# Bridge Constructor Portal vs Stack Attack

The clearest difference is price: Stack Attack at Free against Bridge Constructor Portal's $1.99. Stack Attack also leads on in-app purchases (none vs 1) and update cadence (every 9 days vs every 2 months). Bridge Constructor Portal's advantage is chart position (#128 vs unranked) and iOS requirement (13.0 vs 17.0). On ads and device support there is nothing between them.

Stack Attack is free to download; Bridge Constructor Portal costs $1.99 up front. Bridge Constructor Portal sells 1 one-off in-app purchase. Stack Attack asks for nothing beyond the download.

Bridge Constructor Portal ships an update every 2 months, Stack Attack every 9 days. The most recent releases landed on October 29, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Bridge Constructor Portal | Stack Attack |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[4.8 (4.1K ratings)](https://appshunter.io/ios/app/bridge-constructor-portal/id1311353234/reviews)** | — |
| Number of ratings | **4.1K** | — |
| Positive reviews | 84.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 9 days** |
| Monetization | Paid | — |
| Best chart rank | **#128** | — |
| Size | 196 MB | 11 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Headup GmbH](https://appshunter.io/developer/503190235) | [Bogdan Kostyuchenko](https://appshunter.io/developer/1502698371) |

## What reviewers say

### Bridge Constructor Portal

[App page](https://appshunter.io/ios/app/bridge-constructor-portal/id1311353234)

**Currently charting:** #128 Top Paid · Puzzle, #200 Top Paid · Simulation (US App Store)

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:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Portal Proficiency | $1.99 | one-time |

**What reviewers like**

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

**What reviewers complain about**

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

**Reported bugs**

- Ads appearing in paid version
- Inconsistent performance on older devices

**Requested features**

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


### Stack Attack

[App page](https://appshunter.io/ios/app/stack-attack-new-shift/id6797849199)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Bridge Constructor Portal free?

Bridge Constructor Portal costs $1.99, and also offers in-app purchases.

### Is Stack Attack free?

Stack Attack is free to download, with no in-app purchases.

### Do Bridge Constructor Portal or Stack Attack have ads?

Neither Bridge Constructor Portal nor Stack Attack shows ads.

### Which is updated more often, Bridge Constructor Portal or Stack Attack?

Bridge Constructor Portal ships an update every 2 months, and Stack Attack every 9 days. Most recently, Bridge Constructor Portal was updated on October 29, 2026 and Stack Attack on October 14, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*