Comparison

On vs Word Oasis

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

Head to head
About

On

Challenge your mind with this classic number puzzle. Solve nine-by-nine grids with adjustable difficulty and helpful tools like error checking and pencil marking. Enjoy endless unique puzzles and track your progress.

Highlights
  • Randomly generated puzzles
  • Three difficulty levels plus custom
  • Error checking
  • Annotations (pencil marking)
  • Undo/Redo moves
  • Auto-save functionality
  • Custom game input
Features
Read full description

Challenge you brain! On-Core Sudoku: consists of a nine-by-nine grid with 9 inner squares. To solve Sudoku each inner square must have one of the numbers between 1 and 9. Each row and column must contain each number once. It features error checking, annotations (pencil marking), undo move(s) and more. On-Core Sudoku features: - Games are generated randomly so you will never play the same game twice. - The game has three difficulty levels: Easy, Medium and Hard plus a Custom option for custom games. - Each difficulty level has it's own timer so you can try to beat your best time at each level. - The game auto-saves so that you can return to it at any time. - Generate Symmetric or Non-Symmetric puzzles. - Error checking to show invalid entered numbers. - Annotate (pencil mark) a tile with one or more numbers. - Unlimited Undo or Redo moves. - Autofill option to automatically fill in all the possible annotations. - Option to enter custom games from sources such as newspapers, puzzle books, websites, etc. - Wirelessly send or receive custom games, via a local WiFi connection, to a friend or family member who also has Game Pack Volume 1 or On-Core Sudoku. - Sound effects can be turned on or off. - No internet connection is required because the games are on your iPhone or iPod Touch.

About

Word Oasis

Challenge your mind with word puzzles that blend beautiful themes and brain-teasing challenges. Solve puzzles using anagrams, synonyms, and rhymes to discover secret words. Earn coins for hints and customize your game with gorgeous themes.

Highlights
  • Solve puzzles with anagrams, rhymes, and synonyms
  • Unlock and customize beautiful themes
  • Earn coins for hints
  • Replay previous levels
  • Relaxing music and sounds
Features
Read full description

Relax, refresh, and challenge your mind with Word Oasis! Word Oasis blends the calm of beautiful themes with the fun of brain-teasing word puzzles. Discover the secret word given the clues. You'll be given 3 clues: an anagram (another word with the same letters), a synonym (means the same thing), and a rhyme. Each level offers a new challenge to sharpen your mind and relax your senses. Enjoy peaceful music and satisfying sounds as you play — or turn them off anytime. Customize your oasis with gorgeous themes like Autumn, Ocean, Light, and Dark. Earn coins by solving puzzles and spend them on helpful hints to keep the fun flowing! Replay old levels whenever you want, take your time, and enjoy the relaxing journey. ► Relax with soothing music, themes, and sounds. ► Solve puzzles using anagrams, rhymes, and synonyms! ► Unlock beautiful, calming themes to customize your game. ► Spend coins to get hints and keep progressing. ► Go back and replay previous levels anytime! ► Easy to start, challenging to master — pure word puzzle bliss! Word Oasis is your perfect escape. Whether you have 5 minutes or 50, dive in and refresh your brain today!

Screenshots

On4 screens
Word Oasis4 screens

Verdict

The call

The clearest difference is price: Word Oasis at Free against On's $0.99. Word Oasis also leads on update cadence (every 3 weeks vs every 25 months). On's advantage is ads (none vs shown) and iOS requirement (9.0 vs 15.0). On rating, ratings volume, 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

Word Oasis is free to download; On costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for On against 5.0 for Word Oasis. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

UpkeepUpdate frequency

On ships an update every 25 months, Word Oasis every 3 weeks. The most recent releases landed on November 6, 2026 and October 30, 2026 respectively.

Scorecard5 real differences · 5 level
On versus Word Oasis: the parameters behind the verdict, then further details
ParameterOnWord Oasis
Price$0.99Free — better
Rating5.0 (1 ratings)5.0 (1 ratings)
Positive reviews0.0% of reviews—
Number of ratings11
Update frequencyEvery 25 monthsEvery 3 weeks — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationPaidAd-supported — better
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS9.0 — better15.0
Further details — not scored
Size11 MB118 MB
Age rating4+4+
DeveloperOn-Core Software LLCClint Johnson

In-app purchases

None

On

No in-app purchases

None

Word Oasis

No in-app purchases

Questions

Is On free?
On costs $0.99, with no in-app purchases.
Is Word Oasis free?
Word Oasis is free to download, with no in-app purchases.
Which has better reviews, On or Word Oasis?
On and Word Oasis are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.
Do On or Word Oasis have ads?
Word Oasis shows ads; On does not.
Which is updated more often, On or Word Oasis?
On ships an update every 25 months, and Word Oasis every 3 weeks. Most recently, On was updated on November 6, 2026 and Word Oasis on October 30, 2026.

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