Comparison

Rolly Vortex vs Knife vs Balls

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

Head to head
About

Rolly Vortex

Navigate a rolling ball through an ever-changing obstacle course. Test your reflexes and precision to achieve high scores and compete with friends.

Highlights
  • Fast-paced rolling gameplay
  • Obstacle avoidance challenges
  • High score tracking
  • Challenge friends
  • Intuitive controls
Features
Read full description

Roll quickly, be alert, manage your way through the obstacles, score high and challenge friends

About

Knife vs Balls

Engage in an addictive ball-slicing challenge by throwing knives to defeat bosses and collect a variety of blades. Play daily for rewards and compete globally for the highest score.

Highlights
  • Endless challenge mode
  • Over 60 knives to collect
  • More than 30 bosses to defeat
  • Daily rewards
  • Global high score competition
Features
Read full description

Be The Best Knife Thrower! Slice balls, slash bosses and unlock Epic blades in this new addictive game! Game Features: • Endless challenge! • More than 60 knives to collect! • More than 30 bosses to defeat! • Play every day to get free rewards! • Compete against the world to establish the highest score! Subscription Terms The VIP OFFER offers a weekly subscription, you will have a 3-days FREE trial period, after this period you will be charged $4.49. By this subscription will provide you with unique advantages such as: 3 unique knifes (Katana, Laser Saber, Legendary Sword), 400 coins per day and no ads. This is an Auto-renewable subscription. The payment is charged to your account after confirmation. The subscription is renewed unless you turn it off 24 hours before the period ends. Your account will be charged for renewal as well. The prices are established for United States customers. Pricing in other countries may change and actual charges may be converted to your local currency. End of trial and subscription renewal: • The payment is charged to your account after a confirmation of purchase. • The subscription is renewed unless you turn it off 24 hour before the end of the current period. • The account will be charged for renewal within 24 hours before the end of the current period at the cost of the weekly subscription. • The user may manage the subscription and auto-renewal have to be turned off by going to the user’s account settings after purchase in the Store. • No cancellation of the current subscription is allowed during the active subscription period. • Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable Cancelling a trial or a subscription: • If you want to cancel a subscription during its free trial, you have to cancel it through your account in the Store. This must be done at least 24 hours before the end of the free trial period to avoid being charged. For more information, please visit https://support.apple.com/HT207865 for more information If you have any questions, feel free to contact us at contact@ketchappgames.com Privacy Policy and Terms of use : https://legal.ubi.com

Screenshots

Rolly Vortex4 screens
Knife vs Balls4 screens

Verdict

The call

The clearest difference is ads: Knife vs Balls at none against Rolly Vortex's shown. Knife vs Balls also leads on update cadence (every 3 weeks vs every 4 months) and iOS requirement (9.0 vs 14.0). Rolly Vortex's advantage is ratings volume (305K vs 29) and rating (4.6 vs 4.3). On price, in-app purchases, monetization model 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. Rolly Vortex sells 10 one-off in-app purchases and Knife vs Balls sells 10 in-app purchases, starting at $4.49 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Rolly Vortex holds the better App Store score, 4.6 against 4.3. That said, the two scores are not equally well evidenced: Rolly Vortex has 305K ratings behind it against 29, so its average is the more settled of the two.

UpkeepUpdate frequency

Rolly Vortex ships an update every 4 months, Knife vs Balls every 3 weeks. The most recent releases landed on October 21, 2026 and October 11, 2026 respectively.

Scorecard5 real differences · 5 level
Rolly Vortex versus Knife vs Balls: the parameters behind the verdict, then further details
ParameterRolly VortexKnife vs Balls
PriceFreeFree
Rating4.6 (305K ratings) — better4.3 (29 ratings)
Positive reviews—33.3% of reviews
Number of ratings305K — better29
Update frequencyEvery 4 monthsEvery 3 weeks — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.09.0 — better
Further details — not scored
Size203 MB210 MB
Age rating4+12+
DeveloperVoodooKetchapp

Customer experience

Rolly Vortex

All ratings304,744 ratings
Positive89.6%
Neutral5.8%
Negative4.6%

Knife vs Balls

All ratings29 ratings
Positive82.8%
Neutral3.4%
Negative13.8%
Written reviews3 reviews
Positive33.3%
Neutral0.0%
Negative66.7%

Bugs and requests

Rolly Vortex

Reported bugs

3 issues
  • Game freezing and crashing
  • Leaderboard and progress not saving properly
  • Ads playing even after paying to remove them

Requested features

4 requests
  • More challenging levels and modes
  • Ability to turn off vibrations completely
  • Offline play without ads
  • Additional customization options

Knife vs Balls

Not enough reviews yet to summarise bugs or requests.

In-app purchases

10 purchases

Rolly Vortex

One-time10
  • Deer$0.99
  • The Panda$0.99
  • The Elephant$0.99
Show 7 more
  • The Giraffe$0.99
  • The Lion$0.99
  • The Lioness$0.99
  • The Rhino$0.99
  • The Zebra$0.99
  • Remove Ads$2.99
  • Unlock The Zoo Characters$4.99
10 purchases

Knife vs Balls

Subscriptions1
  • Vip Offer3 Days trial$4.497 Days
One-time9
  • Banana$0.99
  • Kunaï$1.99
  • Pinch of Coins$2.99
Show 6 more
  • Sharp Finger$2.99
  • No ads$3.99
  • Magic Wand$3.99
  • Spinny Gun$5.99
  • Mjöllnir$7.99
  • Pixel Sword$13.99

Questions

Is Rolly Vortex free?
Rolly Vortex is free to download, with in-app purchases available.
Is Knife vs Balls free?
Knife vs Balls is free to download, with in-app purchases available.
Which has better reviews, Rolly Vortex or Knife vs Balls?
Rolly Vortex is rated higher. Rolly Vortex averages 4.6 out of 5 from 305K ratings, while Knife vs Balls averages 4.3 from 29 ratings.
Do Rolly Vortex or Knife vs Balls have ads?
Rolly Vortex shows ads; Knife vs Balls does not.
Which is updated more often, Rolly Vortex or Knife vs Balls?
Rolly Vortex ships an update every 4 months, and Knife vs Balls every 3 weeks. Most recently, Rolly Vortex was updated on October 21, 2026 and Knife vs Balls on October 11, 2026.

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