On vs Word Oasis
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
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.
- Randomly generated puzzles
- Three difficulty levels plus custom
- Error checking
- Annotations (pencil marking)
- Undo/Redo moves
- Auto-save functionality
- Custom game input
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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.
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.
- Solve puzzles with anagrams, rhymes, and synonyms
- Unlock and customize beautiful themes
- Earn coins for hints
- Replay previous levels
- Relaxing music and sounds
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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
Verdict
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
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.
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.
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.
| Parameter | On | Word Oasis |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 5.0 (1 ratings) | 5.0 (1 ratings) |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 1 | 1 |
| Update frequency | Every 25 months | Every 3 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Paid | Ad-supported — better |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 9.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 11 MB | 118 MB |
| Age rating | 4+ | 4+ |
| Developer | On-Core Software LLC | Clint Johnson |
In-app purchases
On
No in-app purchases
Word Oasis
No in-app purchases









