Comparison

空の青さを知る vs Marika's DokiDoki Dungeon

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

Head to head
About

空の青さを知る

Features
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突然降ってきた隕石に含まれるのは未知の物質・・・ しかし、ちえみはすでにその物質を研究していた。 研究を進めていくとその真実が明らかとなっていく。 他の研究員たちと会話を通して、真実を見つけて行こう。

About

Marika's DokiDoki Dungeon

Features
Read full description

- One day when Marika was walking along the beach, she saw a suspicious hole in the ground. When she approached and peeked in, she was quickly sucked in. The underground was like a maze, and there were many scary monsters inside. Can Marika escape safely by using fallen magic leaves and orbs? This is an action game in a maze that changes every time. The underground extends up to 10 floors. There is a strong master monster on each floor. If you can defeat the super master monster at the bottom, you may be able to escape. It seems that the creatures on the beach are also trapped in this hole. It may be a good thing if you help them.

Screenshots

空の青さを知る3 screens
Marika's DokiDoki Dungeon4 screens

Verdict

The call

The clearest difference is in-app purchases: 空の青さを知る at none against Marika's DokiDoki Dungeon's 1. 空の青さを知る also leads on ads (none vs shown). Marika's DokiDoki Dungeon's advantage is iOS requirement (13.0 vs 15.5). On price, update cadence 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

Both are free to download. Marika's DokiDoki Dungeon sells 1 one-off in-app purchase. 空の青さを知る asks for nothing beyond the download.

UpkeepUpdate frequency

空の青さを知る ships an update monthly, Marika's DokiDoki Dungeon every 2 months. Both last shipped on October 25, 2026.

Scorecard3 real differences · 3 level
空の青さを知る versus Marika's DokiDoki Dungeon: the parameters behind the verdict, then further details
Parameter空の青さを知るMarika's DokiDoki Dungeon
PriceFreeFree
Update frequencyMonthly — betterEvery 2 months
AdsNo — betterYes
In-app purchasesNo — betterYes
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.513.0 — better
Further details — not scored
Size86 MB28 MB
Age rating9+4+
Developerchiaki matsudaMihoko Araki

In-app purchases

None

空の青さを知る

No in-app purchases

1 purchases

Marika's DokiDoki Dungeon

One-time1
  • No Ads$1.99

Questions

Is 空の青さを知る free?
空の青さを知る is free to download, with no in-app purchases.
Is Marika's DokiDoki Dungeon free?
Marika's DokiDoki Dungeon is free to download, with in-app purchases available.
Do 空の青さを知る or Marika's DokiDoki Dungeon have ads?
Marika's DokiDoki Dungeon shows ads; 空の青さを知る does not.
Which is updated more often, 空の青さを知る or Marika's DokiDoki Dungeon?
空の青さを知る ships an update monthly, and Marika's DokiDoki Dungeon every 2 months. Most recently, 空の青さを知る was updated on October 25, 2026 and Marika's DokiDoki Dungeon on October 25, 2026.

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