Comparison

ThunderForce vs Sky Guardian

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

Head to head
About

ThunderForce

Features
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《ThunderForce》是一款節奏明快的機器人動作射擊遊戲。操控你的雷霆機器人深入戰場,靈活閃避敵人的猛烈攻勢,運用主武器、特殊武器與強力雷電技能突破包圍! 在戰鬥中擊敗敵人、收集寶物並強化能力,挑戰逐步升高的關卡難度。面對各具特色的敵軍與強大頭目,掌握攻擊時機與移動技巧,享受刺激的機器人大戰。 【遊戲特色】 爽快直覺的操作體驗:流暢的移動與射擊控制,快速上手享受戰鬥快感。 豐富的機器人陣容:多款能力獨特的機器人隨心選擇,打造你的專屬戰術。 雙武器與技能系統:靈活搭配主武器與特殊武器,觸發連鎖雷電與華麗爆炸效果。 多元關卡與 Boss 戰:面對不同攻擊模式的敵軍,挑戰強大頭目考驗極限反應。 能力養成與裝備收集:戰鬥中收集寶物、升級能力,突破更高難度的挑戰。 立即下載《ThunderForce》,啟動雷霆之力,成為戰場上最強的機器人! Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Sky Guardian

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Sky Guardian is an offline bullet hell space shooter. Drag to move, dodge enemy fire and keep shooting as you push through the ASHFALL campaign. Learn each boss pattern, earn upgrades and try a different ship for your next run. It is free to play, supported by ads, with no in-app purchases. Fly the ASHFALL campaign across 100 chapters as an Aether storm swallows one system after another. Worlds bend the rules with hazards such as icing, poison fog, wind and gusts, meteor strikes, black-hole pull, time distortion, and more — so survival is about dodging as much as shooting. A world map, story dialogue, and a named boss battle at the end of every single chapter carry you from the first wave to the final storm. Upgrade your ships between runs and take down 100 bosses across the campaign. FEATURES - 100-chapter story campaign on a chapter-select map, across escalating acts of danger - 100 named bosses — one per chapter, with title cards, weak points and battle music, drawing on 15 attack patterns; crack the cores, don't chew a bullet sponge - 16 flyable ships, each a true sidegrade with its own feel and signature weapon — armored patrol, glass-cannon interceptor, rapid-fire gunship, juggernaut - 25 distinct worlds with unique visual identities, music moods and changing battlefield conditions - Deep hangar: 8 permanent upgrade tracks, 12 modular ship parts, and a SPECIAL MODULE slot with own-and-equip modules and run boosts - STORM CORES and the SINGULARITY climax — late bosses pull the arena apart before they die - 8 modes: Campaign, Sky Runner, Endless, Survival, Boss Rush, Time Attack, Chaos, and ASCENSION — each with its own records - ASCENSION roguelite mode — draft power-up cards, bank a single life, and push a permadeath run as far as your build takes you - End-of-chapter card drafts and weapon combinations for run-specific builds - 41 tiered achievements, a companion drone, escort missions, daily objectives with streak bonuses, a weekly challenge, and a pilot level system - 28 engine-trail colours, from the standard wake to gold and mastery unlocks - COMMUNITY LEVELS — paste a compatible shared code to play a custom stage. No account required. - Dynamic, biome-reactive music that shifts mood per world, with adaptive low-HP tension BUILT RIGHT - Full touch controls (drag to move, on-screen pause and bomb) plus keyboard support - The campaign plays offline — no internet connection needed to fly (ads need a connection to load) - Free to play, supported by ads: full-screen ads appear between runs, an ad may appear when you open the game, and optional rewarded ads let you revive or double your coins. No in-app purchases, no account system - Your save is stored locally; no account or sign-in is required. Advertising privacy choices are available in the game settings when applicable. The game does not request contacts or location access. If you grew up on classic arcade shmups and vertical scrolling shooters, this space shooter is built for you: readable bullets, honest hitboxes, boss battles that reward pattern-reading, and a difficulty curve that respects your time. No wifi, no paywall — just you, your spaceship, and the storm. Break the storm, crack the cores, and reclaim the sky.

Screenshots

ThunderForce3 screens
Sky Guardian4 screens

Verdict

The call

The clearest difference is in-app purchases: Sky Guardian at none against ThunderForce's 1. ThunderForce's advantage is ads (none vs shown). On price, update cadence, 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. ThunderForce sells 1 in-app purchase, starting at $0.99 per month. Sky Guardian asks for nothing beyond the download.

UpkeepUpdate frequency

ThunderForce ships an update every 5 days, Sky Guardian every 3 days. The most recent releases landed on October 5, 2026 and October 10, 2026 respectively.

Scorecard2 real differences · 4 level
ThunderForce versus Sky Guardian: the parameters behind the verdict, then further details
ParameterThunderForceSky Guardian
PriceFreeFree
Update frequencyEvery 5 daysEvery 3 days — better
AdsNo — betterYes
In-app purchasesYesNo — better
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.015.0
Further details — not scored
Size74 MB52 MB
Age rating4+12+
DeveloperSun HuangEMRE OZEL

In-app purchases

1 purchases

ThunderForce

Subscriptions1
  • ThunderForce Subscription$0.991 Month
None

Sky Guardian

No in-app purchases

Questions

Is ThunderForce free?
ThunderForce is free to download, with in-app purchases available.
Is Sky Guardian free?
Sky Guardian is free to download, with no in-app purchases.
Do ThunderForce or Sky Guardian have ads?
Sky Guardian shows ads; ThunderForce does not.
Which is updated more often, ThunderForce or Sky Guardian?
ThunderForce ships an update every 5 days, and Sky Guardian every 3 days. Most recently, ThunderForce was updated on October 5, 2026 and Sky Guardian on October 10, 2026.

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