Comparison

Crazy John vs I.F.O!

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

Head to head
About

Crazy John

Embark on a post-apocalyptic journey as a lone survivor fighting mutated zombies in underground tunnels. Upgrade weapons and stats, utilize power-ups, and battle bosses across eerie landscapes in a retro pixel art style.

Highlights
  • Creepy-cool pixel art style
  • Unlimited levels
  • Four eerie landscapes
  • Full weapon upgrade system
  • Full stat upgrade system
  • Awesome power-ups and vehicles
  • Crazy bosses
Features
Read full description

*NOW FREE for a LIMITED TIME!* ZOMBIES roam the EARTH... HUMANITY takes REFUGE UNDERGROUND... ONE MAN makes a STAND... ▶▶▶ [2046] In the aftermath of total global nuclear warfare, humanity abandoned the surface of the earth, and relocated to a network of underground tunnels… Those few that remained above were contaminated by radioactive dust. The results were… horrifying… One man wasn't about to give up on the place he still called home. They called him crazy… Crazy John... ▶▶▶ • creepy-COOL pixel STYLE • UNLIMITED levels • 4 EERIE landscapes • FULL weapon UPGRADE sytem • FULL stat UPGRADE system • AWESOME power-ups and VEHICLES • FANTASTIC sound-track • CRAZY BOSSES! ▶▶▶ http://twitter.com/TRINITIgames http://facebook.com/TRINITIgames

About

I.F.O!

Read full description

※ This app is the free version of the paid app I.F.O and contains ads. The paid version offers an ad-free experience and higher resolution, allowing you to enjoy the world of I.F.O more clearly. A fierce battle against UFO squadrons across the LCD sky! The fate of the Earth rests on your old, beat-up monoplane! A space odyssey without space, brought to you by Total Battery! ● Simple yet deep controls Press the left or right button to rotate your aircraft. Press both buttons at once to fly at high speed! Just two controls deliver intense aerial combat. ● A junk plane that grows stronger Capture aliens escaping from destroyed UFOs(?) and mysterious alien power will upgrade your weapons. ● Unique weapons and items Rescue cows and sheep abducted by aliens to change your weapon! Depending on the livestock you save, you can recover life or obtain heart pieces that increase your maximum life. – v1.1 Update – ● Weapon Mode Challenge high scores using only your favorite weapon! With this weapon, I am the best. Programming & Artwork : Total Battery (Gon Lee) Stage BGM : Skipmore Title BGM : OTOnoniwa

Screenshots

Crazy John4 screens
I.F.O!4 screens

Verdict

The call

The clearest difference is in-app purchases: I.F.O! at none against Crazy John's 1. Crazy John's advantage is ads (none vs shown) and iOS requirement (3.0 vs 13.0). On price, update cadence and device support 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 John sells 1 one-off in-app purchase. I.F.O! asks for nothing beyond the download.

UpkeepUpdate frequency

Crazy John ships an update every 4 weeks, I.F.O! every 6 weeks. The most recent releases landed on November 1, 2026 and October 27, 2026 respectively.

Scorecard3 real differences · 7 level
Crazy John versus I.F.O!: the parameters behind the verdict, then further details
ParameterCrazy JohnI.F.O!
PriceFreeFree
Rating3.8 (127 ratings) — better—
Positive reviews65.9% of reviews—
Number of ratings127 — better—
Update frequencyEvery 4 weeks — betterEvery 6 weeks
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS3.0 — better13.0
Further details — not scored
Size27 MB103 MB
Age rating17+4+
DeveloperTriniti Interactive Limitedgon lee

Bugs and requests

Crazy John

Reported bugs

3 issues
  • Incorrect coin/money rewards
  • Crashes and freezes on certain devices
  • Unresponsive controls at times

Requested features

5 requests
  • More enemy types and boss battles
  • Multiplayer and co-op modes
  • Expanded level and mission variety
  • Character customization options
  • Difficulty settings

I.F.O!

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

Crazy John

One-time1
  • Crazy John $450K Pack$0.99
None

I.F.O!

No in-app purchases

Questions

Is Crazy John free?
Crazy John is free to download, with in-app purchases available.
Is I.F.O! free?
I.F.O! is free to download, with no in-app purchases.
Do Crazy John or I.F.O! have ads?
I.F.O! shows ads; Crazy John does not.
Which is updated more often, Crazy John or I.F.O!?
Crazy John ships an update every 4 weeks, and I.F.O! every 6 weeks. Most recently, Crazy John was updated on November 1, 2026 and I.F.O! on October 27, 2026.

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