Comparison

Sudoku School! vs Phonogram Sounds

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

Head to head
About

Sudoku School!

This app teaches children and beginners how to play Sudoku with simplified 4x4 and 6x6 puzzles. It offers in-game help, colored tiles for easier recognition, and ten difficulty levels to accommodate growing skills. Multiple user accounts and a trophy system encourage progress.

Highlights
  • 4x4 and 6x6 Sudoku puzzles
  • In-game rule explanations
  • Colored tiles for beginners
  • Ten difficulty levels
  • Multiple user accounts
  • Trophy wall for progress
Features
Read full description

Great for building spatial reasoning and logic skills! Sudoku School is the perfect sudoku app for kids and other sudoku beginners. It teaches you to play using 4x4 and 6x6 puzzles that are much simpler than the usual 9x9 sudoku puzzle. It also has an in-game help feature that explains the rules clearly with drawings and simple text. The game tiles have both numbers and colors, so younger players can use the colors for help until they get comfortable using the numbers. Ten puzzle levels cover a huge range of difficulties, from the easiest 4x4 level, which is perfect for younger kids, to the expert 6x6 level which is almost as hard as regular sudoku. This means the game can grow with you for a long time while you progress. Once you have mastered all the levels in this app, you are ready to graduate to regular sudoku! Multiple user accounts make it easy to share--perfect for families or for the classroom. • Easy to use drag and drop puzzles • Colored tiles to help beginners • Ten levels of difficulty • In-game explanation of the rules • Trophy wall to celebrate progress • Score tracking for multiple users • Six puzzle themes • 5000 puzzles available (20 puzzles are free) We made sudoku school free to download so that you can test it without having to buy anything. It comes with 20 free sudoku puzzles--two puzzles in each of the ten levels. There are 5000 additional puzzles available for download, but the free puzzles should keep your sudoku student busy for a while :)

About

Phonogram Sounds

This interactive app provides clear audio pronunciations for letter sounds and combinations, featuring all 72 basic phonograms from a popular language arts curriculum. It's designed to support reading and spelling development for learners of all ages.

Highlights
  • Hear correct pronunciation of sounds
  • Clear enunciation of letters and combinations
  • Includes all 72 basic phonograms
  • Supports reading and spelling skills
  • Interactive learning experience
Features
Read full description

Touch a button and hear the correct pronunciation! *Check that your sound is turned on!* This interactive program features clear enunciation of the sounds of the letters and letter combinations (also known as phonograms). Contains all 72 of the basic phonograms as taught in the All About Reading and All About Spelling language arts curriculum. All About Reading is a multisensory, mastery-based program that starts with essential pre-reading skills and continues on to teach all five key components of reading. All About Spelling teaches encoding skills, spelling rules, and multisensory strategies to help your student become a proficient speller for life. Our lightly scripted “open and go” lesson plans and mastery-based approach leave no gaps and make this curriculum a favorite of homeschool families everywhere. Suitable for all ages and learning styles!

Screenshots

Sudoku School!4 screens
Phonogram Sounds3 screens

Verdict

The call

The clearest difference is in-app purchases: Phonogram Sounds at none against Sudoku School!'s 2. Sudoku School!'s advantage is rating (4.4 vs 4.0) and review sentiment (84% vs 70%). On price, update cadence, ads 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. Sudoku School! sells 2 one-off in-app purchases. Phonogram Sounds asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Sudoku School! holds the better App Store score, 4.4 against 4.0. That said, the two scores are not equally well evidenced: Sudoku School! has 430 ratings behind it against 84, so its average is the more settled of the two. Written reviews point the same way: 84% of Sudoku School!'s written reviews are positive against 70% of Phonogram Sounds's.

UpkeepUpdate frequency

Sudoku School! ships an update every 7 months, Phonogram Sounds every 6 months. The most recent releases landed on October 22, 2026 and October 20, 2026 respectively.

