Comparison

Roshi vs Koy

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

Head to head
About

Roshi

Connects parents with university students for personalized tutoring in academics, sports, music, and languages. Offers engaging lessons tailored to a child's needs with easy scheduling and payment.

Highlights
  • Personalized instruction
  • Wide range of subjects
  • Relatable role models
  • Seamless scheduling
  • Integrated payments
Features
Read full description

Roshi is the ultimate platform for parents seeking top-notch, personalized instruction for their young children. Our app connects you with university students who are not only knowledgeable in their fields but also relatable role models for your kids. With a wide range of subjects including academics, sports, music, and languages, Roshi offers engaging and effective training sessions tailored to your child's needs. Why Choose Roshi? - Personalized Instruction: Tailored lessons from skilled university students. - Wide Range of Subjects: From math and science to soccer and piano, we cover it all. - Relatable Role Models: Instructors who connect with and inspire your child. - Seamless Experience: Easy scheduling and payments through our integrated platform. How It Works: - Sign Up: Create your account and browse available instructors. - Select a Tutor: Choose the perfect match based on your child’s needs. - Schedule Lessons: Book convenient times directly through the app. Join the growing community of parents who trust Roshi to provide quality, engaging instruction for their children. Download now and see the difference personalized tutoring can make!

About

Koy

This app simplifies coordinating children's activities across different households. It allows parents and guardians to track events, collaborate on responsibilities like carpooling, and build a supportive community for managing family life.

Highlights
  • Track children's activities
  • Collaborate with other parents
  • Share responsibilities
  • Coordinate carpooling and rides
  • Streamline communication
  • Build a supportive parent network
Read full description

We've all heard the saying, "It takes a village to raise a child". Here at Parent-AI, we not only believe in that sentiment but we've also brought it to life in the digital age. Juggling children's activities across different households can be a daunting task. From managing school events and hobby classes to coordinating play dates and shared rides for sports practices, parenting can often feel like an overwhelming marathon. But what if we could transform those responsibilities into opportunities for community building and shared experiences? That's where Koy steps in. We've crafted an intuitive, comprehensive platform designed to streamline the coordination and communication between busy parents and guardians. With Koy, you can effortlessly track your kids' activities, collaborate with other parents, and share responsibilities like driving kids to baseball practice or supervising a study group. It's about creating a supportive network that makes managing and coordinating activities a breeze. Our mission is to simplify your life, strengthen your community, and allow you to focus on what truly matters - cherishing the precious moments of parenthood. Whether you're a single parent, a guardian, or part of a bustling household, Koy by Parent-AI is here to bring the power of the village right to your fingertips. Join Koy today and experience a more connected, collaborative, and stress-free way to manage your children's activities. Because together, we make family feel like a team! Welcome to your modern village.

Screenshots

Roshi4 screens
Koy4 screens

Verdict

The call

The clearest difference is rating: Koy at 5.0 against Roshi's 4.2. Roshi's advantage is ratings volume (5 vs 1) and iOS requirement (12.0 vs 16.1). 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Koy holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: Roshi has 5 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 months. Both last shipped on November 3, 2026.

Scorecard3 real differences · 7 level
Roshi versus Koy: the parameters behind the verdict, then further details
ParameterRoshiKoy
PriceFreeFree
Rating4.2 (5 ratings)5.0 (1 ratings) — better
Positive reviews100.0% of reviews—
Number of ratings5 — better1
Update frequencyEvery 3 monthsEvery 3 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPad
Requires iOS12.0 — better16.1
Further details — not scored
Size32 MB5 MB
Age rating4+12+
DeveloperRoshi LLCParent-AI LLC

Customer experience

Roshi

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Koy

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Roshi

No in-app purchases

None

Koy

No in-app purchases

Questions

Is Roshi free?
Roshi is free to download, with no in-app purchases.
Is Koy free?
Koy is free to download, with no in-app purchases.
Which has better reviews, Roshi or Koy?
Koy is rated higher. Roshi averages 4.2 out of 5 from 5 ratings, while Koy averages 5.0 from 1 ratings.
Do Roshi or Koy have ads?
Neither Roshi nor Koy shows ads.
Which is updated more often, Roshi or Koy?
Roshi ships an update every 3 months, and Koy every 3 months. Most recently, Roshi was updated on November 3, 2026 and Koy on November 3, 2026.

Other comparisons