Comparison

Urban Sandbox vs G3MS

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

Head to head
About

Urban Sandbox

This platform offers expert guidance for parents on common challenges and empowers students to explore their interests and build confidence. It provides resources developed with professionals to foster stronger family connections and student growth.

Highlights
  • Expert-developed parenting guidance
  • Videos and practical strategies for parents
  • Support from Family Support Fellows
  • Student clubs and projects
  • Safe community for students
  • Resources on various child development topics
Features
Read full description

Urban Sandbox: Trusted guidance for parents. Meaningful opportunities for students. Urban Sandbox is a family support platform that helps parents navigate everyday challenges with greater confidence while empowering students to discover who they are and who they can become. Helping parents stay informed, so they can stay connected. For Parents Developed in collaboration with licensed psychologists and education professionals, Urban Sandbox provides expert-informed videos, practical strategies, and research-informed guidance for everyday parenting. Explore topics including bullying, ADHD, friendships, homework, confidence, motivation, emotions, adolescence, and more. Parents can also connect with our trained Family Support Fellows for additional guidance and support. For Students Students can discover their interests, share their voices, and build confidence through clubs, projects, and leadership opportunities in a safe, encouraging community that celebrates every child's unique strengths. Features • Guidance developed with licensed psychologists and education professionals • Expert-informed videos and parent resources • Support from trained Family Support Fellows • Student clubs, projects, and leadership opportunities • Safe and encouraging community Urban Sandbox is a preventive family support platform designed to complement—not replace—professional therapy or medical care. Privacy Policy: https://www.urban-sandbox.com/privacy_policy Terms of Use: https://www.urban-sandbox.com/terms_and_condition

About

G3MS

This app motivates K-12 students to learn by offering daily challenges and AI-powered tutoring. Users can earn real rewards, like gift cards, by building learning streaks and mastering academic skills. Parents and teachers can monitor student progress through a dedicated dashboard.

Highlights
  • Daily learning challenges
  • AI-powered learning guide
  • Flashcards and practice questions
  • Streak-based reward system
  • Student progress tracking
  • Parent and teacher dashboard
Features
Read full description

**Turn Every Day Into a Win** G3MS is where learning meets motivation. Complete The Drop, build unstoppable streaks, and earn real rewards while mastering the skills that matter most. **BUILD STREAKS, EARN REAL REWARDS** Hit your 15-day streak and unlock gift cards from brands you know, including Visa, Mastercard, Wingstop, and more. Every day you show up gets you closer to your next reward. **THE DROP — YOUR DAILY CHALLENGE** Quick, high-impact lessons aligned to what you're learning in school. Watch a video, complete a quiz, earn rewards — all in under 10 minutes. Keep showing up to keep your streak going. **MEET AYO — YOUR AI LEARNING GUIDE** Stuck on a problem? Ask Ayo. Your personal AI learning guide can explain concepts, break down problems, help with homework, practice with you, and test your skills. Get help with math, ELA, test prep, and more whenever you need it. **FLASHCARDS + PRACTICE** Study smarter with thousands of practice questions and flashcards across math, ELA, science, history, and standardized tests including SAT, ACT, SHSAT, SSAT, and ISEE. **PARENTS + TEACHERS: SEE REAL PROGRESS** GrowthOS gives parents, teachers, schools, and districts a clearer picture of student progress — including who's on track, who's at risk, and where additional support may be needed. **WHAT YOU GET FREE:** * Daily Drop challenges * Ayo AI tutor (limited) * Flashcards and practice * Streak tracking * G3MS rewards * Progress tracking **GO PREMIUM FOR $29/MONTH:** * Unlimited Ayo AI tutoring * Advanced math, ELA, science, and history * SAT and ACT test prep * Faster reward earning * Priority rewards access * Ad-free experience Learning isn't about perfection. It's about showing up, building confidence, and getting better every day. **Start your streak. Learn something new. Earn something real.** Terms of Use: [https://www.apple.com/legal/internet-services/itunes/dev/stdeula/](https://www.apple.com/legal/internet-services/itunes/dev/stdeula/)

Screenshots

Urban Sandbox4 screens
G3MS4 screens

Verdict

The call

The clearest difference is rating: Urban Sandbox at 5.0 against G3MS's 4.5. G3MS's advantage is ratings volume (8 vs 2). On price, update cadence, ads and in-app purchases 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. Urban Sandbox sells 8 in-app purchases, starting at $5.99 per year and G3MS sells 2 in-app purchases, starting at $7.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Urban Sandbox holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 2 and 8 respectively.

UpkeepUpdate frequency

Urban Sandbox ships an update every 6 weeks, G3MS every 2 months. Both last shipped on November 7, 2026.

Scorecard2 real differences · 8 level
Urban Sandbox versus G3MS: the parameters behind the verdict, then further details
ParameterUrban SandboxG3MS
PriceFreeFree
Rating5.0 (2 ratings) — better4.5 (8 ratings)
Positive reviews—100.0% of reviews
Number of ratings28 — better
Update frequencyEvery 6 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.0 — better15.1
Further details — not scored
Size121 MB44 MB
Age rating9+4+
DeveloperRND Holdings, LLCGet Gems App Corporation

Customer experience

Urban Sandbox

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

G3MS

All ratings8 ratings
Positive87.5%
Neutral0.0%
Negative12.5%
Written reviews7 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

8 purchases

Urban Sandbox

Subscriptions1
  • Urban Sandbox$5.991 Year
One-time7
  • Learning Book$0.99
  • Starter Pack2 variants$4.99
  • Mini Pack$9.99
Show 4 more
  • Mega Pack$19.99
  • Super Saver Pack$49.99
  • Luxury Pack$84.99
  • Premium Pack$124.99
2 purchases

G3MS

Subscriptions2
  • Monthly Plan$7.991 Month
  • Yearly Plan$76.901 Year

Questions

Is Urban Sandbox free?
Urban Sandbox is free to download, with in-app purchases available.
Is G3MS free?
G3MS is free to download, with in-app purchases available.
Which has better reviews, Urban Sandbox or G3MS?
Urban Sandbox is rated higher. Urban Sandbox averages 5.0 out of 5 from 2 ratings, while G3MS averages 4.5 from 8 ratings.
Do Urban Sandbox or G3MS have ads?
Neither Urban Sandbox nor G3MS shows ads.
Which is updated more often, Urban Sandbox or G3MS?
Urban Sandbox ships an update every 6 weeks, and G3MS every 2 months. Most recently, Urban Sandbox was updated on November 7, 2026 and G3MS on November 7, 2026.

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