Beetle Museum vs KAII
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Beetle Museum
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Create your own insect museum! Lots of beetles, stag beetles, butterflies, and more! Build Your Own Insect Museum! Explore forests and fields to discover over 300 species of beetles, stag beetles, butterflies, and other insects. Display your collection in your very own museum and complete the ultimate insect encyclopedia. Features Collect 300+ insects Explore forests and catch rare bugs Build and customize your own museum Complete the insect encyclopedia Battle in exciting Beetle Sumo matches More insects and content coming soon! Perfect for insect lovers, collectors, kids, and anyone who enjoys relaxing collection games.
KAII
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【KAII-ROKU — You are the last Sealer】 The creatures that should have vanished are stirring once more. Yokai, cryptids (UMA), and the urban legends whispered in the dark— hunt down 150 mysterious beings and seal them with your own hands. ■ Timing-Based Sealing Battles Tap the instant the shrinking spirit circle closes in. Nail a PERFECT for 1.5x power. Easy to learn, tense to master. ■ Explore 5 Haunted Spots Shrine → School → Abandoned Village → Sea of Trees → Lake. The deeper you go, the more fearsome the creatures. New areas unlock as you progress. ■ Forge Talismans & Amulets Upgrade your attack "Fuda" talismans and defense "Omamori" amulets across 6 tiers. Collect spirit coins, grow stronger, and take on tougher yokai. ■ Complete the Codex Every sealed creature is recorded in your bestiary. Collect all 150 yokai, cryptids, and urban legends—check their rarity, stats, and category. ■ Perfect for players who love ・Yokai, cryptids, and Japanese folklore ・Collecting and completing bestiaries ・Quick one-handed games for short breaks ・Dark, atmospheric Japanese horror
Screenshots
Verdict
The clearest difference is in-app purchases: KAII at none against Beetle Museum's 3. KAII also leads on update cadence (every 6 weeks vs every 3 months). On price, ads, 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
Both are free to download. Beetle Museum sells 3 one-off in-app purchases. KAII asks for nothing beyond the download.
Beetle Museum ships an update every 3 months, KAII every 6 weeks. The most recent releases landed on September 23, 2026 and September 25, 2026 respectively.
| Parameter | Beetle Museum | KAII |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 months | Every 6 weeks — better |
| Ads | Yes | Yes |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 13.0 |
| Further details — not scored | ||
| Size | 893 MB | 78 MB |
| Age rating | 4+ | 12+ |
| Developer | Yasuhiro Mizuki | yota hojo |
In-app purchases
Beetle Museum
- Gem Add 10$0.99
- Gem Add 100$4.99
- Gem Add 1,000$9.99
KAII
No in-app purchases









