# Underdark vs JIGGLEBELL Jigsaw

The clearest difference is update cadence: Underdark at every 4 days against JIGGLEBELL Jigsaw's every 2 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Underdark sells 10 one-off in-app purchases and JIGGLEBELL Jigsaw sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Underdark ships an update every 4 days, JIGGLEBELL Jigsaw every 2 weeks. The most recent releases landed on November 13, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Underdark | JIGGLEBELL Jigsaw |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (4.1K ratings)](https://appshunter.io/ios/app/underdarkdefense/id6482025287/reviews)** | — |
| Number of ratings | **4.1K** | — |
| Positive reviews | 72.1% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 4 days** | Every 2 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 521 MB | 222 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SeungHo Chung](https://appshunter.io/developer/1626940418) | [TENMILES](https://appshunter.io/developer/6809920440) |

## What reviewers say

### 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 growth 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


### JIGGLEBELL Jigsaw

[App page](https://appshunter.io/ios/app/jigglebell-jigsaw/id6818021488)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 광고 제거 | $4.99 | one-time |


## Frequently asked questions

### Is Underdark free?

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

### Is JIGGLEBELL Jigsaw free?

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

### Do Underdark or JIGGLEBELL Jigsaw have ads?

Both Underdark and JIGGLEBELL Jigsaw show ads.

### Which is updated more often, Underdark or JIGGLEBELL Jigsaw?

Underdark ships an update every 4 days, and JIGGLEBELL Jigsaw every 2 weeks. Most recently, Underdark was updated on November 13, 2026 and JIGGLEBELL Jigsaw on October 31, 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.*