Comparison

Find 5 Differences Train Brain vs DropOS

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

Head to head
About

Find 5 Differences Train Brain

Embark on a visual adventure to find hidden differences between seemingly identical pictures. Test your focus and speed with challenging levels and a ticking timer. Utilize helpful boosters to overcome difficult puzzles and enjoy endless fun.

Highlights
  • Find hidden differences
  • Challenging levels
  • Pesky timer
  • Dazzling boosters
  • Loads of levels
  • Rewarding gameplay
Features
Read full description

We hope that Find 5 Differences Train Brain is exactly what you've been looking for. No stone should be left unturned on your puzzling and picturesque adventure. Embark with us on an endless hunt for hidden differences, dazzling boosters, and infinite joy along the way. Your brain will be tested time and again in spotting the smallest alteration on challenging levels. Every picture seemingly identical or easy as 1-2-3 will require your vigilant focus or a pesky timer may beat you to it. Sounds about right? Dynamite! Oh well.. we meant Download, hope you got the idea. Why bother you may ask? - Loads of Levels: Never face the same challenge twice, keep the excitement smooth as ice. - Rewarding Gameplay: The more levels you will beat, the merrier you get the treat. - Dazzling Boosters: If ever level gets too tough, just use some of the good staff.. - Play on the fly: Whether you are on the go or planning to take something slow, levels ain't taking long it's time for you to play along! In a nutshell Find 5 Differences Train Brain is not another boring puzzle. But rather anything and everything you need it to be. Be advised, highly addictive content inside =D

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

Find 5 Differences Train Brain4 screens
DropOS4 screens

Verdict

The call

The clearest difference is review sentiment: DropOS at 100% against Find 5 Differences Train Brain's 70%. DropOS also leads on rating (5.0 vs 4.6) and update cadence (every 6 days vs every 3 weeks). Find 5 Differences Train Brain's advantage is ratings volume (1.5K vs 2) and device support (3 vs 1). On price, ads, in-app purchases and monetization model 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.

ReceptionRating · Positive reviews · Number of ratings

DropOS holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Find 5 Differences Train Brain has 1.5K ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 70% of Find 5 Differences Train Brain's written reviews are positive against 100% of DropOS's.

UpkeepUpdate frequency

Find 5 Differences Train Brain ships an update every 3 weeks, DropOS every 6 days. The most recent releases landed on October 8, 2026 and October 11, 2026 respectively.

Scorecard6 real differences · 4 level
Find 5 Differences Train Brain versus DropOS: the parameters behind the verdict, then further details
ParameterFind 5 Differences Train BrainDropOS
PriceFreeFree
Rating4.6 (1.5K ratings)5.0 (2 ratings) — better
Positive reviews70.0% of reviews100.0% of reviews — better
Number of ratings1.5K — better2
Update frequencyEvery 3 weeksEvery 6 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS13.0 — better18.0
Further details — not scored
Size136 MB28 MB
Age rating4+4+
DeveloperSmart Project GmbHLaunchKitOS

Customer experience

Find 5 Differences Train Brain

All ratings1,450 ratings
Positive91.7%
Neutral6.0%
Negative2.3%
Written reviews10 reviews
Positive70.0%
Neutral10.0%
Negative20.0%

DropOS

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Find 5 Differences Train Brain

No in-app purchases

None

DropOS

No in-app purchases

Questions

Is Find 5 Differences Train Brain free?
Find 5 Differences Train Brain is free to download, with no in-app purchases.
Is DropOS free?
DropOS is free to download, with no in-app purchases.
Which has better reviews, Find 5 Differences Train Brain or DropOS?
DropOS is rated higher. Find 5 Differences Train Brain averages 4.6 out of 5 from 1.5K ratings, while DropOS averages 5.0 from 2 ratings.
Do Find 5 Differences Train Brain or DropOS have ads?
Neither Find 5 Differences Train Brain nor DropOS shows ads.
Which is updated more often, Find 5 Differences Train Brain or DropOS?
Find 5 Differences Train Brain ships an update every 3 weeks, and DropOS every 6 days. Most recently, Find 5 Differences Train Brain was updated on October 8, 2026 and DropOS on October 11, 2026.

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