# Smoosh Lab vs Underdark

The clearest difference is update cadence: Underdark at every 4 days against Smoosh Lab's every 2 months. Underdark also leads on ratings volume (4.1K vs 34) and review sentiment (72% vs 60%). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. Smoosh Lab sells 5 one-off in-app purchases and Underdark sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.6 for Smoosh Lab against 4.8 for Underdark. That said, the two scores are not equally well evidenced: Underdark has 4.1K ratings behind it against 34, so its average is the more settled of the two. Written reviews are what separate them: 60% of Smoosh Lab's written reviews are positive against 72% of Underdark's.

Smoosh Lab ships an update every 2 months, Underdark every 4 days. The most recent releases landed on November 2, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Smoosh Lab | Underdark |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (34 ratings)](https://appshunter.io/ios/app/smoosh-lab/id1171418786/reviews) | **[4.8 (4.1K ratings)](https://appshunter.io/ios/app/underdarkdefense/id6482025287/reviews)** |
| Number of ratings | 34 | **4.1K** |
| Positive reviews | 60.0% of reviews | **72.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 2 months | **Every 4 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 181 MB | 520 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Curious Labs](https://appshunter.io/developer/309017449) | [SeungHo Chung](https://appshunter.io/developer/1626940418) |

## What reviewers say

### Smoosh Lab

[App page](https://appshunter.io/ios/app/smoosh-lab/id1171418786)

Engage in a challenging puzzle game where you can create and share your own levels. Master a variety of puzzles, customize your experience, and compete with friends in an ever-expanding world of creative challenges.

**Highlights:** Master 100 challenging puzzles, Create unlimited levels, Share creations with friends, Solve endless community puzzles, Play at your own pace, Customize Blop shapes and lab themes

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Purchase 2,500 Drops | $0.99 | one-time |
| Remove Ads | $0.99 | one-time |
| Purchase 9,000 Drops | $1.99 | one-time |
| Purchase 20,000 Drops | $2.99 | one-time |
| Purchase 35,000 Drops | $3.99 | one-time |


### Underdark

[App page](https://appshunter.io/ios/app/underdarkdefense/id6482025287)

Defend the Eternal Flame from relentless dark forces in this tactical tower defense game. Strategically place towers, choose powerful buffs, and level up unique heroes to forge an impenetrable defense. Enjoy one-handed gameplay for strategic fun anytime, anywhere.

**Highlights:** Defend the Eternal Flame, One-handed gameplay, Customize defense strategy, Level up heroes, Strategic tower placement, Choose buffs

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| daily_package_01 | $0.99 | one-time |
| blade_pakcage | $2.99 | one-time |
| daily_package_02 | $2.99 | one-time |
| exp_2x | $3.49 | one-time |
| Event Package 2 | $3.99 | one-time |
| add_speed | $7.49 | one-time |
| season_superpass_1 | $7.99 | one-time |
| pack_remove_ads | $7.99 | one-time |
| pack_remove_ads2 | $10.99 | one-time |
| season_hyperpass_1 | $18.99 | one-time |

**What reviewers like**

- 🚀 Addictive gameplay
- 👍 Generous with rewards
- 🚀 Smooth performance
- 👍 No forced ads
- 👍 Unique tower defense mechanics

**What reviewers complain about**

- 🐛 Multiplayer issues
- 🔋 Battery drain
- 🔒 Paywall for progression
- 🔒 Excessive microtransactions
- 🔒 Confusing UI with too many menus

**Reported bugs**

- Goblin tower factory causing game slowdown
- Consecutive login rewards reset after updates
- Invisible towers in multiplayer

**Requested features**

- Ability to rotate towers
- Move towers after placement
- More enemy variety and animations
- Improved co-op mode
- Simplified progression system


## Frequently asked questions

### Is Smoosh Lab free?

Smoosh Lab is free to download, with in-app purchases available.

### Is Underdark free?

Underdark is free to download, with in-app purchases available.

### Which has better reviews, Smoosh Lab or Underdark?

Underdark is rated higher. Smoosh Lab averages 4.6 out of 5 from 34 ratings, while Underdark averages 4.8 from 4.1K ratings.

### Do Smoosh Lab or Underdark have ads?

Both Smoosh Lab and Underdark show ads.

### Which is updated more often, Smoosh Lab or Underdark?

Smoosh Lab ships an update every 2 months, and Underdark every 4 days. Most recently, Smoosh Lab was updated on November 2, 2026 and Underdark on November 5, 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.*