Comparison

Osmos vs Bridge Constructor Portal

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

Head to head
About

Osmos

Navigate a cosmic world as a galactic mote. Absorb smaller organisms to grow while avoiding larger predators. This physics-based survival game features stunning graphics and an ambient soundtrack.

Highlights
  • Physics-based gameplay
  • Absorb smaller organisms to grow
  • Avoid larger predators
  • Stellar graphics
  • Ambient soundtrack
  • 72 levels across 8 worlds
  • Multiplayer mode
Features
Read full description

** Apple Design Award winner and iPad Game of the Year! ** Enter the Darwinian world of a galactic mote. To survive, absorb smaller organisms and grow—but beware of larger predators. Osmos features unique physics-based play, stellar graphics, and a hypnotic ambient soundtrack. Absorb or be absorbed! “The ultimate ambient experience” — Gizmodo “Beyond doubt, a work of genius" — GameAndPlayer.net THE CRUX: you must grow by absorbing smaller motes, but to propel yourself you must eject matter behind you, causing you to shrink. From this delicate balance, Osmos leads the player through floating playgrounds, competitive petri dishes, deep solar systems, and more. “Named as iPad Game of the Year for a reason, Osmos is a fantastic game. A combination of physics, survival and classic eat em up” — WeDoCode “Whether you're a child at heart who likes mucking about with single-cell organisms, or a strategist with a physics degree, this game will appeal to everyone.” — App Store review AWARDS / recognition: * "iPad Game of the Year" and "iPhone App of the Week" — Apple * Apple Design Award winner (iPad version) * #1 Top iPhone Game — IGN * iPad Game of the Year — TUAW * Game of the Year — Create Digital Music * Editor's Choice — Wired, Macworld, IGN, GameTunnel, and more... * Best in Show — IndieCade * Vision Award — Independent Games Festival * Coolest Atmosphere — IGN * Best Soundtrack — IGN * Most Innovative Game — Best App Ever Awards, Pocket Gamer * Many top lists including Kotaku, PAX, TouchArcade, iLounge, APPera, IFC, and more... FEATURES: * 72 levels spanning 8 distinct worlds: Ambient, Antimatter, Solar, Sentient, Repulsor, Impasse, Warped Chaos, and Epicycles. * Multiplayer! (more info below.) * Award-winning electronic soundtrack by Loscil, Gas, High Skies, Biosphere, Julien Neto, and more. * Endless replay value: play random versions of any level in Arcade mode. * Seamlesss multitouch controls: swipe to warp time, tap anywhere to eject mass, pinch to zoom… * Time-warping: slow down the flow of time to outmaneuver agile opponents; speed it up to raise the challenge. * Confront four distinct AI opponents: the Ovarium, the Biophobe, the Nemocyte… and the deadly Ferax. * 13 single-player and 15 multiplayer achievements. * Progress synced via iCloud. MULTIPLAYER * Play against your friends and enemies, locally (via wi-fi), or over the Internet. * 6 distinct Arenas: Ambient, Impasse, Solar, Warped Chaos, Epicycles, and introducing… Antimatter Impasse. * iPad vs. iPhone play supported. “a beautiful, absorbing experience." — IGN 5/5 - Macworld Editor’s Choice - “One of the best games we’ve played so far this year. An utterly serene, yet fiendishly complicated game that deserves a place in every iPad owners collection.” — MacWorld “The best iPad game yet.” — IGN 4/4, Must Have - “We are more than overwhelmed by Osmos for iPad… The game design is thoughtful and intuitive, new level structures are flawless, and the visuals are stunning yet simplistic… every iPad owner should have Osmos on their device. You just won’t find another experience quite like it.” — Slide To Play “What iPad Gaming Should Be All About” — Gizmodo “The first proper breakout hit for the iPad. Osmos feels so natural and enjoyable to play, even when the difficulty ramps up and you find yourself repeatedly careening into a giant gaseous enemy.” — Wired “It’s the best iPad game on the App Store” — MTV Multiplayer 5/5 - “Osmos is an absolute must that will change the way you think of games, and what you expect from them.” — AppAdvice “Beyond doubt, a work of genius... a relaxing, meditative experience about going with the flow... It all adds up to something otherworldly and just . . . incredible.” — GameAndPlayer.net

About

Bridge Constructor Portal

Construct bridges, ramps, and slides in a science lab environment. Utilize iconic gadgets like portals and gels to guide vehicles through challenging test chambers while avoiding hazards. Solve physics puzzles with guidance from a familiar AI.

Highlights
  • Bridge and ramp construction
  • Portal gadget integration
  • Physics-based puzzles
  • Hazard evasion
  • GLaDOS voice guidance
  • Test chamber challenges
Features
Read full description

Enter the Aperture Science Enrichment Center and experience Bridge Constructor Portal – the unique merging of the classic Portal™ and Bridge Constructor™ games. As a new employee in the Aperture Science test lab, it's your job to build bridges, ramps, slides, and other constructions in 60 test chambers and get the Bendies safely across the finish line in their vehicles. Make use of the many Portal gadgets, like portals, propulsion gel, repulsion gel, aerial faith plates, cubes, and more to bypass the sentry turrets, acid pools and laser barriers, solve switch puzzles, and make it through the test chambers unscathed. Let Ellen McLain, the original voice of GLaDOS, guide you through the tutorial, and learn all the tips and tricks that make a true Aperture Science employee. The bridge is a lie! Features: - The merging of two worlds: the first Bridge Constructor™ with an official Portal™ license - Create complex constructions in the Aperture Science labs - Let GLaDOS accompany you through tricky physics adventures - Use portals, aerial faith plates, propulsion gel, repulsion gel, and much more to master the complicated tasks - Evade dangers such as sentry turrets, emancipation grills, laser fields, and acid - Help your Bendies cross the finish line – on their own or in a convoy PORTAL PROFICIENCY DLC Bridge Constructor Portal receives a fresh DLC as hot as a potato: Portal Proficiency Return to the Aperture Science Enrichment Center and experience a brand-new challenge. Finally, you are now able to not only construct bridges, but you can even place portals yourself! It’s just like the real thing! Face up to 30 brain-teasing, remarkably unsafe test chambers in three chapters. Create insane constructions and decide where to place portals to show if you really are proficient in working with Portals. Only the bravest and smartest participants will succeed and receive the Golden Condolence Letter. Features • New Aperture Science test series with 30 brand new, brain-teasing levels • New feature: place the portals in the new test chambers yourself!

