Comparison

DigitZ vs Once Upon a Galaxy

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

Head to head
About

DigitZ

This game challenges players to eliminate falling tiles by selecting those that add up to a target number. It offers adjustable difficulty and multiple game modes for a fun and engaging mathematical challenge.

Highlights
  • Falling tile elimination
  • Target number addition
  • Adjustable difficulty tiers
  • Campaign and Marathon modes
  • Bonus advantages
  • Customizable tile sets
Features
Read full description

"Digitz is a fun Tetris-type game, with sneaky math practice thrown in. It is surprisingly fun, and kids will come away with quicker math facts recall. A win-win for parents and kids. Rating: 4 stars (out of 4)" -- USA Today "Digitz is an addictive game that offers a great amount of challenge and fun for any player. Whether you’re a child in school just learning basic arithmetic or a graduate student finishing up calculus, anyone is capable of enjoying this game." -- Greg Young, AppAdvice A HIGHLY ADDICTIVE NUMBERS game where you’re racing to eliminate falling tiles before they reach the top of the screen. FALLING TILES ADD UP TO FUN! The falling tiles have numbers on them and to eliminate them you have to choose the ones that add up to your target number. But there’s strategy involved because you can’t use up too many small numbers or there won’t be enough to beat the level. Your mind has to move in many directions to keep ahead of the game! YOU SET THE PACE You can play DigitZ as a leisurely game or you can up the intensity. Choose from two different types of play, each with three tiers of difficulty and ten levels in each tier. Each game also has three game modes leading to dozens of game combinations of varying complexity and difficulty -- all fun. For the avid gamer there is also a CAMPAIGN mode so you can march through all the levels in order. Or play in MARATHON mode where you can’t stop until the game is won or over. Gain BONUS ADVANTAGES that can give you the edge in completing a level. But choose carefully—not every advantage helps in the same way! STYLE YOUR TILES Add even more interest and challenge to your game by choosing from many different TILE SETS. Some tiles sets make the game more challenging. _____________________________ **CHECK OUT KidgitZ, our fun game for ELEMENTARY AGE kids to practice their addition and multiplication facts. In the App Store now. _____________________________ GIFT US: Click the Buy App button in the App Store. JOIN US: Visit www.tapdreamarts.com and upload a favorite tile of your own. FOLLOW US: twitter.com?#!/tapdream LIKE US: www.facebook.com/profile.php?id=100001873982873

About

Once Upon a Galaxy

Embark on a fantasy card battling adventure where you draft unique captains and their friends to complete quests. Choose your path with diverse characters and strategic gameplay. Experience a game free of ads and AI art, focusing on player choice and engaging battles.

Highlights
  • Fantasy card battling
  • Captain drafting
  • Quest completion
  • Strategic gameplay
  • No AI artwork
  • Asynchronous play
Features
Read full description

Galaxy is FREE to play, has NO ADS, uses NO AI artwork. Will you choose Dorothy as your captain and help her and friends on their journey to complete their quests? Or Dragonmother and discover what will hatch from her dragon egg? Or maybe Indiana Clones, who will "clone" your best three treasures? It's all up to you!

Screenshots

DigitZ4 screens
Once Upon a Galaxy4 screens

Verdict

The call

The clearest difference is price: Once Upon a Galaxy at Free against DigitZ's $0.99. Once Upon a Galaxy also leads on rating (4.8 vs 4.0) and update cadence (fortnightly vs every 38 months). DigitZ's advantage is in-app purchases (none vs 50) and review sentiment (100% vs 83%). On ads 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

Once Upon a Galaxy is free to download; DigitZ costs $0.99 up front. Once Upon a Galaxy sells 44 one-off in-app purchases. DigitZ asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Once Upon a Galaxy holds the better App Store score, 4.8 against 4.0. That said, the two scores are not equally well evidenced: Once Upon a Galaxy has 1.4K ratings behind it against 4, so its average is the more settled of the two. Written reviews complicate that: 100% of DigitZ's written reviews are positive against 83% of Once Upon a Galaxy's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

DigitZ ships an update every 38 months, Once Upon a Galaxy fortnightly. The most recent releases landed on October 12, 2026 and October 30, 2026 respectively.

