Comparison

Grav Box vs Building Blocks Master

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

Head to head
About

Grav Box

Control gravity with a tap and hold to manipulate objects. Customize their appearance, explore dynamic physics, and engage in arcade challenges with leaderboards and achievements.

Highlights
  • Tap and hold to control gravity
  • Customize grav colors and emojis
  • Dynamic backgrounds and physics effects
  • Arcade mode with achievements
  • Global leaderboards
  • In-game events like black holes
Features
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Grav Box places gravity at your fingertips. Tap and hold on the screen to control the gravitational field around your gravs and manipulate them in limitless ways. Customize your entire experience by setting gravs to any color or emoji, explore dynamic backgrounds and physics effects, and even modify the effects of gravity itself. With custom preferences set, head to the arcade to unlock achievements and compete against global leaderboards. Be prepared for black holes, gravitational shifts, and many other in-game events that will impact your gameplay.

About

Building Blocks Master

Features
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This is a building block app. It can be played safely by people of all ages, from young children to seniors. In particular, a sample is included by default so that it can be enjoyed as a block-breaking game. Of course, you can also enjoy using your own created building blocks as a block-breaking game. Main features are as follows: 1. There are 14 different building block shapes. 2. In addition to solid colors, you can choose from 14 different textures for the block surfaces. 3. An infinite number of solid colors can be set. 4. Blocks can be easily added up, down, left, right, and right. 5. Blocks can be added continuously with a long press tap gesture. 6. The shape and orientation of blocks can be changed later. 7. The size (length, width, and height) can be freely changed. 8. The surrounding (wall) colors can be selected from 10 options, including 6 realistic backgrounds and 4 solid colors, allowing you to enjoy a unique world view. 9. You can export your masterpiece as a PNG file via screenshot. 10. With the video creation mode, you can record and publish videos of your completed creations and the process of creating them. 11. Since gravity is not applied, you can set blocks while they are still in the air. 12. Since gravity can be applied later, you can have fun destroying your creations all at once and then recreating them. 13. With the block-breaking mode, you can enjoy it as a game. 14. With the AR mode, you can create and display creations in real space. This simple building block app fosters limitless creativity. We hope that users of all ages will enjoy it.

Screenshots

Grav Box4 screens
Building Blocks Master4 screens

Verdict

The call

The clearest difference is price: Grav Box at Free against Building Blocks Master's $0.99. Grav Box also leads on update cadence (every 5 months vs every 12 months) and iOS requirement (14.0 vs 18.0). Building Blocks Master's advantage is in-app purchases (none vs 10) and ads (none vs shown). On 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

Grav Box is free to download; Building Blocks Master costs $0.99 up front. Grav Box sells 10 one-off in-app purchases. Building Blocks Master asks for nothing beyond the download.

UpkeepUpdate frequency

Grav Box ships an update every 5 months, Building Blocks Master every 12 months. The most recent releases landed on October 13, 2026 and October 8, 2026 respectively.

Scorecard5 real differences · 5 level
Grav Box versus Building Blocks Master: the parameters behind the verdict, then further details
ParameterGrav BoxBuilding Blocks Master
PriceFree — better$0.99
Rating4.8 (26 ratings) — better—
Positive reviews96.0% of reviews—
Number of ratings26 — better—
Update frequencyEvery 5 months — betterEvery 12 months
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, Mac
Requires iOS14.0 — better18.0
Further details — not scored
Size10 MB1.1 GB
Age rating4+4+
DeveloperGianluca Caprarohideyuki kubo

In-app purchases

10 purchases

Grav Box

One-time10
  • Gold Blocks (100) Pack$0.99
  • Light Portal$0.99
  • Dark Portal$0.99
Show 7 more
  • Grav Box$0.99
  • Midnight$0.99
  • Daybreak$0.99
  • Beach$0.99
  • Jungle$0.99
  • Mist$0.99
  • Gold Blocks (1000) Pack$4.99
None

Building Blocks Master

No in-app purchases

Questions

Is Grav Box free?
Grav Box is free to download, with in-app purchases available.
Is Building Blocks Master free?
Building Blocks Master costs $0.99, with no in-app purchases.
Do Grav Box or Building Blocks Master have ads?
Grav Box shows ads; Building Blocks Master does not.
Which is updated more often, Grav Box or Building Blocks Master?
Grav Box ships an update every 5 months, and Building Blocks Master every 12 months. Most recently, Grav Box was updated on October 13, 2026 and Building Blocks Master on October 8, 2026.

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