Comparison

Crazy TD vs Idle Rune Foundry

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

Head to head
About

Crazy TD

Defend your tower from an invading red army by tapping to shoot. Avoid friendly fire with the blue army and earn points by eliminating enemies and birds. Compete on leaderboards and unlock achievements in this fast-paced defense game.

Highlights
  • Tap to shoot enemies
  • Swipe for machine gun action
  • Defend against red army
  • Avoid shooting blue army
  • Earn points for kills
  • Game Center Leaderboard
  • Game Center Achievements
Read full description

Fight off swarm of red army from taking over your tower. Blue army will be sent from time to time to defend your tower from taking over by the red army. Shoot the red army as fast as possible and avoid shooting the blue army. How to play: • TAP to shoot the red army as fast as you can. • SWIPE the screen to shoot the army with machine gun. • A point will be awarded when a red army or bird is shot. • Shooting the parachute will not earn you any point. Additional Features: • Game Center Leaderboard. • Game Center Achievements. ••• Health and Safety ••• Take a break if your fingers get tired or feeling sore.

About

Idle Rune Foundry

Forge mystical runes by tapping and building an army of automated workers. Upgrade your forge, enchant items, and prestige for permanent power. Earn resources even while offline.

Highlights
  • Tap-to-forge gameplay with critical strikes
  • Automated rune production with various worker types
  • Deep upgrade and enchanting systems
  • Prestige system for permanent progression
  • Offline earnings and progression
  • Customizable forge skins
  • Offline play supported
Read full description

Become the ultimate Runesmith! Tap to forge mystical runes, build an army of enchanted auto-forgers, and grow your forge into a legendary powerhouse. FORGE YOUR DESTINY Start with nothing but a hammer and an anvil. Every tap crafts a rune, and every rune brings you closer to mastery. Upgrade your tap power, land critical strikes, and build explosive combos to supercharge your output. BUILD YOUR WORKFORCE Hire Apprentices, enchant Rune Chisels, fuel Mana Bellows, and command mighty Golem Workers. As your forge grows, unlock powerful machines like the Arcane Lathe, Elder Runesmith, Phoenix Furnace, and the mysterious Void Conduit — each producing runes automatically, even while you're away. ENCHANT & UPGRADE Convert your runes into powerful Enchanted Runes to unlock premium upgrades. Boost your tap power, increase production multipliers, and automate your enchanting process for maximum efficiency. PRESTIGE FOR POWER When you've pushed your forge to its limits, perform a Prestige reset to earn Ancient Essence — a permanent currency that makes every new run faster and more powerful. Unlock Ancient Upgrades that persist forever, giving you an edge that compounds with every prestige. EARN WHILE YOU'RE AWAY Your forge never sleeps! Come back to collect runes earned by your workers while you were gone. Upgrade your offline earnings to collect even more. CUSTOMIZE YOUR FORGE Express your style with unique forge skins — from the Classic Forge to the ethereal Celestial Forge. Collect them all and make your forge truly yours. KEY FEATURES - Satisfying tap-to-forge gameplay with critical strikes and combos - 8 unique auto-forger types to unlock and upgrade - Deep upgrade system across Tap, Forge, and Enchanting categories - Prestige system with permanent progression - Offline earnings that keep your forge running 24/7 - Beautiful forge cosmetic skins - Speed boosts and auto-tap for accelerated gameplay - Dark, atmospheric fantasy aesthetic - No internet required to play ACCESSIBILITY - VoiceOver support across every game screen - Dynamic Type — game text scales with your iOS text size preference - Reduce Motion honored — sparks, glows, and ceremonial animations calm down when enabled - Sound, haptic, and Reduce Motion toggles in Settings - Color-blind friendly — affordability, selection, and castle piece state are shown by icon and shape, never by color alone - 44pt minimum touch targets on every button and tab Download Idle Rune Foundry and start your journey from humble apprentice to legendary Runesmith!

Screenshots

Crazy TD3 screens
Idle Rune Foundry4 screens

Verdict

The call

The clearest difference is rating: Idle Rune Foundry at 5.0 against Crazy TD's 4.0. Idle Rune Foundry also leads on update cadence (every 2 weeks vs every 3 months) and monetization model (free vs free with in-app purchases). Crazy TD's advantage is device support. On price, ratings volume, in-app purchases 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. Crazy TD sells 1 one-off in-app purchase and Idle Rune Foundry sells 5 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Idle Rune Foundry holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

UpkeepUpdate frequency

Crazy TD ships an update every 3 months, Idle Rune Foundry every 2 weeks. The most recent releases landed on October 29, 2026 and October 25, 2026 respectively.

Scorecard4 real differences · 6 level
Crazy TD versus Idle Rune Foundry: the parameters behind the verdict, then further details
ParameterCrazy TDIdle Rune Foundry
PriceFreeFree
Rating4.0 (2 ratings)5.0 (1 ratings) — better
Positive reviews66.7% of reviews—
Number of ratings2 — better1
Update frequencyEvery 3 monthsEvery 2 weeks — better
AdsYes—
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad — better—
Requires iOS17.517.0 — better
Further details — not scored
Size6 MB69 MB
Age rating12+4+
DeveloperAng Chee HongMichael Eakins

In-app purchases

1 purchases

Crazy TD

One-time1
  • Remove In-Game Ads$0.99
5 purchases

Idle Rune Foundry

One-time5
  • Pouch of Gems$0.99
  • Remove Ads$2.99
  • Chest of Gems$3.99
Show 2 more
  • Legendary Hoard$6.99
  • Vault of Gems$14.99

Questions

Is Crazy TD free?
Crazy TD is free to download, with in-app purchases available.
Is Idle Rune Foundry free?
Idle Rune Foundry is free to download, with in-app purchases available.
Which has better reviews, Crazy TD or Idle Rune Foundry?
Idle Rune Foundry is rated higher. Crazy TD averages 4.0 out of 5 from 2 ratings, while Idle Rune Foundry averages 5.0 from 1 ratings.
Which is updated more often, Crazy TD or Idle Rune Foundry?
Crazy TD ships an update every 3 months, and Idle Rune Foundry every 2 weeks. Most recently, Crazy TD was updated on October 29, 2026 and Idle Rune Foundry on October 25, 2026.

Other comparisons