Best 51 Idle Apps & Games

247+ iOS apps & games curated and reviewed

4.6 avg rating
20 free apps & games
Updated September 2026

The best 51 idle apps and games on iPhone average 4.6★ across 247+ titles — we've ranked them by what real users actually keep on their phones. Updated September 2026.

Compare top 51 Idle Apps & Games (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Idle Area 51Idle Area 51Free4.8★ (10K)YesYesSep 2026
2Idle Anomaly: Alien ControlIdle Anomaly: Alien ControlFree4.7★ (364)YesYesSep 2026
3Builderment IdleBuilderment IdleFree3.2★ (21)YesYesSep 2026
4Idle HighwayIdle HighwayFree4.5★ (927)YesNoSep 2026
5Idle SuccessIdle SuccessFree4.8★ (21K)YesYesSep 2026
6Idle Train Empire - Idle GamesIdle Train Empire - Idle GamesFree4.6★ (1.1K)YesYesSep 2026
7Fallen Souls: Idle RPGFallen Souls: Idle RPGFree4.8★ (52)NoYesSep 2026
8IdleMMO - Online Idle RPGIdleMMO - Online Idle RPGFree4.8★ (699)NoYesSep 2026

Top Picks for 51 Idle

Idle Area 51#1

Idle Area 51 by PlaySide

Alien Idle Game!
Editor's Choice
🎮 Games
4.8😐(10K ratings)
FreeAdsIn-App Purchases
Idle Area 51 screenshot 1
Idle Area 51 screenshot 2
Idle Area 51 screenshot 3
Idle Area 51 screenshot 4
Idle Area 51 screenshot 5
Idle Area 51 screenshot 6

Build and manage a secret desert facility to research salvaged alien technology. Expand your operations, unlock advanced research, and defend against government raids and alien interference. Your strategic decisions will determine the fate of your facility and potentially the world.

What We Love

  • 🚀 Addictive gameplay
  • 👍 Unique space theme
  • 🤩 Impressive graphics

Room to Improve

  • 🐛 Frequent crashes and bugs
  • 💰 Expensive in-app purchases
  • 🔋 Drains battery quickly
  • 🕰️ Slow progression without ads
Idle Anomaly: Alien Control#2

Idle Anomaly: Alien Control by Hot Siberians

Build Your Own Empire!
Strong Contender
🎮 Games
4.7😐(364 ratings)
FreeAdsIn-App Purchases
Idle Anomaly: Alien Control screenshot 1
Idle Anomaly: Alien Control screenshot 2
Idle Anomaly: Alien Control screenshot 3
Idle Anomaly: Alien Control screenshot 4
Idle Anomaly: Alien Control screenshot 5

Build a research station to uncover the secrets of a mysterious alien Obelisk. Manage employees, defend your base from alien invaders, and upgrade heroes. Progress continues even when you're offline.

What We Love

  • 👍 Good game overall
  • 🎨 Great design scheme
  • ✨ Items change looks
  • 🧘 Calming gameplay
  • 💡 Interesting and fun gameplay
  • 🌟 Nice graphics
  • 🚀 Well thought out game
  • 💯 10 out of 10 game

Room to Improve

  • 📉 New update makes it dip
  • 💸 Hero upgrades too expensive
  • 🐛 Ads still present after purchase
  • 💸 In-game purchases not received
  • ⏳ Purchases don't take effect
  • 😵 Irritating game issues
  • 🚫 Ads appear after paying to remove them
  • 🥶 Game keeps locking up
  • 🔄 Game freezes and spins
  • 📉 Progression can be slow
  • 📱 Phone heats up significantly
  • 😩 Constant ad interruptions
  • 💰 Crazy expensive no ads price
  • 📉 Upgrading items becomes hard
  • ⚠️ Game stops working/won't load
  • 📉 Unwanted blackouts
Builderment Idle#3

Builderment Idle by Builderment LLC

a casual factory simulator
Worth Considering
🎮 Games
3.2(21 ratings)
FreeAdsIn-App Purchases
Builderment Idle screenshot 1
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Builderment Idle screenshot 4

Build and manage automated factories in this idle incremental game. Harvest resources, craft items, and upgrade your production lines to become a factory tycoon. Your factories continue to work even when you're offline, allowing you to collect profits and expand your empire.

More 51 Idle apps to explore

FAQ about 51 Idle

What are the best 51 idle apps & games for iPhone?
Idle Area 51 tops our 51 idle apps & games ranking as of September 2026, with a 4.8-star average from 10K App Store ratings, and it's free to download.
Yes — 20 of the top 51 idle apps & games we rank are free to download, including Idle Area 51 and Idle Anomaly: Alien Control.
Idle Area 51 shows ads and offers in-app purchases, according to its App Store listing as of September 2026.
We track 247+ 51 idle apps & games on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.
Idle Area 51 is an idle simulation game where you manage a secret desert facility. Your goal is to salvage alien technology from crashed UFOs, research it, and expand your operations. You'll need to strategize to increase revenue, reduce costs, and defend your facility from various threats.
Key features include salvaging alien tech, building and upgrading your facility, researching alien biology and advanced technologies, managing workers and resources, and defending against government raids and alien interference. You can also unlock special upgrades from mysterious sources.