Comparison

ZombieDiary vs Alien Invader Escape

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

Head to head
About

ZombieDiary

Embark on a survival mission in a zombie-infested world. Wield a variety of weapons, utilize special skills, and choose from different roles to combat endless hordes of the undead. Gather resources, upgrade your arsenal, and strive to be the last human standing.

Highlights
  • 24 equipable guns
  • 5 playable roles
  • 5 skill upgrades
  • 4 diverse maps
  • 3 powerful mechs
  • Various zombie types
  • Multiple task modes
Features
Read full description

A diary, recording a period of history about a miserable and unimaginable world and a legendary person, has been found by generations of humanity. In 2013 A.D., resident evil breaks out. Zombies dominate our planet which is becoming bleedy hell. As the only survival citizen, you must kill all the zombies in the world who are trying to attack you. Human's mission lies on your shoulder. Now you can pick up weapons to fight for human's density, kill the endless zombies.Remember that your primary mission is to survive. Come on! Let's begin the journey to save the world! In order to kill as many zombies as possible, you must make full use of your resources and earn more coins and crystals. You can buy better weapons and other auxiliary equipments to make yourself more powerful. ========Highlighted Features======== - 24 guns you can equip and use; - 5 roles with different properties you can play; - 5 skills to improve your ability; - 4 maps in the game; - 3 meches can make you the king of the world; - Various types of zombies, quick, strong, remote attack and powerful boss; - Different task modes; - You can earn money in training room which appears after five days; - You can get extra bonus base on your blood percent when level cleared; - Various achivements you can reach and obtain the corresponding rewards.

About

Alien Invader Escape

Features
Read full description

A fun and exciting 8bit retro game that can exercise your mind and judgment and improve your agility thinking. The gameplay is very simple, use the joystick on the screen to control the alien action and avoid the bullets that are constantly attacking. There are 10 sets of the highest scores of local save, you can also submit your highest score to view your world rankings.

Screenshots

ZombieDiary4 screens
Alien Invader Escape3 screens

Verdict

The call

The clearest difference is in-app purchases: Alien Invader Escape at none against ZombieDiary's 10. ZombieDiary's advantage is ads (none vs shown) and update cadence (every 9 days vs every 18 months). On price 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. ZombieDiary sells 10 one-off in-app purchases. Alien Invader Escape asks for nothing beyond the download.

UpkeepUpdate frequency

ZombieDiary ships an update every 9 days, Alien Invader Escape every 18 months. The most recent releases landed on October 13, 2026 and October 12, 2026 respectively.

Scorecard4 real differences · 6 level
ZombieDiary versus Alien Invader Escape: the parameters behind the verdict, then further details
ParameterZombieDiaryAlien Invader Escape
PriceFreeFree
Rating4.3 (89 ratings) — better—
Positive reviews71.0% of reviews—
Number of ratings89 — better—
Update frequencyEvery 9 days — betterEvery 18 months
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS4.3 — better15.6
Further details — not scored
Size19 MB14 MB
Age rating17+4+
DeveloperEzjoyTang Cho man

Bugs and requests

ZombieDiary

Reported bugs

9 issues
  • Training zone zombies unkillable
  • Shield zombies unkillable
  • Game crashes frequently
  • Game not loading/suddenly disappearing
  • Game is zoomed in on iPad
Show 4 more
  • Daily tasks not visible/screen enlarged
  • Crash when killing 2 bombers at once
  • Game stops frequently on iPhone 5
  • Training broken, no damage to zombies

Requested features

20 requests
  • Update the game for modern OS
  • Bring the game back
  • Update for iOS devices
  • Add multiplayer
  • Add boss battles
Show 15 more
  • Add daily challenges/missions
  • Make money easier to earn
  • Add a Christmas update
  • Fix the app icon
  • Make it easier to get crystals
  • Add more ways to get crystals
  • Add bosses
  • Fix the training zone unkillable zombies
  • Fix the zoomed-in screen on iPad
  • Make prices consistent across devices
  • Add more updates
  • Improve rewards for achievements
  • Fix the shield zombie unkillable issue
  • Update the game more often
  • Add new updates for the first and second games

Alien Invader Escape

Not enough reviews yet to summarise bugs or requests.

In-app purchases

10 purchases

ZombieDiary

One-time10
  • 15,000 coins & 15 crystals$0.99
  • 20,000 Coins$1.99
  • 30 crystals$2.99
Show 7 more
  • 60,000 coins$4.99
  • 60,000 coins & 50 crystals$4.99
  • 100 Crystals$7.99
  • 150,000 coins$9.99
  • 120,000 coins & 125 crystals$9.99
  • 300 crystals$19.99
  • 300,000 coins & 300 crystals$19.99
None

Alien Invader Escape

No in-app purchases

Questions

Is ZombieDiary free?
ZombieDiary is free to download, with in-app purchases available.
Is Alien Invader Escape free?
Alien Invader Escape is free to download, with no in-app purchases.
Do ZombieDiary or Alien Invader Escape have ads?
Alien Invader Escape shows ads; ZombieDiary does not.
Which is updated more often, ZombieDiary or Alien Invader Escape?
ZombieDiary ships an update every 9 days, and Alien Invader Escape every 18 months. Most recently, ZombieDiary was updated on October 13, 2026 and Alien Invader Escape on October 12, 2026.

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