Comparison

K vs Parrivo

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

Head to head
About

K

Master K-12 math with interactive games and practice covering algebra, calculus, and more. Features AI-powered explanations, quizzes, and a graphing calculator for on-the-go learning.

Highlights
  • Comprehensive math topics
  • AI-powered solver with explanations
  • Interactive quizzes
  • Smart graphing calculator
  • Video lessons and tips
  • Offline practice
Features
Read full description

Master All Grade Math with us! Take your math skills to the next level with our interactive and engaging learning experience. Whether you're preparing for exams or just want to strengthen your knowledge, this app has everything you need! Why Choose Our App? - Comprehensive Topics – Cover algebra, calculus, trigonometry, probability, and more. - AI-Powered Solver – Get instant solutions and step-by-step explanations. - Interactive Quizzes – Test your knowledge with fun and challenging exercises. - Smart Graphing Calculator – Solve complex equations with ease. - Video Lessons & Tips – Learn from expert instructors anytime, anywhere. - Practice Anytime – Offline access ensures you can study on the go. Download now and unlock the power of math mastery! Terms of use: https://thanhbkap.github.io/M4U-Term-And-Use/ Happy learning!

About

Parrivo

Features
Read full description

Build vocabulary with a clear learning path designed for steady, independent practice. Parrivo brings vocabulary, reading, writing, quizzes, and review games together in one student-friendly app. Choose a grade, open a unit, and move through focused activities that help new words stick. LEARN STEP BY STEP • Explore vocabulary in context • Practice with guided reading and writing activities • Check understanding with quizzes • Reinforce learning through review games STAY MOTIVATED • Follow unit and grade progress • Complete daily quests • Earn XP and build a learning streak • Continue where you left off FOR GRADES 1–12 Parrivo organizes learning into grade-based units, so students can choose an appropriate level and move at their own pace. PARRIVO PREMIUM A subscription unlocks full access to learning units, quizzes, review games, and progress tracking. Subscription options and prices are shown in the App Store before purchase. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel subscriptions in your Apple Account settings. Restore Purchases is available in the app. Account creation and account management are intended for a parent or legal guardian. Terms of Use: https://parrivo.com/terms-of-service Privacy Policy: https://parrivo.com/privacy-policy

Screenshots

K4 screens
Parrivo4 screens

Verdict

The call

The clearest difference is ads: Parrivo at none against K's shown. K's advantage is iOS requirement (15.0 vs 17.0). On price, update cadence, in-app purchases and device support 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. K sells 8 in-app purchases, starting at $1.99 per 3 months and Parrivo sells 2 in-app purchases, starting at $8.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

K ships an update every 2 weeks, Parrivo every 3 weeks. The most recent releases landed on October 15, 2026 and October 18, 2026 respectively.

Scorecard2 real differences · 8 level
K versus Parrivo: the parameters behind the verdict, then further details
ParameterKParrivo
PriceFreeFree
Rating4.4 (142 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings142 — better—
Update frequencyEvery 2 weeks — betterEvery 3 weeks
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better17.0
Further details — not scored
Size202 MB51 MB
Age rating4+4+
DeveloperDEVWORLD VIETAM COMPANY LIMITEDLittle Elephant Inc

In-app purchases

8 purchases

K

Subscriptions7
  • Three Months VIP$1.993 Months
  • Learning Premium Monthly Plan$1.991 Month
  • One Month VIP3 Days trial$4.991 Month
Show 4 more
  • Learning Premium HalfYear Plan$5.996 Months
  • Learning Premium Annual Plan$9.991 Year
  • Six Months VIP3 Days trial$24.996 Months
  • 1 Year VIP3 Days trial$49.991 Year
One-time1
  • No ads Pack$14.99
2 purchases

Parrivo

Subscriptions2
  • Parrivo Premium Monthly$8.991 Month
  • Parrivo Premium Yearly$69.991 Year

Questions

Is K free?
K is free to download, with in-app purchases available.
Is Parrivo free?
Parrivo is free to download, with in-app purchases available.
Do K or Parrivo have ads?
K shows ads; Parrivo does not.
Which is updated more often, K or Parrivo?
K ships an update every 2 weeks, and Parrivo every 3 weeks. Most recently, K was updated on October 15, 2026 and Parrivo on October 18, 2026.

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