Comparison

Studio 789 vs CharGem

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

Head to head
About

Studio 789

Features
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- Parent login to view their student's information - Renewal or special event reminder - Deliver message or notice to parent - Enrollment details and renewal history - Class schedule - School calendar - Photo sharing - School policy and information - School contacts and map - e-Receipt and e-Invoice - Online tuition payment - Membership function

About

CharGem

Features
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CharGem helps learners read AND write Chinese characters — the way they're taught in school, made playful. Grade 1 is free. Go further to unlock Grades 2–6. WHAT'S INSIDE • 2,555 characters organized by grade, term and lesson — Grade 1 is free • Write stroke by stroke — trace first, then write from memory • 1,619 characters shown in real example sentences, so learning has context • Games and quizzes: listening, fill-the-blank, matching, mastery checks • Traditional + Zhuyin for Taiwan Ā· Simplified + Pinyin for China and Singapore Ā· English interface for heritage families • Gentle daily reminders, streaks, gems, and collectible treasures to keep learners coming back BUILT FOR FAMILIES • No ads, ever — nothing interrupts your child • Works offline — no connection needed to practise • Private by design — no third-party tracking Meet MópĆ­, the red-panda cub who cheers you on. Free to start today. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://zibao.nextstarai.com/privacy.html

Screenshots

Studio 7894 screens
CharGem4 screens

Verdict

The call

The clearest difference is in-app purchases: Studio 789 at none against CharGem's 2. CharGem's advantage is update cadence (every 2 weeks vs every 2 months). On price, ads, device support and iOS requirement 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. CharGem sells 2 in-app purchases, starting at $4.99 per 7 days. Studio 789 asks for nothing beyond the download.

UpkeepUpdate frequency

Studio 789 ships an update every 2 months, CharGem every 2 weeks. The most recent releases landed on November 7, 2026 and October 31, 2026 respectively.

Scorecard2 real differences Ā· 4 level
Studio 789 versus CharGem: the parameters behind the verdict, then further details
ParameterStudio 789CharGem
PriceFreeFree
Update frequencyEvery 2 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.615.1 — better
Further details — not scored
Size12 MB39 MB
Age rating4+4+
DeveloperDreamware LimitedNext Star AI, LLC

In-app purchases

None

Studio 789

No in-app purchases

2 purchases

CharGem

Subscriptions2
  • Weekly3 Days trial$4.997 Days
  • Yearly14 Days trial$24.991 Year

Questions

Is Studio 789 free?
Studio 789 is free to download, with no in-app purchases.
Is CharGem free?
CharGem is free to download, with in-app purchases available.
Do Studio 789 or CharGem have ads?
Neither Studio 789 nor CharGem shows ads.
Which is updated more often, Studio 789 or CharGem?
Studio 789 ships an update every 2 months, and CharGem every 2 weeks. Most recently, Studio 789 was updated on November 7, 2026 and CharGem on October 31, 2026.

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