RANDOM.ORG vs Randomizer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RANDOM.ORG
Generate certified true random numbers and use various randomizing tools. This app provides a coin flipper, dice roller, card shuffler, lotto quick pick, integer generator, and list randomizer, all powered by atmospheric noise for high-quality randomness.
- Certified true randomness
- Coin flipper
- Dice roller
- Card shuffler
- Lotto quick pick
- Integer generator
- List randomizer
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All randomness wasn't created equal. This app offers certified true randomness, generated with atmospheric noise and independently approved by several testing labs. (See sample certificate from eCOGRA.) You can use our randomizers for free and without ads in this official app. If you would like to support our free services, you can do so by making a donation through our website: https://www.random.org/donate - Coin Flipper with 100 different coins from Ancient Rome to 27 modern currencies - Dice Roller to roll up to six regular dice in one go - Card Shuffler to shuffle playing cards and draw them one at a time - Lotto Quick Pick with more than 170 lotteries from all around the world - Integer Generator to generate true random numbers in configurable intervals - List Randomizer to create and randomize your own lists of items RANDOM.ORG was founded in 1998 and generates certified true randomness from atmospheric noise, which for many purposes is better than the pseudo-random numbers typically used in computer programs. Our mission is the generate the highest quality true randomness and make it available to the world in useful forms.
Randomizer
Easily randomize any list of options or numbers to get instant results. Offers advanced features like speech output, slideshows, and session management. Save, sync, and share your randomized lists across devices.
- Save and store multiple lists
- Sync lists across devices via iCloud
- Share results, lists, or all lists
- Integrate with App Intents and Shortcuts
- Import lists from CSV and other formats
- Advanced randomization settings
- Full iOS support including Dark Mode and VoiceOver
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Randomizer allows you to take any list of options or numbers and get an instant random result. With advanced features available for speech, slideshows, sessions, sharing and more. Features: • Save Lists - Store multiple lists and quickly choose which to randomize (Pro Only) • iCloud Sync - Sync all your lists across multiple devices including Mac (Pro Only) • Share - Show your friends any result, list or all of your lists using the share sheet or drag and drop • App Intents & Shortcuts - Use Shortcuts to Randomize Lists • Import - Extensive import options using CSV, comma, pipe or new line delimited lists (Pro Only) • Advanced Settings - Randomize the entire list, speak the result, cycle through automatically with a time interval and many more features. (Pro Only) • Full iOS Support - Dark Mode, Split Screen, Keyboard Shortcuts, VoiceOver and much more • Privacy - No data is ever stored outside of your device and with no tracking or analytics • Pay Once - No ads or subscriptions, just regular free updates with Randomizer Pro Also available as a separate download for Mac.
Screenshots
Verdict
The clearest difference is monetization model: RANDOM.ORG at free against Randomizer's free with in-app purchases. RANDOM.ORG also leads on ratings volume (1.3K vs 270). Randomizer's advantage is review sentiment (81% vs 59%) and update cadence (every 5 weeks vs every 3 months). On price, rating, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. RANDOM.ORG sells 6 one-off in-app purchases and Randomizer sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 4.6 for RANDOM.ORG against 4.6 for Randomizer. Both are backed by a comparable volume of ratings — 1.3K and 270 respectively. Written reviews are what separate them: 59% of RANDOM.ORG's written reviews are positive against 81% of Randomizer's.
RANDOM.ORG ships an update every 3 months, Randomizer every 5 weeks. The most recent releases landed on September 26, 2026 and September 29, 2026 respectively.
| Parameter | RANDOM.ORG | Randomizer |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (1.3K ratings) | 4.6 (270 ratings) |
| Positive reviews | 59.2% of reviews | 80.9% of reviews — better |
| Number of ratings | 1.3K — better | 270 |
| Update frequency | Every 3 months | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 14 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | RANDOM.ORG | Rob Sammons |
Customer experience
RANDOM.ORG
Randomizer
User reviews
RANDOM.ORG
From 1.3K App Store ratingsWhat we love
- 🚀 Truly random
- 👍 Reliable and trustworthy
- 🚀 Convenient and easy to use
- 💡 Useful for various applications (music practice, gaming, decision-making)
Room to improve
- 💰 Paid features required for full functionality
- 🐛 Occasional crashes or bugs
- 🔍 Limited customization options
- 🔍 Lack of offline functionality
Randomizer
From 270 App Store ratingsWhat we love
- 👍 Simple and intuitive user interface
- 🚀 Fast and responsive performance
- 💾 Ability to save and manage multiple lists
- 🎨 Customizable color options
- 📥 Import/export functionality (CSV, Excel)
Room to improve
- 🐛 Items randomly disappear from lists
- 🐛 Poor randomization algorithm (repeats items too frequently)
- ❌ No auto-save functionality
- ❌ Difficult list management and navigation
- ❌ Limited editing capabilities for list items
Bugs and requests
RANDOM.ORG
Reported bugs
3 issues- Random number generation issues (repeating numbers, inconsistent behavior)
- Compatibility problems with newer iOS versions
- Crashes when using certain features
Requested features
5 requests- Ability to paste long lists for randomization
- Support for multiple types of dice and dice rolling
- Customizable default settings
- Offline mode or local data storage
- Improved list management (sorting, reordering, etc.)
Randomizer
Reported bugs
10 issues- Items disappear from lists without explanation
- Poor randomization algorithm repeats items excessively
- Text clears when attempting to correct spelling mid-entry
- Lists not auto-saving when switching apps
- iPad modal window doesn't cover full screen
Show 5 moreShow fewer
- Duplicate lists created after randomizing
- iOS 15 compatibility issues (now fixed)
- Second item missing from two-item lists
- Randomization bias toward recently added items
- List items truncated in edit view making them hard to identify
Requested features
21 requests- Keyword search within lists
- Ignore 'the' article in alphabetical ordering
- Quick save button for edits without overwriting
- Combine and randomize multiple lists simultaneously
- Default to 'Your Lists' screen on app launch
Show 16 moreShow fewer
- Randomization sessions (pick each item once before repeating)
- Multiple results from single randomize action
- Smaller font size options when creating lists
- Add images to list items
- Quick jump between lists
- Apple Watch support
- Handsfree/voice-activated mode for training
- Find/search feature for large lists
- Duplicate item detection
- Export list option (missing in recent update)
- Ability to name and organize lists in folders
- Reorder items within lists
- View randomized list layout all at once
- Larger, more obvious randomize button
- Chart/analytics of randomization results
- Undo/back button for chained selections
In-app purchases
RANDOM.ORG
- Card Shuffler$0.99
- Integer Generator$0.99
- Dice Roller$0.99
Show 3 moreShow fewer
- List Randomizer$0.99
- Lotto Quick Pick$0.99
- All Randomizers$2.99
Randomizer
- Randomizer Pro$1.99
Questions
Is RANDOM.ORG free?
Is Randomizer free?
Which has better reviews, RANDOM.ORG or Randomizer?
Do RANDOM.ORG or Randomizer have ads?
Which is updated more often, RANDOM.ORG or Randomizer?
Other comparisons
