Comparison

YPT vs Sudoku

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

Head to head
About

YPT

Track your study time, set daily goals, and connect with a global community of learners. Visualize your progress with detailed statistics and engage in friendly competition to stay motivated.

Highlights
  • Study time tracking
  • Daily planner and to-do lists
  • Create and join study groups
  • Real-time ranking
  • Visual study statistics
  • Remote study motivation
Features
Read full description

Study along with 5 million people all over the world. Studying is a marathon. Study together on YPT Record your study time and share it with friends. Get motivated with your friends and study together remotely. 1. Time tracking and todo Tracking study time for each subject. 2. 10 minutes planner Review your daily study logs. Check To-do for the day. 3. Study groups Create groups to check out friends' status and study activities. 4. Realtime ranking Get to know your rank in the same study category. 5. Study stats Color gets deeper as you study more. Visualize your day/week/month study records. [End User License Agreement | Privacy Policy | Terms of Service Use | Subscription Terms of Service] ▷ End User License Agreement (EULA) : https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ ▷ Terms of Service Use : https://yeolpumta.notion.site/eb3f7a2886ac42d1b9e629a9075c339d ▷ Privacy Policy : https://yeolpumta.notion.site/4bdcc3a5d7c34803ad49d05f7422aea0 ▷ Subscription Terms and Conditions : https://yeolpumta.notion.site/87efb0d77a5b4a7bb6753a1653c3cb47 [ Customer Support ] ▷ E-Mail : pallo.ypt@gmail.com Addr: 16, Teheran-ro 53-gil, Gangnam-gu, Seoul, Republic of Korea Tel: 070-4571-4756

About

Sudoku

Engage in a classic Sudoku experience with multiple difficulty levels suitable for all ages. Enjoy a clean interface, track your game history, and access unlimited solutions with a yearly subscription.

Highlights
  • Multiple difficulty levels
  • Beautiful and concise interface
  • Game history tracking
  • Unlimited Sudoku solutions
  • Ad-free experience
Features
Read full description

A new generation of classic Sudoku games: 1. A variety of difficulties, anyone from children to masters can play 2. Beautiful and concise 3. Allows you to see the history of your past Sudoku games SUBSCRIPTION PRICING AND TERMS This App offers an auto-renewing subscription to provide you with unlimited access to the sudoku solution . the price is $4.99/Year for unlocking all content and features. This price is for United States customers. Pricing in other countries may vary and actual charges may be converted to your local currency depending on the country of residence. Payment will be charged to iTunes Account at confirmation of purchase. Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal. Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user’s Account Settings after purchase. Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable. Read more about our terms and conditions here: Terms of service: https://weibo.com/5580956204/I55tg3VVB Privacy policy: https://weibo.com/5580956204/HB9vBf59c Email: From2019219@gmail.com

Screenshots

YPT4 screens
Sudoku4 screens

Verdict

The call

The clearest difference is rating: YPT at 4.7 against Sudoku's 4.1. YPT also leads on monetization model (free with in-app purchases vs subscription) and update cadence (every 2 days vs monthly). On price, ratings volume, 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. YPT sells 6 in-app purchases, starting at $2.99 per month and Sudoku sells 10 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

YPT holds the better App Store score, 4.7 against 4.1. Both are backed by a comparable volume of ratings — 1.8K and 4.3K respectively. Written reviews point the same way: 56% of YPT's written reviews are positive against 47% of Sudoku's.

UpkeepUpdate frequency

YPT ships an update every 2 days, Sudoku monthly. Both last shipped on November 12, 2026.

Scorecard4 real differences · 6 level
YPT versus Sudoku: the parameters behind the verdict, then further details
ParameterYPTSudoku
PriceFreeFree
Rating4.7 (1.8K ratings) — better4.1 (4.3K ratings)
Positive reviews55.9% of reviews — better46.6% of reviews
Number of ratings1.8K4.3K — better
Update frequencyEvery 2 days — betterMonthly
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases — betterSubscription
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad, iPod
Requires iOS15.0 — better15.6
Further details — not scored
Size269 MB16 MB
Age rating4+4+
DeveloperUnCheon BaekBeijing Free Calculator Technology Co., Ltd.

