for sharing\n\n**Pro tip:** Use high-contrast images with clear differences between heads and tails for the best visual effect. Avoid text smaller than 72pt as it may be hard to read on the spinning coin.\n\n**Coming soon:** Coin design marketplace where you can browse and download community-created coin designs!"}},{"@type":"Question","name":"Can I flip multiple coins at the same time?","acceptedAnswer":{"@type":"Answer","text":"**Yes!** Our multi-flip feature lets you flip anywhere from 2 to 10,000 coins simultaneously.\n\n**How to use multi-flip:**\n\n**Basic usage:**\n1. Enter the number of flips (e.g., 100)\n2. Click \"Flip Multiple\"\n3. Get instant results with statistics\n\n**Instant statistics provided:**\n- Total heads count\n- Total tails count\n- Percentage breakdown\n- Longest streak (heads or tails)\n- Visual distribution chart\n- Flip-by-flip history\n\n**Use cases:**\n\n**Educational:**\n- **Teaching probability:** Show 1,000 flips converge to 50/50\n- **Law of large numbers:** Demonstrate with 10,000 flips\n- **Statistical analysis:** Export to CSV for homework\n- **Binomial distribution:** Visualize bell curve patterns\n\n**Research:**\n- **Hypothesis testing:** Generate large random datasets\n- **Monte Carlo simulations:** Random sampling\n- **Statistical verification:** Test our randomness\n- **Data science projects:** Quick random binary data\n\n**Games & Fun:**\n- **Tournament brackets:** Determine 64 matchups at once\n- **Team selection:** Flip for multiple players simultaneously\n- **Probability bets:** See how often rare events occur\n- **Challenge friends:** Who can predict the heads/tails ratio?\n\n**Practical decisions:**\n- **Multiple yes/no questions:** Flip once per question\n- **Ranked voting:** Eliminate options by successive flips\n- **Resource allocation:** Fair distribution\n\n**Export options:**\n- **CSV format:** Open in Excel/Google Sheets\n- **JSON format:** For developers and programmers\n- **Image export:** Save the statistics chart\n- **Share link:** Send results to others\n\n**Performance:**\n- Flips happen instantly (uses cryptographic batch generation)\n- Can process 10,000 flips in under 100ms\n- Results displayed in easy-to-read format\n- Visual chart shows distribution\n\n**Example results:**\n```\nFlips: 1,000\nHeads: 503 (50.3%)\nTails: 497 (49.7%)\nLongest heads streak: 8\nLongest tails streak: 7\n```\n\n**Pro tip:** For serious statistical analysis, export the CSV and use tools like Excel, Python (pandas), or R for deeper analysis. Our data includes timestamps, sequence numbers, and outcomes for complete reproducibility!"}},{"@type":"Question","name":"How do I export my flip history?","acceptedAnswer":{"@type":"Answer","text":"Exporting your flip history is easy—perfect for analysis, homework, or keeping records!\n\n**How to export:**\n\n**Step 1: Perform flips**\n- Flip coins normally (single or multi-flip)\n- Your history accumulates automatically\n- View in the \"History\" panel\n\n**Step 2: Export**\n- Click \"Export CSV\" button in the history panel\n- Choose export format:\n - **CSV** (Excel/Google Sheets compatible)\n - **JSON** (for developers)\n - **TXT** (plain text)\n\n**Step 3: Save file**\n- File downloads instantly\n- Named with timestamp: `coin_flips_2025-01-24.csv`\n\n**What's included in the export:**\n\n**CSV format:**\n```csv\nFlip Number,Result,Timestamp,Coin Type,Probability\n1,heads,2025-01-24T12:00:00.000Z,standard,0.50\n2,tails,2025-01-24T12:00:01.000Z,standard,0.50\n3,heads,2025-01-24T12:00:02.000Z,standard,0.50\n...\n```\n\n**JSON format:**\n```json\n{\n \"exportDate\": \"2025-01-24T12:00:00.000Z\",\n \"totalFlips\": 1000,\n \"heads\": 503,\n \"tails\": 497,\n \"flips\": [\n {\n \"id\": 1,\n \"result\": \"heads\",\n \"timestamp\": \"2025-01-24T12:00:00.000Z\",\n \"coinType\": \"standard\",\n \"probability\": 0.50\n },\n ...\n ]\n}\n```\n\n**Use cases:**\n\n**Educational:**\n- Submit probability homework\n- Create statistical reports\n- Demonstrate law of large numbers\n- Compare theoretical vs. actual results\n\n**Professional:**\n- Document decision-making processes\n- Audit trail for fair selections\n- Reproducible research data\n- Quality assurance testing\n\n**Personal:**\n- Track decision outcomes over time\n- See if you have \"lucky\" periods\n- Analyze decision-making patterns\n- Share results with friends\n\n**Analysis tips:**\n\n**Excel/Google Sheets:**\n1. Open the CSV file\n2. Use formulas: `=COUNTIF(B:B,\"heads\")`\n3. Create pivot tables\n4. Generate charts\n\n**Python:**\n```python\nimport pandas as pd\ndf = pd.read_csv('coin_flips_2025-01-24.csv')\nprint(df['Result'].value_counts())\n```\n\n**R:**\n```r\ndata <- read.csv('coin_flips_2025-01-24.csv')\ntable(data$Result)\n```\n\n**Privacy note:** All flips are stored **locally in your browser**. Clearing browser data erases history. Export regularly if you want to keep records!\n\n**Pro tip:** For large experiments (10,000+ flips), use the JSON export format—it includes metadata and is easier to process programmatically."}}]}

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