Comparison

Random Number Generator. RNG vs Kairos

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

Head to head
About

Random Number Generator. RNG

This app provides a versatile tool for generating random numbers, letters, and making decisions. It offers various randomization features like dice rolling, coin flipping, and custom list selection. Users can also utilize widgets and Apple Watch integration for quick access to random outcomes.

Highlights
  • Number generator (0-999999999)
  • Letter generator
  • Dice roller
  • Custom list item generator
  • Coin flipper
  • Rock-Paper-Scissors
  • Widgets and Apple Watch support
Features
Read full description

Random is a simple, powerful random generator for everyday decisions, games, raffles, classrooms, testing, and quick picks. Need a number? Rolling dice? Choosing from a list? Flipping a coin? Let Random decide. Generators: • Number generator • Letter generator • Dice roller • List picker • Yes or No • Coin flipper • Card generator • Rock Paper Scissors • Random map point • Color generator • Date & time generator Presets Save your favorite generator settings as presets and reuse them anytime. Presets work across the app, widgets, Shortcuts, and Apple Watch, so your most-used randomizers are always close. Widgets Add Random widgets to your Home Screen and generate results without opening the app. Use standard widgets for quick generators or preset widgets for your saved setups. Shortcuts Run supported generators and saved presets from Apple Shortcuts for faster workflows and automation. Apple Watch Use Random on Apple Watch to generate numbers, dice, coins, cards, lists, and more from your wrist. History View recent results in one shared Recent screen. Filter by generator and manage history when you want a clean start. Fast Controls Generate new results by tapping the randomize button, pressing the Spacebar on an external keyboard, or shaking your device. Touch and hold results to copy, clear, or manage them with context menus. Random Premium Upgrade to Random Premium to unlock more powerful features: • Save and run custom presets • Import lists from files or paste from the clipboard • Sync your data across devices • Customize app tints and icons • Support indie development Subscription Information Random Premium may be available as weekly, monthly, annual, or lifetime access depending on available offers. Payment will be charged to your Apple ID account at confirmation of purchase. Subscriptions automatically renew unless canceled at least 24 hours before the end of the current period. You can manage or cancel subscriptions in your App Store account settings. Prices and available plans are shown in the app before purchase. Terms & Conditions: https://yahenskyi.dev/terms-conditions/ Privacy Policy: https://yahenskyi.dev/privacy-policy/

About

Kairos

Features
Read full description

Most timers tell you exactly when they end. Kairos does not. Set a minimum and maximum duration, start the timer, and Kairos chooses a random moment in between. You know the range. You do not know the exact finish. That simple twist makes Kairos useful anywhere timing should stay unpredictable. USE KAIROS FOR - Meditation: sit without watching the clock - Exercise: hold effort without bracing for the last seconds - Study sessions: add flexible focus or break intervals - Interval training: Auto Repeat randomises every set so you never anticipate the next round - Party games: perfect for Hot Potato, Musical Chairs, and other pass-it-fast games FEATURES - Random timer between your chosen minimum and maximum - Clean countdown interface designed for iPhone - Hide Time Display for a more focused, less predictable experience - Auto Repeat, Overtime, and Auto Stop modes after the timer ends - Label your timers for quick recognition in Recents - Choice of built-in alarm sounds - Haptic feedback when time is up - Recents for quickly restarting favorite timer setups - Light, Dark, and System theme - No ads or sign-up required Kairos is built for the moments when exact timing gets in the way and a little uncertainty makes the experience better.

Screenshots

Random Number Generator. RNG4 screens
Kairos4 screens

Verdict

The call

The clearest difference is in-app purchases: Kairos at none against Random Number Generator. RNG's 10. Kairos also leads on update cadence (every 4 days vs fortnightly) and iOS requirement (15.1 vs 17.0). Random Number Generator. RNG's advantage is device support (4 vs 2). On price and ads 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 Number Generator. RNG sells 10 in-app purchases, starting at $2.99 per month. Kairos asks for nothing beyond the download.

UpkeepUpdate frequency

Random Number Generator. RNG ships an update fortnightly, Kairos every 4 days. The most recent releases landed on October 24, 2026 and October 19, 2026 respectively.

Scorecard4 real differences · 6 level
Random Number Generator. RNG versus Kairos: the parameters behind the verdict, then further details
ParameterRandom Number Generator. RNGKairos
PriceFreeFree
Rating4.6 (3.3K ratings) — better—
Positive reviews60.6% of reviews—
Number of ratings3.3K — better—
Update frequencyFortnightlyEvery 4 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhone, iPad, Mac, Apple Watch — betteriPhone, iPod
Requires iOS17.015.1 — better
Further details — not scored
Size59 MB36 MB
Age rating4+4+
DeveloperVolodymyr YahenskyiBenno Kohrs

In-app purchases

10 purchases

Random Number Generator. RNG

Subscriptions7
  • Monthly plan3 Days trial$2.991 Month
  • Monthly plan$2.991 Month
  • Monthly plan$4.991 Month
Show 4 more
  • Weekly plan$4.997 Days
  • Annual plan7 Days trial$19.991 Year
  • Yearly plan7 Days trial$29.991 Year
  • Annual plan$29.991 Year
One-time3
  • Remove ads$4.99
  • Lifetime. One-time purchase$35.99
  • Lifetime plan$59.99
None

Kairos

No in-app purchases

Questions

Is Random Number Generator. RNG free?
Random Number Generator. RNG is free to download, with in-app purchases available.
Is Kairos free?
Kairos is free to download, with no in-app purchases.
Do Random Number Generator. RNG or Kairos have ads?
Neither Random Number Generator. RNG nor Kairos shows ads.
Which is updated more often, Random Number Generator. RNG or Kairos?
Random Number Generator. RNG ships an update fortnightly, and Kairos every 4 days. Most recently, Random Number Generator. RNG was updated on October 24, 2026 and Kairos on October 19, 2026.

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