Customer experience

YPT

All ratings1,820 ratings
Positive91.9%
Neutral2.9%
Negative5.3%
Written reviews1,165 reviews
Positive55.9%
Neutral16.6%
Negative27.6%

Sudoku

All ratings4,149 ratings
Positive77.4%
Neutral5.9%
Negative16.7%
Written reviews964 reviews
Positive46.6%
Neutral12.4%
Negative41.0%

User reviews

YPT

From 1.8K App Store ratings

What we love

  • 🚀 Motivating and competitive
  • 👍 Comprehensive features (timer, planner, study groups)
  • 🎨 Customizable themes and aesthetics
  • 🔊 Helpful background noise options

Room to improve

  • 🐛 Bugs and glitches (freezing, crashing, time recording issues)
  • ⏱️ Time zone issues for users outside of Korea
  • 🔒 Restricted app access during study sessions

Sudoku

From 4.3K App Store ratings

What we love

  • 🚀 No ads
  • 👍 Simple and straightforward
  • 👍 Variety of difficulty levels
  • 👍 Separate notes and final number inputs
  • 👍 Good for practicing and improving skills

Room to improve

  • 🐛 Repeated puzzle layouts
  • 🐛 Bugs and errors in puzzle generation
  • 🔒 Requires payment to access basic features (sound, difficulty settings)
  • 👎 Large gap in difficulty between easy and medium levels
  • 👎 Inability to undo/reset a game in progress

Bugs and requests

YPT

Reported bugs

4 issues
  • Timer not stopping when exiting the app
  • Inconsistent time recording across devices
  • Sudden language changes without user input
  • Connectivity issues and server problems

Requested features

4 requests
  • Add ability to edit/remove specific study time entries
  • Implement a desktop/web version of the app
  • Allow more customization options for the calendar and planner
  • Improve the allowed apps feature to work more reliably

Sudoku

Reported bugs

4 issues
  • Puzzles with no unique solution
  • Game resets when app is closed
  • Candidate numbers disappearing unexpectedly
  • Incorrect highlighting of mistakes

Requested features

5 requests
  • Ability to select and mark multiple cells
  • Option to view statistics and compare scores
  • More granular difficulty settings between easy and hard
  • Ability to save and resume an in-progress game
  • Explanations for advanced solving techniques

In-app purchases

6 purchases

YPT

Subscriptions3
  • Monthly subscription$2.991 Month
  • Monthly Premium$4.991 Month
  • Yearly Premium$29.991 Year
One-time3
  • 100 flames$0.99
  • Unlock Apps$0.99
  • 600 flames$3.99
10 purchases

Sudoku

Subscriptions2
  • Advanced features-1 month$2.991 Month
  • Advanced features-all year$12.991 Year
One-time8
  • 数独高级会员-月$1.99
  • 数独高级会员-年$9.99
  • Sudoku Monthly Membership$9.99
Show 5 more
  • Beginner Skill Course$9.99
  • Permanent Purchase$14.99
  • Sudoku Year Member$29.99
  • Sudoku Year Member$49.99
  • All Skill Courses$59.99

Questions

Is YPT free?
YPT is free to download, with in-app purchases available.
Is Sudoku free?
Sudoku is free to download, with in-app purchases available.
Which has better reviews, YPT or Sudoku?
YPT is rated higher. YPT averages 4.7 out of 5 from 1.8K ratings, while Sudoku averages 4.1 from 4.3K ratings.
Do YPT or Sudoku have ads?
Neither YPT nor Sudoku shows ads.
Which is updated more often, YPT or Sudoku?
YPT ships an update every 2 days, and Sudoku monthly. Most recently, YPT was updated on November 12, 2026 and Sudoku on November 12, 2026.

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