Comparison

Balls Gravity vs DropOS

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

Head to head
About

Balls Gravity

Features
Read full description

Manipulate gravity to help the balls reach the goal

About

DropOS

Engage in a physics-based puzzle game where you strategically drop marbles into a contraption. Plan the sequence of drops to guide each marble into its matching bin, with each marble's passage altering the machine for the next.

Highlights
  • Physics-based contraption puzzles
  • Strategic marble dropping
  • 100 hand-designed levels
  • Weekly leaderboard
  • Earn in-game cogs
  • Bonus brass pin board
Read full description

A da Vinci workshop, rendered in brass and gravity. In a lantern-lit workshop of brass and walnut, a marble waits at the top of a machine you cannot steer. Drag it into the top funnel and let go. Real gravity takes over, and the marble rolls, tips, and tumbles through the fixed contraption until it lands, ideally, in a bin that matches it. Then look again. Every piece that marble crossed has changed for the marble behind it. You plan the sequence. Physics does the rest. You never steer a marble in flight. You read the machine, then choose the order you drop them in. - The see-saw bit tips one way, then the other. The marble crossing it reroutes the next one. - The rotor does not toggle. It counts forward to its next exit with every pass. - The remote lever throws a switch from across the board. - The waterwheel never stops turning, so timing matters as much as logic. - The felt slows a marble to a crawl. It changes how late a marble arrives, never where it lands. - The wax seal carries the first marble across, then breaks. Every marble behind it drops through. Every marble in a bin that matches it, every bin filled, and the level is solved. A misfire is not a wall. Press the red knob and the machine re-cocks itself, ready for a new order. Walking out on a run already in motion costs your streak, so the machine asks first. What's inside - 100 hand-designed levels, rated one to five in difficulty - One new idea at a time: no two pieces debut on the same board - More waiting deeper in: the gilded marble, the cam tongue, the trapdoor, the pendulum, the drumskin, and the press - A weekly boards leaderboard to climb - Earn cogs as you play and grow your purse - The Cascade, a bonus brass pin board: no randomness in the drop, just physics - Three brass instruments to earn and spend: the Hourglass, the Blueprint, and the Apprentice Built like a puzzle box. Every surface is warm brass, walnut, or aged parchment, and every word is set in EB Garamond, the serif of an old draftsman's manual. Yours to play, quietly. No ads. No sign-in. No ad-tracking or ad-targeting software. DropOS needs no connection to play; anything synced for the leaderboard is anonymous by default. For anyone who loved the marble-drop puzzlers of the late 1990s, and for anyone meeting one for the first time.

Screenshots

Balls Gravity3 screens
DropOS4 screens

Verdict

The call

The clearest difference is ads: DropOS at none against Balls Gravity's shown. DropOS also leads on update cadence (every 6 days vs every 33 months). Balls Gravity's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 18.0). On price and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Balls Gravity ships an update every 33 months, DropOS every 6 days. The most recent releases landed on October 2, 2026 and October 11, 2026 respectively.

Scorecard4 real differences · 6 level
Balls Gravity versus DropOS: the parameters behind the verdict, then further details
ParameterBalls GravityDropOS
PriceFreeFree
Rating—5.0 (2 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—2 — better
Update frequencyEvery 33 monthsEvery 6 days — better
AdsYesNo — better
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS12.0 — better18.0
Further details — not scored
Size53 MB28 MB
Age rating17+4+
DeveloperMarco AndreottiLaunchKitOS

In-app purchases

None

Balls Gravity

No in-app purchases

None

DropOS

No in-app purchases

Questions

Is Balls Gravity free?
Balls Gravity is free to download, with no in-app purchases.
Is DropOS free?
DropOS is free to download, with no in-app purchases.
Do Balls Gravity or DropOS have ads?
Balls Gravity shows ads; DropOS does not.
Which is updated more often, Balls Gravity or DropOS?
Balls Gravity ships an update every 33 months, and DropOS every 6 days. Most recently, Balls Gravity was updated on October 2, 2026 and DropOS on October 11, 2026.

Other comparisons