Comparison

RANDOM.ORG vs RandLetter

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Certified true randomness
  • Coin flipper
  • Dice roller
  • Card shuffler
  • Lotto quick pick
  • Integer generator
  • List randomizer
Features
Read full description

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.

About

RandLetter

Generate random letters for games or creative writing. This utility allows you to exclude specific letters and includes a countdown timer for gameplay.

Highlights
  • Random letter generation
  • Blacklist letters
  • Countdown timer
  • Kennedy Games support
  • Name generation
Features
Read full description

RandLetter is a simple app that generates random letters. It is perfect for Kennedy Games, writing names or whenever you need a random letter. The app gives you the opportunity to blacklist selected letters. It also contains a timer to count down when you are playing games.

Screenshots

RANDOM.ORG4 screens
RandLetter3 screens

Verdict

The call

The clearest difference is in-app purchases: RandLetter at none against RANDOM.ORG's 6. RandLetter also leads on rating (5.0 vs 4.6) and review sentiment (80% vs 59%). RANDOM.ORG's advantage is update cadence (every 3 months vs every 16 months) and ratings volume (1.3K vs 3). On price, ads, monetization model and device support 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. RANDOM.ORG sells 6 one-off in-app purchases. RandLetter asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

RandLetter holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: RANDOM.ORG has 1.3K ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 59% of RANDOM.ORG's written reviews are positive against 80% of RandLetter's.

UpkeepUpdate frequency

RANDOM.ORG ships an update every 3 months, RandLetter every 16 months. The most recent releases landed on September 26, 2026 and June 1, 2026 respectively.

Scorecard5 real differences · 5 level
RANDOM.ORG versus RandLetter: the parameters behind the verdict, then further details
ParameterRANDOM.ORGRandLetter
PriceFreeFree
Rating4.6 (1.3K ratings)5.0 (3 ratings) — better
Positive reviews59.2% of reviews80.0% of reviews — better
Number of ratings1.3K — better3
Update frequencyEvery 3 months — betterEvery 16 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.014.6 — better
Further details — not scored
Size14 MB4 MB
Age rating4+4+
DeveloperRANDOM.ORGInmitto AS

Customer experience

RANDOM.ORG

All ratings1,336 ratings
Positive91.1%
Neutral2.3%
Negative6.6%
Written reviews130 reviews
Positive59.2%
Neutral8.5%
Negative32.3%

RandLetter

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews5 reviews
Positive80.0%
Neutral20.0%
Negative0.0%

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.)

RandLetter

Not enough reviews yet to summarise bugs or requests.

In-app purchases

6 purchases

RANDOM.ORG

One-time6
  • Card Shuffler$0.99
  • Integer Generator$0.99
  • Dice Roller$0.99
Show 3 more
  • List Randomizer$0.99
  • Lotto Quick Pick$0.99
  • All Randomizers$2.99
None

RandLetter

No in-app purchases

Questions

Is RANDOM.ORG free?
RANDOM.ORG is free to download, with in-app purchases available.
Is RandLetter free?
RandLetter is free to download, with no in-app purchases.
Which has better reviews, RANDOM.ORG or RandLetter?
RandLetter is rated higher. RANDOM.ORG averages 4.6 out of 5 from 1.3K ratings, while RandLetter averages 5.0 from 3 ratings.
Do RANDOM.ORG or RandLetter have ads?
Neither RANDOM.ORG nor RandLetter shows ads.
Which is updated more often, RANDOM.ORG or RandLetter?
RANDOM.ORG ships an update every 3 months, and RandLetter every 16 months. Most recently, RANDOM.ORG was updated on September 26, 2026 and RandLetter on June 1, 2026.

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