Five vs Zero?
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Five
Arrange number tiles to create sequences that sum to multiples of five. This logic puzzle offers 100 hand-crafted challenges, from easy to expert. Stuck? Get hints or create your own puzzles for endless replayability.
- Number tile arrangement
- Sequences sum to multiples of five
- 100 hand-crafted puzzles
- Hint system
- Custom puzzle creation
- Crossword-style number challenges
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A new challenge for puzzle lovers – from the creator of the numerical board game hit Five-O! If you've played Five-O, you'll find the rules to be simple and familiar. Just arrange the tiles onto the blank spaces in the puzzle so that every sequence adds up to a multiple of five (5, 10, 15, etc.). The puzzles start out with a set of dark tiles that are locked in place. It’s like a crossword puzzle of numbers! There are 100 hand-crafted puzzles ranging from easy to extremely challenging. But don't worry! If you get stuck, you can tap the lightbulb button to earn a hint. You can even create brand new puzzles to play yourself! You choose the size of the puzzle and how many starting tiles to reveal. You'll never run out of new puzzles to play! And if you haven't played Five-O, the board game, be sure to check that one out as well!
Zero?
A fast-paced number game where players must quickly determine if sums of numbers are multiples of ten. Offers various modes for solo play or head-to-head challenges with friends.
- Sum calculation challenges
- Timed gameplay
- Relaxed mode without time pressure
- Two-player head-to-head mode
- Multiplayer on a single device
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Can you tell if the sum of 3 numbers are a multiple of ten? 4 numbers? More? It sounds easy, but hurry... time is running out! Challenge your friends, and play face-to-face on a single iPad or iPhone! Fun for all ages, choose your favourite mode: • Zoom & Zen, for a fast or easy-paced challenge • Relax, for stress-free fun without the time pressure • Two-player, the unique way to play with your friends in head-to-head action! Reviews for Sum Fun: “ It’s a solid math game, one that brings in interesting gameplay ideas and which has a stellar execution ” – AppGames.net: 9 / 10 “ By the time your kids have played with this app a few times, they’ll be adding up the numbers faster than you can say, ‘What’s six plus eight?’ ” – Fun2Tap: 5 / 5
Screenshots
Verdict
The clearest difference is rating: Five at 4.7 against Zero?'s 3.3. Five also leads on update cadence (fortnightly vs every 3 months) and ratings volume (57 vs 4). Zero?'s advantage is in-app purchases (none vs 1) and ads (none vs shown). On price 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
Both are free to download. Five sells 1 one-off in-app purchase. Zero? asks for nothing beyond the download.
Five holds the better App Store score, 4.7 against 3.3. That said, the two scores are not equally well evidenced: Five has 57 ratings behind it against 4, so its average is the more settled of the two. Written reviews complicate that: 87% of Five's written reviews are positive against 100% of Zero?'s, so the app with the better star average is not the one people write more warmly about.
Five ships an update fortnightly, Zero? every 3 months. The most recent releases landed on October 10, 2026 and October 3, 2026 respectively.
| Parameter | Five | Zero? |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (57 ratings) — better | 3.3 (4 ratings) |
| Positive reviews | 86.7% of reviews | 100.0% of reviews — better |
| Number of ratings | 57 — better | 4 |
| Update frequency | Fortnightly — better | Every 3 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 | 8.0 — better |
| Further details — not scored | ||
| Size | 22 MB | 27 MB |
| Age rating | 4+ | 4+ |
| Developer | Curt Stein | Greg Sharpe |
Customer experience
Five
Zero?
Bugs and requests
Five
Reported bugs
4 issues- Progress not synced with iCloud
- Ad-free restoration issue
- Incorrect level 71
- Incorrect level 85
Requested features
6 requests- Puzzles with higher numbers
- Fix incorrect levels (71, 85)
- Limit hints
- Add more levels
- Allow screen rotation (landscape/portrait)
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- Chance to see final configuration
Zero?
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Five
- Ad Removal$0.99
Zero?
No in-app purchases









