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
This utility app generates random numbers, words, or custom values with flexible settings. Easily create lists, exclude duplicates, and copy results for contests, decision-making, or entertainment.
- Generate random numbers within a range
- Create random words from custom lists
- Input and randomize custom values
- Exclude duplicate results
- Generate multiple random results at once
- Copy generated lists or individual values
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Randomizer is a versatile app for generating random numbers, words, and any custom values! A convenient, flexible, and functional solution for anyone who needs a quick and reliable way to get a random result. App Features: Random Numbers: Generate numbers within a specified range, with an option to exclude duplicates. Random Words: Create word lists and generate one or more random words from them. Custom Values: Add your own unique values and get a random result. Flexible Settings: Option to exclude repeats. Set the number of random results to generate at once. Organized List: All generated values are displayed in a numbered list for easy access. Copy Functionality: Easily copy individual values or the entire list. What can Randomizer be used for? Running contests and giveaways. Making decisions. Creating random workouts or tasks. Games and entertainment. With Randomizer, randomness becomes a simple and convenient tool in your pocket!
Screenshots
Verdict
The clearest difference is ads: RANDOM.ORG at none against Randomizer's shown. RANDOM.ORG also leads on review sentiment (59% vs 25%) and monetization model (free vs free with in-app purchases). Randomizer's advantage is iOS requirement (13.0 vs 15.0). On price, rating, update cadence 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. That said, the two scores are not equally well evidenced: RANDOM.ORG has 1.3K ratings behind it against 20, so its average is the more settled of the two. Written reviews are what separate them: 59% of RANDOM.ORG's written reviews are positive against 25% of Randomizer's.
RANDOM.ORG ships an update every 3 months, Randomizer every 2 months. The most recent releases landed on October 14, 2026 and September 29, 2026 respectively.
| Parameter | RANDOM.ORG | Randomizer |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (1.3K ratings) | 4.6 (20 ratings) |
| Positive reviews | 59.2% of reviews — better | 25.0% of reviews |
| Number of ratings | 1.3K — better | 20 |
| Update frequency | Every 3 months | Every 2 months — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 14 MB | 114 MB |
| Age rating | 4+ | 4+ |
| Developer | RANDOM.ORG | Sergey Irgeshov |
Customer experience
RANDOM.ORG
Randomizer
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
Not enough reviews yet to summarise bugs or requests.
In-app purchases
RANDOM.ORG
- Card Shuffler$0.99
- Integer Generator$0.99
- Dice Roller$0.99
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- List Randomizer$0.99
- Lotto Quick Pick$0.99
- All Randomizers$2.99
Randomizer
- Disable ads$5.99
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
