Comparison

Ethos Idle vs UFO

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

Head to head
About

Ethos Idle

Guide humanity's progress from its earliest discoveries to the distant future. Manage your tribe's choices, develop over 200 unique ideas, and explore the world. Advance your civilization, unlock bonuses, and enjoy a single-player, offline experience with optional ads.

Highlights
  • Develop over 200 historic ideas
  • Explore and exploit the world
  • Manage tribe choices
  • Unlock exploration bonuses and synergies
  • Prestige mechanic upgrades
  • Customizable challenge scenarios
  • Offline single-player experience
Features
Read full description

Chart the progess of Humanity through the ages, and guide their every discovery from the moment they kindle the first fire to the far future. Develop over 200 unique ideas across three different flavours of thought. Help your people to conquer or make peace with their enemies, explore and exploit the world, and develop projects to meet their needs. Manage your tribe's choices to squeeze out more strength, or sit back and idle as your clan develop on their own. Advance as far as you can take your people, and then collect bonuses to improve future runs. Select varied challenges that change the way the game plays, and combine these challenges to create your own unique scenarios with big rewards. Features: - Over 200 historic ideas to develop, across 3 flavours of thought - Dozens of exploration bonuses and synergies to unlock and exploit - Permanently power up your civilisation with prestige mechanic upgrades - Combine varied challenge conditions to create your own scenarios with powerful rewards - Optional, out-of-the-way ads won't interrupt your experience - A completely offline, single player experience - All game content is accessible for free

About

UFO

Features
Read full description

UFO Reflex — don’t tap too early. Don’t tap too late. The UFO appears when you least expect it. Your job is simple: tap the millisecond you see it. React too soon and the round is over. Wait too long and it slips away. Every hit is scored in milliseconds so you can chase your personal best, build streaks, and climb the scoreboard. No ads. No interruptions. Just you, the UFO, and your reflexes. Why you’ll keep playing • Pure skill — no grind, no meta. Just reflex and focus. • Retro arcade vibe — chunky pixels, CRT-style atmosphere, playful sound effects you can mute anytime. • Scoreboard — track your top runs and compare your best times. • Streaks — chain clean rounds and push for milestone moments. • One-thumb friendly — portrait, quick sessions, perfect for a spare minute. Whether you’re warming up your reactions or competing against your last score, UFO Reflex is built for short, intense bursts of arcade fun. Download and see how fast you really are.

Screenshots

Ethos Idle4 screens
UFO4 screens

Verdict

The call

The clearest difference is in-app purchases: UFO at none against Ethos Idle's 1. UFO also leads on ads (none vs shown) and update cadence (every 3 days vs every 3 weeks). Ethos Idle's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 17.0). On price 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. Ethos Idle sells 1 one-off in-app purchase. UFO asks for nothing beyond the download.

UpkeepUpdate frequency

Ethos Idle ships an update every 3 weeks, UFO every 3 days. The most recent releases landed on October 25, 2026 and October 14, 2026 respectively.

Scorecard5 real differences · 5 level
Ethos Idle versus UFO: the parameters behind the verdict, then further details
ParameterEthos IdleUFO
PriceFreeFree
Rating4.8 (241 ratings) — better—
Positive reviews84.4% of reviews—
Number of ratings241 — better—
Update frequencyEvery 3 weeksEvery 3 days — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.0 — better17.0
Further details — not scored
Size101 MB3 MB
Age rating4+4+
DeveloperGraham GoldsteinMehmet Fatih Ozulker

Bugs and requests

Ethos Idle

Reported bugs

2 issues
  • RNG for challenges is unfair and unfun
  • Unlocking buffs for inaccessible technologies

Requested features

2 requests
  • Option to remove ads entirely
  • Clarification on prestige warp gain multipliers

UFO

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

Ethos Idle

One-time1
  • x2 Speed$6.99
None

UFO

No in-app purchases

Questions

Is Ethos Idle free?
Ethos Idle is free to download, with in-app purchases available.
Is UFO free?
UFO is free to download, with no in-app purchases.
Do Ethos Idle or UFO have ads?
Ethos Idle shows ads; UFO does not.
Which is updated more often, Ethos Idle or UFO?
Ethos Idle ships an update every 3 weeks, and UFO every 3 days. Most recently, Ethos Idle was updated on October 25, 2026 and UFO on October 14, 2026.

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