Comparison

Diamond tester º vs RBX Guess

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

Head to head
About

Diamond tester º

Quickly assess if a stone might be a real diamond using your device's sensors. Get instant feedback without needing tools or experience, ideal for buyers, sellers, or the simply curious.

Highlights
  • Test diamonds in seconds
  • Simple and intuitive interface
  • No technical knowledge needed
  • Uses device sensors for analysis
  • Fast and clear results
  • No account or data collection required
Features
Read full description

Diamond Tester is the easiest way to check if a stone could be a real diamond. With Diamond Tester, you can quickly test diamonds using your device’s sensors and get instant feedback. Whether you’re buying, selling, or just curious, Diamond Tester gives you a fast and simple way to evaluate stones anywhere. No tools. No experience. Just open Diamond Tester and start testing. Why use Diamond Tester: • Test diamonds in seconds • Simple and intuitive experience • No technical knowledge required • Designed for real-world use Diamond Tester is perfect for: • Jewelry buyers who want to avoid fake diamonds • People buying second-hand items • Collectors and enthusiasts • Anyone who wants to test diamonds بسهولة How Diamond Tester works: • Place your device near the stone • Start the test inside Diamond Tester • Analyze the result instantly Diamond Tester uses your device’s sensors to detect environmental and magnetic responses. Since real diamonds are not magnetic, Diamond Tester helps you quickly identify materials that may not be genuine. What you get with Diamond Tester: • Fast diamond testing • Clear and simple results • Smooth and responsive interface • A focused experience with no distractions Diamond Tester is designed to be quick, practical, and easy to use in real situations. No account required. No unnecessary data collection. Just open Diamond Tester and start testing. Eula: https://eula-akfp.vercel.app/diamond Privacy policy: https://www.termsfeed.com/live/0ccf6f12-1125-4aec-903e-2c9861c05159

About

RBX Guess

Test your knowledge of popular games by matching icons to their correct names within a time limit. Progress through levels by answering questions correctly, with a variety of games featured across multiple stages. Enjoy a visually engaging experience with smooth animations and feedback.

Highlights
  • Match game icons to names
  • 30-second timer per question
  • Level progression system
  • 50 games across 10 levels
  • Visually engaging animations
  • Supports 49 languages
Features
Read full description

Think you know your favorite games? Prove it — before the clock runs out. RBX Guess shows you a game icon and three possible names. You have 30 seconds to tap the right answer. Get 3 out of 5 correct to level up. Miss too many and you're stuck until you get it right. HOW TO PLAY - A game icon appears on screen - Three names are dealt out on cards — only one is correct - Tap your answer before the 30-second timer runs out - Get at least 3 right to advance to the next level 50 GAMES ACROSS 10 LEVELS Each level tests you on a different set of 5 games. From Adopt Me! and Blox Fruits to Murder Mystery 2 and BedWars — the lineup covers fan favorites, trending hits, and deep cuts that only real experts will recognize. Clear all 10 levels and the cycle starts again. BEAT THE CLOCK A countdown bar ticks down on every question. It starts green, shifts to gold as time gets short, and turns red in the final seconds. If time runs out, you lose the question. DESIGNED TO FEEL GREAT Smooth card-dealing animations, full-screen flashes on every answer, confetti when you level up, screen shake when you get one wrong, and haptic feedback you can feel on every tap. DISCLAIMER This app is not affiliated with, endorsed by, or sponsored by Roblox Corporation. All trademarks, logos, and brand names are the property of their respective owners. PLAY IN YOUR LANGUAGE Available in 49 languages including English, Spanish, French, Portuguese, German, Japanese, Korean, Chinese, Arabic, Hindi, and many more. No account needed. Just open and play.

Screenshots

Diamond tester º4 screens
RBX Guess4 screens

Verdict

The call

The clearest difference is rating: RBX Guess at 4.5 against Diamond tester º's 3.8. RBX Guess also leads on in-app purchases (none vs 2) and ratings volume (12K vs 4). Diamond tester º's advantage is ads (none vs shown). On price, update cadence, device support and iOS requirement 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. Diamond tester º sells 2 in-app purchases, starting at $2.99 per 7 days. RBX Guess asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

RBX Guess holds the better App Store score, 4.5 against 3.8. That said, the two scores are not equally well evidenced: RBX Guess has 12K ratings behind it against 4, so its average is the more settled of the two.

UpkeepUpdate frequency

Diamond tester º ships an update fortnightly, RBX Guess weekly. The most recent releases landed on November 5, 2026 and November 8, 2026 respectively.

Scorecard5 real differences · 5 level
Diamond tester º versus RBX Guess: the parameters behind the verdict, then further details
ParameterDiamond tester ºRBX Guess
PriceFreeFree
Rating3.8 (4 ratings)4.5 (12K ratings) — better
Positive reviews—56.3% of reviews
Number of ratings412K — better
Update frequencyFortnightlyWeekly — better
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesAd-supported — better
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.1 — better16.0
Further details — not scored
Size65 MB46 MB
Age rating4+4+
DeveloperAlberto SotoLYDIA LLC

Customer experience

Diamond tester º

All ratings4 ratings
Positive75.0%
Neutral0.0%
Negative25.0%

RBX Guess

All ratings10,906 ratings
Positive87.0%
Neutral3.8%
Negative9.1%
Written reviews430 reviews
Positive56.3%
Neutral9.1%
Negative34.7%

In-app purchases

2 purchases

Diamond tester º

Subscriptions1
  • Week subscription3 Days trial$2.997 Days
One-time1
  • Lifetime$19.99
None

RBX Guess

No in-app purchases

Questions

Is Diamond tester º free?
Diamond tester º is free to download, with in-app purchases available.
Is RBX Guess free?
RBX Guess is free to download, with no in-app purchases.
Which has better reviews, Diamond tester º or RBX Guess?
RBX Guess is rated higher. Diamond tester º averages 3.8 out of 5 from 4 ratings, while RBX Guess averages 4.5 from 12K ratings.
Do Diamond tester º or RBX Guess have ads?
RBX Guess shows ads; Diamond tester º does not.
Which is updated more often, Diamond tester º or RBX Guess?
Diamond tester º ships an update fortnightly, and RBX Guess weekly. Most recently, Diamond tester º was updated on November 5, 2026 and RBX Guess on November 8, 2026.

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