Comparison

Invader Sisters vs Invaders Retro

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

Head to head

Save the planet !

About

Invader Sisters

Features

Read full description

Aim the high score to defeat the enemy invaders! Anyone can play easily, it is a shooting game.

About

Invaders Retro

Defend Earth from relentless alien waves in this retro-inspired shooter. Discover hidden scoring mechanics as you battle through increasingly challenging levels to save the planet.

Highlights

Alien invasion gameplay
Wave-based challenges
Hidden scoring system
Retro graphics
Planet defense

Features

Read full description

Climb the ranks and save the planet from the alien invasion. Waves and waves of aliens, when will it end ? Find hidden scoring as you play.

Screenshots

Invader Sisters4 screens

Invaders Retro3 screens

Verdict

The call

The clearest difference is price: Invader Sisters at Free against Invaders Retro's $0.99. Invader Sisters also leads on iOS requirement (12.0 vs 14.2). Invaders Retro's advantage is ads (none vs shown) and device support (4 vs 2). On update cadence 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

Invader Sisters is free to download; Invaders Retro costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Invader Sisters ships an update every 2 weeks, Invaders Retro weekly. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

Scorecard4 real differences · 4 level

Invader Sisters versus Invaders Retro: the parameters behind the verdict, then further details
Parameter	Invader Sisters	Invaders Retro
Price	Free — better	$0.99
Positive reviews	—	100.0% of reviews
Update frequency	Every 2 weeks	Weekly — better
Ads	Yes	No — better
In-app purchases	No	No
Monetization	—	Paid
Devices	iPhone, iPod	iPhone, iPad, iPod, Mac — better
Requires iOS	12.0 — better	14.2
Further details — not scored
Size	19 MB	3 MB
Age rating	4+	4+
Developer	ERX	Justin Ngan

In-app purchases

None

Invader Sisters

No in-app purchases

None

Invaders Retro

No in-app purchases

Questions

Is Invader Sisters free?

Invader Sisters is free to download, with no in-app purchases.

Is Invaders Retro free?

Invaders Retro costs $0.99, with no in-app purchases.

Do Invader Sisters or Invaders Retro have ads?

Invader Sisters shows ads; Invaders Retro does not.

Which is updated more often, Invader Sisters or Invaders Retro?

Invader Sisters ships an update every 2 weeks, and Invaders Retro weekly. Most recently, Invader Sisters was updated on October 26, 2026 and Invaders Retro on October 24, 2026.