Comparison

Drilloot vs 石臼2

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

Head to head
About

Drilloot

Embark on a solo mining expedition on an alien planet, digging through diverse strata to collect resources and complete missions. Upgrade your equipment, discover ancient relics, and unlock permanent skills as you uncover the planet's secrets. Enjoy offline progression and a relaxing, one-handed gameplay experience.

Highlights
  • One-handed idle mining
  • Six distinct strata to explore
  • 40 survey quests
  • Gear upgrades
  • Relic system with refining and selling
  • Prestige and GP skills
  • Offline progression
Features
Read full description

Welcome to Planet 7. Drill deep. Discover more. You're a survey engineer assigned to an uncharted planet. Your job: dig through the strata, collect samples, and complete missions for your crew — all while uncovering the mystery buried beneath. ◆ ONE-HANDED IDLE MINING Fully portrait, tap-to-play. Perfect for short commutes or long relaxing sessions. ◆ SIX DISTINCT STRATA Topsoil, red clay, limestone, crystal, hot-ore, and magma core. Each layer brings new geology and rarer resources. The deeper you go, the more valuable the find. ◆ 40 SURVEY QUESTS Two crew members — a mechanic and a researcher — send you on survey missions. Complete them to unlock deeper regions and reveal the planet's secrets. ◆ UPGRADE YOUR GEAR Drill speed, expedition bag capacity, and the auto-system. Dig faster, carry more, and automate the grind. ◆ RELIC SYSTEM (NEW) Ancient relics surface as you mine. Equip them to boost your stats, spend coins to "refine" their tiers, and sell the ones you don't need. Hunt, hold, equip, refine, sell — curate your own build. ◆ PRESTIGE + GP SKILLS Clear all 40 quests to unlock prestige. Earn GP and unlock powerful permanent GP skills — including relic find rate and refine cost reduction. ◆ INCREASING CHALLENGE Quest requirements grow slightly each prestige. Up to 15 laps total. ◆ OFFLINE PROGRESSION Your drill keeps running while you're away. Come back to a survey log of what you've collected. ◆ AUDIO Background music + sound effects, with volume and on/off settings that apply instantly. ◆ FEATURES - 100% offline play - No account required - Local save - stays on your device - English & Japanese supported Ads are shown by default. The optional "Remove Ads" in-app purchase disables them permanently. Dig in. The planet is waiting.

About

石臼2

Features
Read full description

石臼を回して、粉を積み上げろ。 【ゲームの流れ】 画面の石臼を指でぐるぐる回すと、豆の粉(コナ)が空中に舞い散ります。 台座を動かして粉をキャッチするたびにコナが貯まり、アップグレードやプレステージで さらに強くなっていく、シンプルで奥深いインクリメンタルゲームです。 【コンボ&フィーバー】 ・連続キャッチでコンボ倍率が上昇(最大x100コンボで虹色エフェクト!) ・金粉を一定数集めるとフィーバータイム突入、生産量が爆発的に増加 ・コンボを維持する緊張感がクセになる 【40種以上の豆】 基本豆から、幻の豆・宇宙豆・フェニックスシードまで多彩な豆が存在。 最大3枠のブレンドスロットで豆を組み合わせると、フレーバー効果が発動。 あなただけのオリジナルブレンドを見つけよう。 【転生(プレステージ)システム】 コナが一定量に達したら転生! 転生ポイントで永続アップグレードを解放し、さらなる高みへ。 転生を重ねるほど加速度的に強くなる爽快感。 【豊富なコンテンツ】 ・12種のアップグレード(生産量・バースト・クリティカル・自動回転 など) ・14種の転生アップグレード(永続ボーナス・フィーバー強化 など) ・41種の実績 ・20種の台座スキン ・オフライン生産(ゲームを閉じていても粉を生産) シンプルな操作で、じっくり遊べる放置系インクリメンタルゲーム。 ちょっとした隙間時間にも、長時間のやり込みにも対応。 さあ、石臼を回そう。

Screenshots

Drilloot4 screens
石臼24 screens

Verdict

The call

The clearest difference is in-app purchases: 石臼2 at none against Drilloot's 3. Drilloot's advantage is update cadence (monthly vs every 2 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Drilloot sells 3 one-off in-app purchases. 石臼2 asks for nothing beyond the download.

UpkeepUpdate frequency

Drilloot ships an update monthly, 石臼2 every 2 months. The most recent releases landed on October 24, 2026 and October 16, 2026 respectively.

Scorecard2 real differences · 6 level
Drilloot versus 石臼2: the parameters behind the verdict, then further details
ParameterDrilloot石臼2
PriceFreeFree
Positive reviews60.0% of reviews—
Update frequencyMonthly — betterEvery 2 months
AdsYesYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS14.0 — better15.6
Further details — not scored
Size101 MB72 MB
Age rating4+4+
DeveloperSHOTA OHTSUKAHirokazu Oshimo

In-app purchases

3 purchases

Drilloot

One-time3
  • Relic Pass$2.99
  • Remove Ads$2.99
  • Speed Pass$3.99
None

石臼2

No in-app purchases

Questions

Is Drilloot free?
Drilloot is free to download, with in-app purchases available.
Is 石臼2 free?
石臼2 is free to download, with no in-app purchases.
Do Drilloot or 石臼2 have ads?
Both Drilloot and 石臼2 show ads.
Which is updated more often, Drilloot or 石臼2?
Drilloot ships an update monthly, and 石臼2 every 2 months. Most recently, Drilloot was updated on October 24, 2026 and 石臼2 on October 16, 2026.

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