Scorecard6 real differences · 4 level
Sudoku School! versus Phonogram Sounds: the parameters behind the verdict, then further details
ParameterSudoku School!Phonogram Sounds
PriceFreeFree
Rating4.4 (430 ratings) — better4.0 (84 ratings)
Positive reviews84.1% of reviews — better69.6% of reviews
Number of ratings430 — better84
Update frequencyEvery 7 monthsEvery 6 months — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS9.0 — better15.0
Further details — not scored
Size25 MB27 MB
Age rating4+4+
DeveloperSarah PierceAll About Learning Press, Inc.

Customer experience

Sudoku School!

All ratings430 ratings
Positive84.4%
Neutral8.4%
Negative7.2%
Written reviews138 reviews
Positive84.1%
Neutral5.1%
Negative10.9%

Phonogram Sounds

All ratings84 ratings
Positive70.2%
Neutral14.3%
Negative15.5%
Written reviews46 reviews
Positive69.6%
Neutral13.0%
Negative17.4%

User reviews

Sudoku School!

From 430 App Store ratings

What we love

  • 👍 Easy to learn
  • 🤩 Fun and addictive
  • 🧠 Helps develop logic skills
  • 🎨 Colorful and visually appealing
  • 👨‍👧‍👦 Great for kids and beginners

Room to improve

  • 💰 Limited free content, need to pay to unlock more
  • 🔒 Locked levels restrict full access
  • 🙄 Only 2 free puzzles per difficulty level

Phonogram Sounds

From 84 App Store ratings

What we love

  • 👍 Great supplement for AAS/AAR
  • 👍 Helpful for parents/teachers
  • 👍 Easy to use
  • 👍 Clear phonetic sounds
  • 👍 Good for practice

Room to improve

  • 👎 Incorrect 'r' sound
  • 👎 Incomplete phonogram set
  • 👎 Not a standalone lesson
  • 👎 Not for fun
  • 👎 Missing Spalding compatibility

Bugs and requests

Sudoku School!

Reported bugs

2 issues
  • Tiles sometimes lock up and can't be moved
  • No win acknowledgment after completing puzzles

Requested features

3 requests
  • Unlock all levels for free
  • Provide more free puzzles
  • Add daily free puzzle challenges

Phonogram Sounds

Reported bugs

7 issues
  • R says /er/ instead of /r/
  • Sound not working
  • App crashes
  • No sound when tapping phonograms
  • Sound only works with ringer on
Show 2 more
  • List of phonograms cut off on iPad
  • App is stick, no audio, no movement

Requested features

9 requests
  • Videos showing lip/tongue placement
  • Interactive game app
  • App for building words/movable tiles
  • Level-based sound availability
  • Enlarging tapped tile
Show 4 more
  • Adding missing phonograms (Level 6, Spalding)
  • Adding more sounds for /i/, /e/, /x/, /ou/, /ei/, /oe/, /wor/, /ear/
  • Spelling lists for review
  • All About Reading app with word reading

In-app purchases

2 purchases

Sudoku School!

One-time2
  • 4x4 puzzle pack$0.99
  • 6x6 puzzle pack$0.99
None

Phonogram Sounds

No in-app purchases

Questions

Is Sudoku School! free?
Sudoku School! is free to download, with in-app purchases available.
Is Phonogram Sounds free?
Phonogram Sounds is free to download, with no in-app purchases.
Which has better reviews, Sudoku School! or Phonogram Sounds?
Sudoku School! is rated higher. Sudoku School! averages 4.4 out of 5 from 430 ratings, while Phonogram Sounds averages 4.0 from 84 ratings.
Do Sudoku School! or Phonogram Sounds have ads?
Neither Sudoku School! nor Phonogram Sounds shows ads.
Which is updated more often, Sudoku School! or Phonogram Sounds?
Sudoku School! ships an update every 7 months, and Phonogram Sounds every 6 months. Most recently, Sudoku School! was updated on October 22, 2026 and Phonogram Sounds on October 20, 2026.

Other comparisons