Comparison

One By One vs Roll

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

Head to head
About

One By One

Practice arithmetic, algebra, trigonometry, and calculus with a retro-style math game. Level up by solving problems, unlock new challenges, and compete on leaderboards. Enhance your skills with artifacts and strategic upgrades.

Highlights
  • Randomly generated math problems
  • Leveling system with unlockable content
  • Practice arithmetic, algebra, trigonometry, and calculus
  • Retro ASCII art and music style
  • Leaderboards and achievements
  • Math artifacts and upgrades
  • AI battle mode for targeted practice
Features
Read full description

One By One is a retro math study game built for middle and high school students looking to level up their mental math skills. Featuring randomly generated problems, the app lets you switch from basic arithmetic to advanced calculus. You can also target specific practice areas using the One By One Battles mode or the premium Sandbox mode. Key Features Retro Calculator Aesthetic: Enjoy a nostalgic UI designed with classic Unicode and ASCII art, complete with satisfying mechanical key clicks and atmospheric background music. Four Math Disciplines: Practice everything from basic arithmetic and high school algebra to trigonometric functions (complete with a built-in unit circle) and calculus derivatives. Leveling System: Progress all the way from Level 1 to 99, unlocking brand-new question tiers every ten levels. AI Battles & Training: Test your speed in targeted training modes or race against AI opponents to earn in-game rewards. Artifacts & Upgrades: Solve rare "Golden Problems" to collect 25 unique math artifacts featuring 9 distinct upgrades to shape your strategy. Leaderboards & Achievements: Compete across 5 specialized leaderboards, including a balance-based leaderboard, and uncover hidden achievements. Download One By One and start solving math faster than your teacher! Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Roll

Engage in a relaxing dice-rolling experience where you aim to collect points by rolling dice and strategically upgrading them. This game blends elements of strategy, clicker, and roguelike deckbuilders for a unique dice-building system with deep strategic choices. Enjoy a meditative escape with its minimalistic design and peaceful atmosphere.

Highlights
  • Dice rolling for points
  • Dice upgrading system
  • Strategy and critical thinking
  • Relaxing and meditative experience
  • Unique dicebuilding synergies
  • Highscore chasing
Features
Read full description

In Roll, you have 2500 rolls to collect as many points as possible. Roll your dice to gain points, spend your points to upgrade your dice, and repeat. Borrowing gameplay elements from strategy, clicker, and roguelike deckbuilder genres, Roll creates a perfect balance of relaxation with critical thinking. While the "Clicker"/"Incremental" genre is not known for its variety or depth of game mechanics, Roll offers a unique dicebuilding system which allows you to explore different strategies and synergies between upgrades. Each run will present you with new and interesting decisions creating a huge depth of strategy and keeping the game feeling always fresh. Roll is designed to be a relaxing and meditative experience. Get lost in the satisfying sounds and effects as all your worries melt away. From the minimalistic UI to the slow peaceful music, everything was designed to create the perfect zen environment. If you enjoy building an engine and watching it grow, chasing down highscores, or just need to escape from your own thoughts, then I really hope you'll enjoy my game, Roll. :)

Screenshots

One By One4 screens
Roll4 screens

Verdict

The call

The clearest difference is ads: Roll at none against One By One's shown. Roll also leads on update cadence (weekly vs every 2 weeks) and ratings volume (439 vs 77). One By One's advantage is rating (4.8 vs 4.6) and review sentiment (91% vs 78%). 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. One By One sells 3 in-app purchases, starting at $1.99 per month and Roll sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

One By One holds the better App Store score, 4.8 against 4.6. That said, the two scores are not equally well evidenced: Roll has 439 ratings behind it against 77, so its average is the more settled of the two. Written reviews point the same way: 91% of One By One's written reviews are positive against 78% of Roll's.

UpkeepUpdate frequency

One By One ships an update every 2 weeks, Roll weekly. The most recent releases landed on October 9, 2026 and October 14, 2026 respectively.

Scorecard6 real differences · 4 level
One By One versus Roll: the parameters behind the verdict, then further details
ParameterOne By OneRoll
PriceFreeFree
Rating4.8 (77 ratings) — better4.6 (439 ratings)
Positive reviews90.9% of reviews — better78.2% of reviews
Number of ratings77439 — better
Update frequencyEvery 2 weeksWeekly — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.011.0 — better
Further details — not scored
Size64 MB370 MB
Age rating4+4+
DeveloperBrice BrownJoseph Anthony Distler

Customer experience

One By One

All ratings77 ratings
Positive94.8%
Neutral1.3%
Negative3.9%
Written reviews22 reviews
Positive90.9%
Neutral4.5%
Negative4.5%

Roll

All ratings439 ratings
Positive89.5%
Neutral2.7%
Negative7.7%
Written reviews119 reviews
Positive78.2%
Neutral8.4%
Negative13.4%

Bugs and requests

One By One

Not enough reviews yet to summarise bugs or requests.

Roll

Reported bugs

4 issues
  • Upgrade shop issues
  • Crashes and freezes
  • Swiping/tapping issues
  • Incompatibility with older devices

Requested features

5 requests
  • Offline mode
  • More dice skins and customization
  • Sandbox mode with unlimited rolls
  • Improved dice management UI
  • More detailed stats and analytics

In-app purchases

3 purchases

One By One

Subscriptions2
  • Monthly Support$1.991 Month
  • Yearly Support$12.991 Year
One-time1
  • Lifetime Supporter pass$19.99
1 purchases

Roll

One-time1
  • Roll Premium$3.99

Questions

Is One By One free?
One By One is free to download, with in-app purchases available.
Is Roll free?
Roll is free to download, with in-app purchases available.
Which has better reviews, One By One or Roll?
One By One is rated higher. One By One averages 4.8 out of 5 from 77 ratings, while Roll averages 4.6 from 439 ratings.
Do One By One or Roll have ads?
One By One shows ads; Roll does not.
Which is updated more often, One By One or Roll?
One By One ships an update every 2 weeks, and Roll weekly. Most recently, One By One was updated on October 9, 2026 and Roll on October 14, 2026.

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