Zero? vs Twentris HD,blocks and numbers
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
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
Twentris HD,blocks and numbers
A puzzle game where you combine four blocks to reach a total of 20. It features 10 levels and allows you to track your high scores. Enjoy a simple yet engaging challenge.
- Combine four blocks
- Reach a total of 20
- 10 levels
- High score tracking
- Game Center integration
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You only have to add 20 with 4 blocks joined together. Tap the blocks to select them or deselect them. The are 10 levels to complete the game. Also you can record your highscores at Game Center.
Screenshots
Verdict
The clearest difference is review sentiment: Zero? at 100% against Twentris HD,blocks and numbers's 50%. Zero? also leads on ads (none vs shown) and monetization model (free vs ad-supported). Twentris HD,blocks and numbers's advantage is rating (5.0 vs 4.0) and update cadence (every 2 weeks vs every 3 months). On price, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Twentris HD,blocks and numbers holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 3 and 1 respectively. Written reviews complicate that: 100% of Zero?'s written reviews are positive against 50% of Twentris HD,blocks and numbers's, so the app with the better star average is not the one people write more warmly about.
Zero? ships an update every 3 months, Twentris HD,blocks and numbers every 2 weeks. Both last shipped on October 24, 2026.
| Parameter | Zero? | Twentris HD,blocks and numbers |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (3 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 100.0% of reviews — better | 50.0% of reviews |
| Number of ratings | 3 — better | 1 |
| Update frequency | Every 3 months | Every 2 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 8.0 — better | 11.0 |
| Further details — not scored | ||
| Size | 27 MB | 25 MB |
| Age rating | 4+ | 4+ |
| Developer | Greg Sharpe | David Herrera Solas |
Customer experience
Zero?
Twentris HD,blocks and numbers
In-app purchases
Zero?
No in-app purchases
Twentris HD,blocks and numbers
No in-app purchases
Questions
Is Zero? free?
Is Twentris HD,blocks and numbers free?
Which has better reviews, Zero? or Twentris HD,blocks and numbers?
Do Zero? or Twentris HD,blocks and numbers have ads?
Which is updated more often, Zero? or Twentris HD,blocks and numbers?
Other comparisons