Scorecard8 real differences · 2 level
DigitZ versus Once Upon a Galaxy: the parameters behind the verdict, then further details
ParameterDigitZOnce Upon a Galaxy
Price$0.99Free — better
Rating4.0 (4 ratings)4.8 (1.4K ratings) — better
Positive reviews100.0% of reviews — better83.4% of reviews
Number of ratings41.4K — better
Update frequencyEvery 38 monthsFortnightly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS10.0 — better15.0
Further details — not scored
Size5 MB195 MB
Age rating4+9+
DeveloperTapDream ArtsMillion Dreams Games

Customer experience

DigitZ

All ratings4 ratings
Positive75.0%
Neutral0.0%
Negative25.0%
Written reviews5 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Once Upon a Galaxy

All ratings1,404 ratings
Positive95.4%
Neutral1.3%
Negative3.3%
Written reviews385 reviews
Positive83.4%
Neutral5.2%
Negative11.4%

Bugs and requests

DigitZ

Not enough reviews yet to summarise bugs or requests.

Once Upon a Galaxy

Reported bugs

3 issues
  • Black screen on startup
  • Infinite loading issues
  • Progression loss after updates

Requested features

5 requests
  • More hero/card variety
  • Improved tutorial and learning tools
  • Offline/save progress mode
  • Cosmetic/non-gameplay monetization
  • Competitive/ranked modes

In-app purchases

None

DigitZ

No in-app purchases

44 purchases

Once Upon a Galaxy

One-time44
  • 600 Gems (September deal)$4.99
  • 600 Gems (July deal)$4.99
  • Welcome Bundle3 variants$4.99
Show 41 more
  • 500 Gems2 variants$4.99
  • October 2026 Galaxy Pass$9.99
  • September 2026 Galaxy Pass$9.99
  • 1300 Gems (August deal)$9.99
  • August 2026 Galaxy Pass$9.99
  • July 2026 Galaxy Pass$9.99
  • June 2026 Galaxy Pass$9.99
  • March 2026 Galaxy Pass$9.99
  • May 2026 Galaxy Pass$9.99
  • April 2026 Galaxy Pass$9.99
  • February 2026 Galaxy Pass$9.99
  • December Galaxy Pass$9.99
  • January 2026 Galaxy Pass$9.99
  • November 2025 Galaxy Pass$9.99
  • October 2025 Galaxy Pass$9.99
  • September 2025 Galaxy Pass$9.99
  • July 2025 Galaxy Pass$9.99
  • August 2025 Galaxy Pass$9.99
  • June 2025 Galaxy Pass$9.99
  • May 2025 Galaxy Pass$9.99
  • 1,100 Gems2 variants$9.99
  • April 2025 Galaxy Pass$9.99
  • March 2025 Galaxy Pass$9.99
  • February 2025 Galaxy Pass$9.99
  • Galaxy Pass$9.99
  • Swishbuckler Chromaria Bundle$14.99
  • Chromarian Chromaria Bundle$14.99
  • Remi Chromaria Bundle$14.99
  • Galaxy Reroll$14.99
  • Candylar Reroll$14.99
  • Mythbound Reroll$14.99
  • Thanatos Mythbound Bundle$14.99
  • Baldr Mythbound Bundle$14.99
  • Hecate Mythbound Bundle$14.99
  • Candylar Goat T Preorder$14.99
  • Candylar Beanstalk Preorder$14.99
  • Candylar Candy Pandy Preorder$14.99
  • 2,300 Gems2 variants$19.99
  • Winter Bundle$29.99
  • 6,000 Gems$49.99
  • 14,000 Gems2 variants$99.99

Questions

Is DigitZ free?
DigitZ costs $0.99, with no in-app purchases.
Is Once Upon a Galaxy free?
Once Upon a Galaxy is free to download, with in-app purchases available.
Which has better reviews, DigitZ or Once Upon a Galaxy?
Once Upon a Galaxy is rated higher. DigitZ averages 4.0 out of 5 from 4 ratings, while Once Upon a Galaxy averages 4.8 from 1.4K ratings.
Do DigitZ or Once Upon a Galaxy have ads?
Neither DigitZ nor Once Upon a Galaxy shows ads.
Which is updated more often, DigitZ or Once Upon a Galaxy?
DigitZ ships an update every 38 months, and Once Upon a Galaxy fortnightly. Most recently, DigitZ was updated on October 12, 2026 and Once Upon a Galaxy on October 30, 2026.

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