Comparison

Bunker TapTap Defense vs BubbleDuo

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

Head to head
About

Bunker TapTap Defense

Defend a bunker on a contaminated planet by developing and merging random skills. Deploy units with specific skill combinations to fend off endless waves of monsters. Grow stronger after each battle with rewards to face increasingly intense attacks.

Highlights
  • Random skill generation
  • Skill merging for power-ups
  • Unit deployment via skill combinations
  • Endless monster waves
  • Post-battle upgrades
  • Multiple elemental skills (Pyro, Frost, Electro)
Features
Read full description

The last bunker stands on a contaminated planet. Develop skills, merge them, and deploy units to defend against monsters attacking from every direction. ■ Random Skill Development Skills are generated randomly during battle. Use Pyro, Frost, and Electro skills to fend off the incoming monsters. ■ Merge to Grow Stronger Merge skills of the same tier to obtain higher-tier skills. Even low-tier skills can become powerful combat resources through merging. ■ Complete Combinations to Deploy Units Each unit requires a different skill combination. Complete the required combination to deploy powerful units that will join the battlefield and help defend the bunker. ■ Endless Waves The monsters never stop. Repeat skill generation, merging, and unit deployment to survive increasingly intense attacks. ■ Grow After Battle Use battle rewards to upgrade your units and skills. Return with stronger forces and break through higher waves than before. Craft randomly, merge smartly, and summon units with the right combinations. Start defending your bunker now! Customer Support: brd@teamsparta.co Terms of Service: https://rocketdan21.blogspot.com/2025/03/terms-of-service.html

About

BubbleDuo

Features
Read full description

Korean and English / Landscape only / iOS 15.6+, iPhone and iPad Single player is completely free. Online play is free for your first 3 matches; after that only the host needs a one-time purchase. Invited friends always play free.

Screenshots

Bunker TapTap Defense4 screens
BubbleDuo4 screens

Verdict

The call

The clearest difference is ads: BubbleDuo at none against Bunker TapTap Defense's shown. BubbleDuo also leads on update cadence (daily vs every 4 days). On price, in-app purchases, device support and iOS requirement 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. Bunker TapTap Defense sells 32 one-off in-app purchases and BubbleDuo sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Bunker TapTap Defense ships an update every 4 days, BubbleDuo daily. The most recent releases landed on October 31, 2026 and October 29, 2026 respectively.

Scorecard2 real differences · 8 level
Bunker TapTap Defense versus BubbleDuo: the parameters behind the verdict, then further details
ParameterBunker TapTap DefenseBubbleDuo
PriceFreeFree
Rating4.6 (9 ratings) — better—
Positive reviews82.1% of reviews—
Number of ratings9 — better—
Update frequencyEvery 4 daysDaily — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.0 — better15.6
Further details — not scored
Size402 MB60 MB
Age rating4+4+
DeveloperTeamsparta Inc.UI CHAN HONG

In-app purchases

32 purchases

Bunker TapTap Defense

One-time32
  • brd.specialshop.upgradetrigger.0$1.99
  • brd.beginnerpackage.1$2.99
  • brd.specialshop.upgradetrigger.1$6.99
Show 29 more
  • brd.specialshop.reach.1_50$7.99
  • brd.specialshop.unit.berserker$8.99
  • brd.specialshop.unit.guardian$8.99
  • brd.specialshop.unit.rocketman$8.99
  • brd.specialshop.unit.keycat$8.99
  • brd.membership.vvip.monthly$9.99
  • brd.pass.newbie.premium$9.99
  • brd.pass.ark.premium$9.99
  • brd.luckyminion.1$9.99
  • brd.beginnerpackage.3$14.99
  • brd.cargoship.3$17.99
  • brd.pass.skin.premium$19.99
  • brd.luckyminion.2$19.99
  • brd.specialshop.weekly.package.8$21.99
  • brd.specialshop.monthly.package.6$24.99
  • membership.vvip.permanent.discount$24.99
  • brd.specialshop.reach.4_10$29.99
  • brd.specialshop.resonancestone.2$29.99
  • brd.cargoship.4$34.99
  • brd.specialshop.weekly.package.9$34.99
  • brd.membership.vvip.permanent$34.99
  • brd.luckyminion.3$34.99
  • brd.specialshop.reach.4_25$44.99
  • brd.specialshop.monthly.package.9$54.99
  • brd.specialshop.reach.4_50$59.99
  • brd.specialshop.resonancestone.3$59.99
  • brd.luckyminion.4$65.99
  • brd.specialshop.reach.4_75$84.99
  • brd.luckyminion.5$99.99
1 purchases

BubbleDuo

One-time1
  • Network Play$2.99

Questions

Is Bunker TapTap Defense free?
Bunker TapTap Defense is free to download, with in-app purchases available.
Is BubbleDuo free?
BubbleDuo is free to download, with in-app purchases available.
Do Bunker TapTap Defense or BubbleDuo have ads?
Bunker TapTap Defense shows ads; BubbleDuo does not.
Which is updated more often, Bunker TapTap Defense or BubbleDuo?
Bunker TapTap Defense ships an update every 4 days, and BubbleDuo daily. Most recently, Bunker TapTap Defense was updated on October 31, 2026 and BubbleDuo on October 29, 2026.

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