Comparison

Randomizer Pro vs Castora

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

Head to head
About

Randomizer Pro

Features
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One tap, any outcome. Randomizer Pro is the one app for every "I can't decide" moment — pickers for the boring stuff, chance for the fun stuff, and games for when you want company. PICK SOMETHING - Number — any range you set - Code — PINs, OTPs, lock codes - Percent — 0 to 100, to two decimals - String — random passwords and gibberish - Names — draw from your own list, no repeats until everyone's had a turn - Contact — a random person from your address book to text back LEAVE IT TO CHANCE - Dice — roll one or a handful, with a real tumble and bounce - Head or Tail — the oldest tiebreaker there is - Card — draw from a full 52-card deck - Wheel — spin your own options, weighted so it's still fair over time - Photo — surface a random photo or video you forgot you had PLAY THE COMPUTER - Rock Paper Scissors — against an opponent that studies your patterns on-device and gets sharper the more you play - Higher or Lower — same idea: it reads how you call, and the draws get tougher as it learns you - Guess the Number — warmer/colder and higher/lower hints, scored against par like golf PLAY WITH SOMEONE - Truth or Dare — pass-and-play for two, plus room to add your own questions - Reflex Duel — split-screen, fastest thumb wins the round - Who Pays? — settles the bill with a fairness system that remembers who paid last, not just a coin flip PRIVATE BY DESIGN Nothing you type or pick ever leaves your phone. Contacts and Photos are read on-device only. The on-device AI in Rock Paper Scissors and Higher or Lower trains and runs locally — none of your gameplay is ever uploaded anywhere. No account, no sign-in, no tracking your choices. Every screen keeps its own history, so you can see what came up before, settle an argument about whether it's really been fair, and pick up right where you left off. Randomizer Pro. One tap, any outcome.

About

Castora

Features
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Castora — The Ultimate diecast Collection Tracker Every collector knows the feeling: standing in the aisle, phone out, trying to remember if you already have this casting. Castora ends the guesswork. Track your diecast collection and wishlist, browse the complete catalog, and watch your collection come to life with stats, series progress, and daily discoveries — all built for collectors, by a collector. COLLECTION & WISHLIST • Log every car you own with year, series, and Treasure Hunt / Super Treasure Hunt status • Keep a wishlist of cars you're hunting for • Add your own photos. • Filter and sort by year, series, TH/STH status, and more FULL CATALOG • Browse the entire diecast catalog, organized by year and series • See at a glance which cars you own, want, or haven't discovered yet • "Show Primary Variants only" cuts through color-variant clutter STATS THAT MOTIVATE • Track your overall catalog completion percentage • Drill into any year to see TH/STH counts and series breakdowns • Get a celebration the moment you complete a series HOME DASHBOARD • Catalog progress at a glance • Recently added cars, right where you left off • "Almost Complete" shelf surfaces the series you're closest to finishing • Daily "Discover" picks introduce cars you don't own yet SYNC & BACKUP • iCloud sync keeps your collection and settings up to date across all your devices MADE FOR COLLECTORS Castora was built by a diecast collector who wanted a better way to track a growing collection — clean, fast, and focused on what matters: your cars. Start tracking today and turn your collection into a story worth showing off.

Screenshots

Randomizer Pro4 screens
Castora4 screens

Verdict

The call

The clearest difference is update cadence: Castora at daily against Randomizer Pro's every 10 months. Randomizer Pro's advantage is iOS requirement (18.0 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Randomizer Pro ships an update every 10 months, Castora daily. The most recent releases landed on October 27, 2026 and October 29, 2026 respectively.

Scorecard2 real differences Ā· 4 level
Randomizer Pro versus Castora: the parameters behind the verdict, then further details
ParameterRandomizer ProCastora
PriceFreeFree
Update frequencyEvery 10 monthsDaily — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad — betteriPhone
Requires iOS18.0 — better26.0
Further details — not scored
Size7 MB7 MB
Age rating4+4+
DeveloperTROTHMATRIXSaket Kumar

In-app purchases

None

Randomizer Pro

No in-app purchases

None

Castora

No in-app purchases

Questions

Is Randomizer Pro free?
Randomizer Pro is free to download, with no in-app purchases.
Is Castora free?
Castora is free to download, with no in-app purchases.
Do Randomizer Pro or Castora have ads?
Neither Randomizer Pro nor Castora shows ads.
Which is updated more often, Randomizer Pro or Castora?
Randomizer Pro ships an update every 10 months, and Castora daily. Most recently, Randomizer Pro was updated on October 27, 2026 and Castora on October 29, 2026.

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