Comparison

Zero+ vs Spark7

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

Head to head
About

Zero+

This is a fun and challenging iOS puzzle game where players combine numbered blocks to create zeros. Swipe blocks to merge them and solve increasingly complex levels. Enjoy a vast number of stages with unique block types.

Highlights
  • Swipe blocks to merge
  • Combine positive and negative numbers
  • Create all zeros
  • 120+ levels
  • New block types
Features
Read full description

A simple iOS puzzle game that is devilishly fun to play. Just add positive and negative numbered blocks to one another to make all zeros. • Easy to play: swipe blocks left, right, up, or down • Lots to do: 120 levels and counting... • Never the same: new levels bring new kinds of blocks

About

Spark7

This electric number puzzle game challenges your brain with dropping numbered balls and creating explosive chain reactions. It's designed by a brain scientist to improve cognitive skills like spatial reasoning and problem-solving.

Highlights
  • Numbered ball dropping gameplay
  • Explosive chain reaction combos
  • Global leaderboards and replays
  • Cognitive skill enhancement
  • Satisfying and engaging puzzles
  • Drop7 alternative
Features
Read full description

This electric number puzzle will rewire your brain and may make you miss your bus stop. Spark7 is like Drop7 on steroids – as if Tetris, Dr. Mario, CandyCrush, Sudoku, and 2048 got together and had a baby to become even more satisfying and engaging. The gameplay seems simple at first. Just drop numbered balls into the grid, match them by count, and chain explosive combos (“surges”) to boost your score. But very quickly, you’ll find yourself gradually understanding the game’s hidden nuances over time, continuing to improve your skills and your brainpower during every moment of play. You’ll also find yourself obsessing over the global top scores for each individual Game ID, and cranking your “replays” to work up the Leaderboard. The best part is that Spark7 was created by a literal brain scientist. Each game mechanic is meticulously crafted to exercise your spatial reasoning, working memory, executive function, processing speed, attention span, problem solving, and mental resilience. If the disappearance of Drop 7 left a hole in your puzzle life, Spark7 fills it — and then some. This is the number drop game you didn't know you needed. Download Spark7 and light up your brain.

Screenshots

Zero+4 screens
Spark74 screens

Verdict

The call

The clearest difference is in-app purchases: Zero+ at none against Spark7's 6. Zero+ also leads on ratings volume (178 vs 47) and iOS requirement (7.0 vs 16.0). Spark7's advantage is update cadence (every 6 days vs monthly). On price, rating, review sentiment and ads 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. Spark7 sells 6 one-off in-app purchases. Zero+ asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.8 for Zero+ against 4.9 for Spark7. Both are backed by a comparable volume of ratings — 178 and 47 respectively. Written reviews are what separate them: 97% of Zero+'s written reviews are positive against 100% of Spark7's.

UpkeepUpdate frequency

Zero+ ships an update monthly, Spark7 every 6 days. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

Scorecard5 real differences · 5 level
Zero+ versus Spark7: the parameters behind the verdict, then further details
ParameterZero+Spark7
PriceFreeFree
Rating4.8 (178 ratings)4.9 (47 ratings) — better
Positive reviews96.5% of reviews100.0% of reviews — better
Number of ratings178 — better47
Update frequencyMonthlyEvery 6 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS7.0 — better16.0
Further details — not scored
Size3 MB133 MB
Age rating4+4+
DeveloperSaturnBoy, LLCAndrew Cohen

Customer experience

Zero+

All ratings177 ratings
Positive96.0%
Neutral3.4%
Negative0.6%
Written reviews115 reviews
Positive96.5%
Neutral2.6%
Negative0.9%

Spark7

All ratings47 ratings
Positive97.9%
Neutral2.1%
Negative0.0%
Written reviews30 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Zero+

Reported bugs

4 issues
  • Screen grays out when undoing moves too quickly
  • Tiles occasionally unresponsive to input
  • App freezes requiring restart
  • Background music/podcasts get blocked during gameplay

Requested features

7 requests
  • More levels or additional puzzle packs
  • Hints system for difficult puzzles
  • Updated and more modern visual design
  • Allow background music while playing
  • Skip level feature (some users noted this exists)
Show 2 more
  • User-generated challenges or community puzzles
  • Higher difficulty levels

Spark7

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Zero+

No in-app purchases

6 purchases

Spark7

One-time6
  • 1 Replay$0.99
  • Remove Ads Discount$1.99
  • 3 Replays$1.99
Show 3 more
  • Remove Ads$2.99
  • 10 Replays$3.99
  • 50 Replays$9.99

Questions

Is Zero+ free?
Zero+ is free to download, with no in-app purchases.
Is Spark7 free?
Spark7 is free to download, with in-app purchases available.
Which has better reviews, Zero+ or Spark7?
Spark7 is rated higher. Zero+ averages 4.8 out of 5 from 178 ratings, while Spark7 averages 4.9 from 47 ratings.
Do Zero+ or Spark7 have ads?
Neither Zero+ nor Spark7 shows ads.
Which is updated more often, Zero+ or Spark7?
Zero+ ships an update monthly, and Spark7 every 6 days. Most recently, Zero+ was updated on October 24, 2026 and Spark7 on October 28, 2026.

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