Comparison

rRootage Online HD vs Simoo

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

Head to head
About

rRootage Online HD

Experience a legendary shooter ported and optimized for mobile devices. Engage in 160 stages across four distinct modes, featuring online leaderboards and achievements. Master unique gameplay mechanics in this classic arcade-style experience.

Highlights
  • Four distinct game modes
  • 160 challenging stages
  • Online hi-scores and achievements
  • Game Center integration
  • Intuitive touch controls
  • Multiple gameplay mechanics (Normal, PSY, IKA, GW)
Features
Read full description

Kenta Cho's legendary shooter rRootage ported and optimized for iOS! 4 different modes, 160 stages total. Including music, SFX, online hi-scores and achievements. rRootage Online is Game Center enabled. ◆ Reviews for rRootage Online ◆ EUROGAMER (Rating 9/10): "rRootage Online is why Kenta Cho releases his games in the way he does; it's now got a chance to hit a new audience, and be enjoyed by many more people, in what feels like the definitive version." APP SPY (Rating 4/5): "...for those who consider themselves fans of the shmup genre, this is without a doubt a must buy." TOUCHARCADE: "Anyone who enjoys a nice 2D shooter should grab this one instantly." WHATSONIPHONE (Rating 4.5/5): "rRootage is a classic game faithfully rendered on the iphone" FINGERGAMING: "rRootage offers much more variety than the typical App Store shoot-’em-up [...]. Shooter fans should definitely check this one out." POCKETGAMER: "The fact that this gem is available on the App Store is great news." THEPORTABLEGAMER: "If R-Type was too simple for you, or DoDonPachi Resurrection was something you completed with one eye closed while doing one handed pushups, then this is worthy of your time and money." Controls: * Touch and hold to move ship * Second touch to trigger special * Double tap to pause game Menu: * Touch the squares to select mode/stage Game: Control your ship and avoid the barrage. Use the laser to destroy the battleship of the enemy. You can cause more damage if you fire the laser close to the enemy. When all ships are destroyed, the game is over. The ship extends at 200,000 and every 500,000 points. . Normal Mode This is the standard game mode. - Special -> Bomb The bomb wipes enemies bullets. The number of bombs are displayed at the left-down corner. . PSY Mode As your ship grazes a bullet, the graze meter (displayed at the right-down corner) increases. When the graze meter becomes full, the ship becomes invincible for a while. - Special -> Rolling This movement widens the range the ship can graze. . IKA Mode Your ship has two attributes, white and black. All bullets also have these attributes, and your ship can absorb bullets that have the same attribute. Absorbed bullets are changed into lasers automatically. - Special -> Attribution change Change your ship’s attribute. . GW Mode Your ship can use the reflector. The reflector reflects bullets around your ship. - Special -> Reflector To use the reflector, you have to activate special until the reflector meter (displayed at the left-down corner) becomes empty. You can use the reflector only if the reflector meter displays 'OK'.

About

Simoo

A memory game where players repeat a sequence of mooing cows. Test your recall by tapping the cows in the correct order after they moo. Enjoy a cute and simple challenge.

Highlights
  • Simon Says style gameplay
  • Memory sequence challenge
  • Cute cow characters
  • Simple tap controls
  • Increasing difficulty
Features
Read full description

Simoo is a simple Simon says style game with cows! Simply listen and watch as the herd moo in sequence, then tap the sequence back by touching the cows in the right order. How many can you remember? "I love this game! The cows are really cute! (5 stars)" - RSI Good luck and have fun!

Screenshots

rRootage Online HD4 screens
Simoo4 screens

Verdict

The call

The clearest difference is price: rRootage Online HD at Free against Simoo's $0.99. rRootage Online HD also leads on rating (4.7 vs 3.1). Simoo's advantage is review sentiment (88% vs 78%) and iOS requirement (12.0 vs 15.6). On ratings volume, 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

rRootage Online HD is free to download; Simoo costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

rRootage Online HD holds the better App Store score, 4.7 against 3.1. Both are backed by a comparable volume of ratings — 33 and 17 respectively. Written reviews complicate that: 78% of rRootage Online HD's written reviews are positive against 88% of Simoo's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 4 months. The most recent releases landed on August 24, 2026 and August 15, 2026 respectively.

Scorecard5 real differences · 5 level
rRootage Online HD versus Simoo: the parameters behind the verdict, then further details
ParameterrRootage Online HDSimoo
PriceFree — better$0.99
Rating4.7 (33 ratings) — better3.1 (17 ratings)
Positive reviews78.3% of reviews87.5% of reviews — better
Number of ratings33 — better17
Update frequencyEvery 4 monthsEvery 4 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.612.0 — better
Further details — not scored
Size15 MB15 MB
Age rating4+4+
Developerfraglab.atCode Redman Ltd

Customer experience

rRootage Online HD

All ratings33 ratings
Positive90.9%
Neutral3.0%
Negative6.1%
Written reviews23 reviews
Positive78.3%
Neutral13.0%
Negative8.7%

Simoo

All ratings17 ratings
Positive52.9%
Neutral0.0%
Negative47.1%
Written reviews32 reviews
Positive87.5%
Neutral9.4%
Negative3.1%

In-app purchases

None

rRootage Online HD

No in-app purchases

None

Simoo

No in-app purchases

Questions

Is rRootage Online HD free?
rRootage Online HD is free to download, with no in-app purchases.
Is Simoo free?
Simoo costs $0.99, with no in-app purchases.
Which has better reviews, rRootage Online HD or Simoo?
rRootage Online HD is rated higher. rRootage Online HD averages 4.7 out of 5 from 33 ratings, while Simoo averages 3.1 from 17 ratings.
Do rRootage Online HD or Simoo have ads?
Neither rRootage Online HD nor Simoo shows ads.
Which is updated more often, rRootage Online HD or Simoo?
rRootage Online HD ships an update every 4 months, and Simoo every 4 months. Most recently, rRootage Online HD was updated on August 24, 2026 and Simoo on August 15, 2026.

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