Comparison

Flexible Ostrich vs Sum2Rush

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

Head to head
About

Flexible Ostrich

Features
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Flexible Ostrich - an exciting game of reaction speed and accuracy. Necks of different lengths will randomly drop from the top of the screen, and each neck corresponds to a different score. Your task is to control a character and catch as many necks as possible before the game ends to get a higher score and earn coins. You simply touch, swipe or tap the screen to control your character's movement and catch the falling neck. By catching the neck and getting high scores, you will earn coins. These gold coins can be used to purchase various themes and skins to make your gaming experience more personalized and fun!

About

Sum2Rush

Features
Read full description

Sum2Rush is a fast, cozy math arcade. Tap the floating green balls to add their values together and hit the target exactly. Go over and you overflow. Go negative and you lose. Hit the sweet spot and you get perfect. FEATURES - 60+ rounds with steadily rising targets - 25+ special ball types that change how you play: gold for exact hits, explosive, ghost, chain, bomb, nova, rainbow, comet, and more - 33 achievements across milestone, perfection, combat, daily, and collection categories - Daily streak with calendar-day reset, missions for bonus gems, upgrade shop for permanent boosts - 11 ball skins to unlock: cats, bunnies, foxes, angels, unicorns, fairies, wolves, and more - Combo system rewards fast perfect taps with score multipliers - Free, works offline, no account required HOW TO PLAY Numbers float down the screen. Each green ball shows a value. Tap them to add to your current sum. Your goal is to reach the target exactly. Some balls shrink in value over time, so speed matters. Red balls subtract. As you climb rounds, new ball types appear one at a time, each with a short tutorial. Learn to chain bombs, ride comets, trigger black holes, and freeze the screen when things get wild. Get your first perfect round today.

Screenshots

Flexible Ostrich4 screens
Sum2Rush3 screens

Verdict

The call

The clearest difference is iOS requirement: Flexible Ostrich at 12.0 against Sum2Rush's 17.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Flexible Ostrich ships an update every 3 days, Sum2Rush every 4 days. Both last shipped on October 25, 2026.

Scorecard1 real difference ยท 5 level
Flexible Ostrich versus Sum2Rush: the parameters behind the verdict, then further details
ParameterFlexible OstrichSum2Rush
PriceFreeFree
Update frequencyEvery 3 days โ€” betterEvery 4 days
AdsYesYes
In-app purchasesNoNo
DevicesiPhone, iPodiPhone, iPad
Requires iOS12.0 โ€” better17.0
Further details โ€” not scored
Size97 MB23 MB
Age rating17+4+
Developerๆ• ่ƒกBartosz Paprzycki

In-app purchases

None

Flexible Ostrich

No in-app purchases

None

Sum2Rush

No in-app purchases

Questions

Is Flexible Ostrich free?
Flexible Ostrich is free to download, with no in-app purchases.
Is Sum2Rush free?
Sum2Rush is free to download, with no in-app purchases.
Do Flexible Ostrich or Sum2Rush have ads?
Both Flexible Ostrich and Sum2Rush show ads.
Which is updated more often, Flexible Ostrich or Sum2Rush?
Flexible Ostrich ships an update every 3 days, and Sum2Rush every 4 days. Most recently, Flexible Ostrich was updated on October 25, 2026 and Sum2Rush on October 25, 2026.

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