Comparison

RANDOM.ORG vs 19 Theory

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

19 Theory

This platform helps organizations manage people, communication, and content. It centralizes updates, facilitates group management with role-based access, and allows for engagement through likes and comments. Secure and private, it aims to streamline internal communication and foster collaboration.

Highlights
  • Organized communication
  • Group management
  • Role-based access
  • Content management
  • Customizable notifications
  • Secure and private
Features
Read full description

19 Theory turns a goal into a plan you can follow, fitted to the week you actually have. Someone who teaches builds the curriculum. 19 Theory turns it into your week, and hands you one thing to start today. WHAT IT DOES • Structured plans — week-by-week or day-by-day curricula published by schools, coaching centres and training institutes. Every section is reviewed by a person before a learner can reach it. • One timetable — several plans, one schedule. Say how many hours you have, or name a date to finish by, and the week is built around it. Work that will not fit moves to the next week; it is never dropped. • Today — a queue in time order. Late work first, then what is due, then a way to get ahead, with one thing pulled out to begin. • Modules and quizzes — reading, practice questions and training runs. Keep your place across sessions, and earn a certificate on the ones that offer it. • Study reminders — one notification a day, at a time you choose, naming the day's work. • Up to six learners on one login — for a family, each with their own plans, progress and timetable. FOR TEACHERS AND COMMUNITIES • Publish your own plan, or adopt one another community has already published. • Assign it to a whole group in one action, and set the date the cohort is working to. • See who is behind — per plan and per learner — and coach them through it. WHAT IT WILL NOT DO • It will not guess your pace. Set no weekly hours and it says "your own pace" and counts modules, rather than printing a percentage it cannot stand behind. The plan still runs. • It will not grade your character. No streaks, no scores, no badges. Late work is listed as late and then rescheduled, which is the only useful thing to do with it. • It will not invent a curriculum for you. Plans come from people who teach. AI helps them draft; nothing reaches a learner until a person has reviewed every section of it. Browse plans, modules and quizzes, and read a full curriculum, without an account. An account is only for the part that is yours: your timetable, your progress and your reminders. Questions or feedback: nextgenapps146@gmail.com

Screenshots

RANDOM.ORG4 screens
19 Theory4 screens

Verdict

The call

The clearest difference is in-app purchases: 19 Theory at none against RANDOM.ORG's 6. 19 Theory also leads on update cadence (every 6 days vs every 3 months) and rating (4.8 vs 4.6). RANDOM.ORG's advantage is ratings volume (1.3K vs 6). 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. 19 Theory asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

19 Theory holds the better App Store score, 4.8 against 4.6. That said, the two scores are not equally well evidenced: RANDOM.ORG has 1.3K ratings behind it against 6, so its average is the more settled of the two.

UpkeepUpdate frequency

RANDOM.ORG ships an update every 3 months, 19 Theory every 6 days. The most recent releases landed on October 14, 2026 and October 3, 2026 respectively.

Scorecard4 real differences · 6 level
RANDOM.ORG versus 19 Theory: the parameters behind the verdict, then further details
ParameterRANDOM.ORG19 Theory
PriceFreeFree
Rating4.6 (1.3K ratings)4.8 (6 ratings) — better
Positive reviews59.2% of reviews—
Number of ratings1.3K — better6
Update frequencyEvery 3 monthsEvery 6 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.0 — better15.6
Further details — not scored
Size14 MB38 MB
Age rating4+4+
DeveloperRANDOM.ORGSantosh B

Customer experience

RANDOM.ORG

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

19 Theory

All ratings6 ratings
Positive100.0%
Neutral0.0%
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.)

19 Theory

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

19 Theory

No in-app purchases

Questions

Is RANDOM.ORG free?
RANDOM.ORG is free to download, with in-app purchases available.
Is 19 Theory free?
19 Theory is free to download, with no in-app purchases.
Which has better reviews, RANDOM.ORG or 19 Theory?
19 Theory is rated higher. RANDOM.ORG averages 4.6 out of 5 from 1.3K ratings, while 19 Theory averages 4.8 from 6 ratings.
Do RANDOM.ORG or 19 Theory have ads?
Neither RANDOM.ORG nor 19 Theory shows ads.
Which is updated more often, RANDOM.ORG or 19 Theory?
RANDOM.ORG ships an update every 3 months, and 19 Theory every 6 days. Most recently, RANDOM.ORG was updated on October 14, 2026 and 19 Theory on October 3, 2026.

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