Comparison

Idle Space Farmer Manager vs Alien Observer

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

Head to head
About

Idle Space Farmer Manager

Manage a space farm, collect anime-style agents (waifus), and earn idle profit. Upgrade your agents and farm to build a space empire and defeat monsters. Play offline or online to become a tycoon.

Highlights
  • Assign tasks to waifus
  • Upgrade agents for idle income
  • Earn money offline
  • Use unique agent skills
  • Prestige and explore planets
  • Farm different monsters
  • Collect new waifus via gacha
Features
Read full description

Have you ever wondered what it's like to manage a space farm? Protect your farm from monsters and earn idle profit to build your station. Become a space farmer and manage space agents (waifus) in this tycoon game! Collect all waifus and defeat enough monsters to strengthen your space empire! Idle Space Farmer is an anime style tycoon game that mixes farming monsters with waifu management. Gain profit and become a real space tycoon. The aim of this idle game is to recruit the best waifu to defeat as many monsters as possible. With the income you receive, you will have to hire agents, play gacha games and upgrade your farm and spaceships. Become the best space farmer tycoon, build an idle space empire and earn a massive profit. Get ready to recruit your anime agents in this farming space game! FEATURES OF IDLE SPACE FARMER - Get close to your waifu and assign them tasks! - Upgrade your agents to increase your idle income: sit back and become a millionaire without tapping! - Get idle cash and earn money: continue farming in space, even when you are offline! - Lots of rewards await you in our space game! - Cast agents' unique skills to increase your farming motivation! - Prestige feature and different planets: build up your billionaire space empire simulation! - Farm different kinds of monsters: orcs, octopus, mantis and more! - Get a new waifu in the gacha mode! - No Internet connection needed: get rich online or offline in this idle tycoon game! Become rich, explore other worlds, play gacha games, buy spaceship upgrades, invest cash and become the greatest space farm tycoon in this anime style game! Feel free to send a message to isf@anxiousotter.com – We are always happy to receive our players’ feedback! Facebook: https://www.facebook.com/idlespacefarmer/ Instagram: https://www.instagram.com/idlespacefarmer/ Discord: https://discord.gg/KGCAhM3

About

Alien Observer

Features
Read full description

Your Home world is slowly dying. You are a young alien Observer Corps agent on your first deep assignment, sent to study a remarkably promising third planet the locals call Earth. Plot your orbits, scan, learn, and try to stay invisible. WHAT YOU DO Design transfer orbits and time your burns in an original orbital mechanic. Scan biomes, cities and oceans through alien eyes. Solve mini-games to calibrate sensors and stabilize anomalies. Make strategic calls. Manage antimatter, intel and samples. Upgrade your ship. Level up your Observer. Climb the Council ranks. File reports. Honor the Prime Directive: remain unseen. A blend of orbital strategy, RPG progression and resource management, with a healthy dose of dry humor about a bureaucratic alien civilization trying very hard to understand us. SUBSCRIPTION Annual Season Pass is an auto-renewable subscription, 1 year duration. Price is shown on the purchase screen before you confirm, in your local currency. The Season Pass unlocks Advanced Autopilot, two Data Storage licenses, the Chapter 2 expansion, the Generalist class, the Pets Pack with all four companions, and every DLC released during the year. All unlocked content is yours to keep permanently, even after the subscription ends. IN-APP PURCHASES Alien Observer is free to play. Optional one-time purchases include antimatter reactor refills, the Data Storage License, Advanced Autopilot, the Chapter 2 expansion, and animal companions (Laika, Ham, Cow, HAL9000), available individually or as a Pets Pack. These purchases never expire. ADS Optional rewarded video ads can be watched to earn small in-game rewards (a unit of antimatter, a skill point, raw data, or a reduction in Notoriety). Ads are never required to progress. The Annual Season Pass does not remove ads, since ad rewards remain useful regardless of subscription status — but Season Pass benefits make them far less necessary. TERMS AND PRIVACY Terms of Use (EULA): https://alienobserver.app/terms Privacy Policy: https://alienobserver.app/privacy Website: https://alienobserver.app

Screenshots

Idle Space Farmer Manager4 screens
Alien Observer4 screens

Verdict

The call

The clearest difference is iOS requirement: Idle Space Farmer Manager at 13.0 against Alien Observer's 17.6. On price, update cadence, ads and in-app purchases 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. Idle Space Farmer Manager sells 12 one-off in-app purchases and Alien Observer sells 10 in-app purchases, starting at $29.99 per year. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Idle Space Farmer Manager ships an update monthly, Alien Observer every 3 weeks. The most recent releases landed on October 27, 2026 and October 28, 2026 respectively.

Scorecard1 real difference · 9 level
Idle Space Farmer Manager versus Alien Observer: the parameters behind the verdict, then further details
ParameterIdle Space Farmer ManagerAlien Observer
PriceFreeFree
Rating4.8 (2.9K ratings) — better—
Positive reviews66.8% of reviews—
Number of ratings2.9K — better—
Update frequencyMonthlyEvery 3 weeks — better
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better17.6
Further details — not scored
Size319 MB640 MB
Age rating12+12+
DeveloperAnxious Otter Games Ltd.Solebo LTD

Bugs and requests

Idle Space Farmer Manager

Reported bugs

4 issues
  • Game crashes on launch
  • Cloud save not working
  • Prestige reset not functioning
  • Ads causing game to freeze

Requested features

4 requests
  • Add 3D character animations
  • Implement a reset/restart option
  • Improve the ad system
  • Enhance the character gacha system

Alien Observer

Not enough reviews yet to summarise bugs or requests.

In-app purchases

12 purchases

Idle Space Farmer Manager

One-time12
  • Welcome Pack$0.99
  • New Player Bundle$1.99
  • Super Speed Offer$2.99
Show 9 more
  • Investigation Survival Pack$2.99
  • Double Idle Cash$4.99
  • Ameteur Investigator Pack$4.99
  • Double Cash & Idle Cash$6.99
  • Legendary Chest Bundle$6.99
  • Starter Offer$9.99
  • Farm Boosting Offer$14.99
  • Small Chest of Super Cash$19.99
  • Farm Upgrade Offer$19.99
10 purchases

Alien Observer

Subscriptions1
  • Annual Season Pass$29.991 Year
One-time9
  • Full Reactor Refill$1.99
  • Data Storage License$1.99
  • Pet: Laika$3.99
Show 6 more
  • DLC Pet: Ham$3.99
  • Pet: Cow$3.99
  • Pet: HAL9000$3.99
  • Advanced Autopilot$4.99
  • DLC Pets Pack$9.99
  • Chapter 2 License$19.99

Questions

Is Idle Space Farmer Manager free?
Idle Space Farmer Manager is free to download, with in-app purchases available.
Is Alien Observer free?
Alien Observer is free to download, with in-app purchases available.
Do Idle Space Farmer Manager or Alien Observer have ads?
Both Idle Space Farmer Manager and Alien Observer show ads.
Which is updated more often, Idle Space Farmer Manager or Alien Observer?
Idle Space Farmer Manager ships an update monthly, and Alien Observer every 3 weeks. Most recently, Idle Space Farmer Manager was updated on October 27, 2026 and Alien Observer on October 28, 2026.

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