Screenshots

Osmos4 screens
Bridge Constructor Portal4 screens

Verdict

The call

The clearest difference is in-app purchases: Osmos at none against Bridge Constructor Portal's 1. Bridge Constructor Portal's advantage is update cadence (every 2 months vs every 7 months) and price ($1.99 vs $3.99). On rating, review sentiment, ads 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

Osmos costs $3.99 and Bridge Constructor Portal $1.99 up front. Bridge Constructor Portal sells 1 one-off in-app purchase. Osmos asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.8 for Osmos against 4.8 for Bridge Constructor Portal. Both are backed by a comparable volume of ratings — 892 and 4.1K respectively. Written reviews are what separate them: 92% of Osmos's written reviews are positive against 84% of Bridge Constructor Portal's.

UpkeepUpdate frequency

Osmos ships an update every 7 months, Bridge Constructor Portal every 2 months. The most recent releases landed on October 17, 2026 and October 18, 2026 respectively.

Scorecard4 real differences · 7 level
Osmos versus Bridge Constructor Portal: the parameters behind the verdict, then further details
ParameterOsmosBridge Constructor Portal
Price$3.99$1.99 — better
Rating4.8 (892 ratings)4.8 (4.1K ratings)
Positive reviews92.3% of reviews — better84.5% of reviews
Number of ratings8924.1K — better
Update frequencyEvery 7 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidPaid
Best chart rank#79 — better#85
DevicesiPhone, iPad, iPod, Apple TV — betteriPhone, iPad, iPod
Requires iOS13.413.0 — better
Further details — not scored
Size48 MB196 MB
Age rating4+4+
DeveloperHemisphere GamesHeadup GmbH

Customer experience

Osmos

All ratings892 ratings
Positive94.4%
Neutral2.2%
Negative3.4%
Written reviews1,212 reviews
Positive92.3%
Neutral3.2%
Negative4.5%

Bridge Constructor Portal

All ratings4,075 ratings
Positive95.3%
Neutral1.7%
Negative2.9%
Written reviews670 reviews
Positive84.5%
Neutral6.1%
Negative9.4%

User reviews

Osmos

From 892 App Store ratings

What we love

  • 🌟 Mesmerizing visuals and aesthetics
  • 🎶 Excellent soundtrack and audio design
  • 🧠 Challenging and thought-provoking gameplay
  • 🕰️ Ability to control time/speed
  • 🕊️ Relaxing and meditative experience

Room to improve

  • 🤯 Frustratingly difficult at times
  • 🔋 Battery drain issues
  • 🖥️ Not optimized for larger screens (iPad)
  • 🔍 Lack of zoom/scale controls

Bridge Constructor Portal

From 4.1K App Store ratings

What we love

  • 🚀 Excellent physics engine
  • 👍 Engaging Portal-themed puzzles
  • 😄 Hilarious GlaDOS commentary
  • 🤖 Seamless integration of Portal elements
  • 💰 Good value for money

Room to improve

  • 🐛 Occasional save data loss issues
  • 🤔 Difficulty ramps up too quickly
  • 🕹️ Controls can be finicky on smaller screens
  • 🎨 Lack of customization options

Bugs and requests

Osmos

Reported bugs

2 issues
  • Crashes on certain devices/OS versions
  • Compatibility issues with newer hardware

Requested features

4 requests
  • More levels and content updates
  • Multiplayer mode improvements
  • Customization options (e.g. music, visuals)
  • Difficulty settings or accessibility options

Bridge Constructor Portal

Reported bugs

2 issues
  • Ads appearing in paid version
  • Inconsistent performance on older devices

Requested features

4 requests
  • Level editor and custom level sharing
  • Leaderboards and challenge modes
  • Ability to skip tutorial levels
  • Cloud sync support for cross-device progress

In-app purchases

None

Osmos

No in-app purchases

1 purchases

Bridge Constructor Portal

One-time1
  • Portal Proficiency$1.99

Questions

Is Osmos free?
Osmos costs $3.99, with no in-app purchases.
Is Bridge Constructor Portal free?
Bridge Constructor Portal costs $1.99, and also offers in-app purchases.
Which has better reviews, Osmos or Bridge Constructor Portal?
Osmos and Bridge Constructor Portal are both rated 4.8 out of 5 on the App Store, from 892 and 4.1K ratings respectively.
Do Osmos or Bridge Constructor Portal have ads?
Neither Osmos nor Bridge Constructor Portal shows ads.
Which is updated more often, Osmos or Bridge Constructor Portal?
Osmos ships an update every 7 months, and Bridge Constructor Portal every 2 months. Most recently, Osmos was updated on October 17, 2026 and Bridge Constructor Portal on October 18, 2026.
Which is more popular, Osmos or Bridge Constructor Portal?
Osmos currently peaks at #79 in the App Store charts, and Bridge Constructor Portal at #85. Chart position reflects recent download velocity rather than total install base.

Other comparisons