Comparison

One By One vs Loop Hero

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

Loop Hero

This roguelike RPG lets you strategically place cards to build unique expedition loops for your hero. Collect loot, expand your camp, and unlock new classes and abilities to break an endless cycle of chaos. Experience a dark fantasy story with retro pixel art, optimized for mobile play.

Highlights
  • Randomly generated expedition loops
  • Card-based strategic placement
  • Loot collection and equipment management
  • Camp expansion and upgrades
  • Unlockable classes and cards
  • Retro pixel art style
  • Mobile-optimized interface
Features
Read full description

*Try Loop Hero for free and unlock the full game for the whole adventure!* The Lich has thrown the world into a timeless loop and plunged its inhabitants into never ending chaos. In this roguelike RPG, wield an expanding deck of mystical cards to place enemies, buildings, and terrain along each unique expedition loop for the brave hero. Recover and equip powerful loot for each class of hero for their battles and expand the survivors' camp to reinforce each adventure through the loop. Unlock new classes, new cards, and devious guardians on your quest to shatter the endless cycle of despair. FEATURES - Explore an endless number of paths: bring your hero on randomly generated loops and never experience the same run twice. - Shape your expeditions into darkness: build your deck and place your cards to script your hero’s trials and tribulations. - Loot as you loop to rebuild the world: recover your memories as you collect equipment and resources to become stronger, reconstruct your camp and get your reality back. - Plunge into a gloomy universe: discover a melancholic dark fantasy story told through a retro pixel art direction and recollect the memories of this world. - Break the cycle: triumph over mighty bosses to free the world from the Lich’s neverending time loop. CAREFULLY REDESIGNED FOR MOBILE - Revamped interface – exclusive mobile UI with complete touch control - Game Center achievements - Cloud Save – Share your progress between iOS devices - Compatible with MFi controllers - iPhone 15 Optimization (including Pro Max)

Screenshots

One By One4 screens
Loop Hero4 screens

Verdict

The call

The clearest difference is ads: Loop Hero at none against One By One's shown. Loop Hero also leads on monetization model (free vs free with in-app purchases) and ratings volume (4K vs 77). One By One's advantage is review sentiment (91% vs 75%). On price, rating, 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

Both are free to download. One By One sells 3 in-app purchases, starting at $1.99 per month and Loop Hero 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

On the App Store both sit at effectively the same score — 4.8 for One By One against 4.9 for Loop Hero. That said, the two scores are not equally well evidenced: Loop Hero has 4K ratings behind it against 77, so its average is the more settled of the two. Written reviews are what separate them: 91% of One By One's written reviews are positive against 75% of Loop Hero's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on November 3, 2026 and November 12, 2026 respectively.

Scorecard4 real differences · 6 level
One By One versus Loop Hero: the parameters behind the verdict, then further details
ParameterOne By OneLoop Hero
PriceFreeFree
Rating4.8 (77 ratings)4.9 (4K ratings) — better
Positive reviews90.9% of reviews — better75.0% of reviews
Number of ratings774K — better
Update frequencyEvery 2 weeksEvery 2 weeks
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size64 MB228 MB
Age rating4+9+
DeveloperBrice BrownPlaydigious

Customer experience

One By One

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

Loop Hero

All ratings3,939 ratings
Positive97.4%
Neutral0.7%
Negative1.8%
Written reviews288 reviews
Positive75.0%
Neutral6.6%
Negative18.4%

Bugs and requests

One By One

Not enough reviews yet to summarise bugs or requests.

Loop Hero

Reported bugs

3 issues
  • Game crashes after defeating first boss
  • Unplayable after initial progress
  • Inability to progress past trial version

Requested features

4 requests
  • Portrait mode
  • More classes/build diversity
  • Improved UI/overlay customization
  • Chinese language support

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

Loop Hero

One-time1
  • Unlock Full Game$6.99

Questions

Is One By One free?
One By One is free to download, with in-app purchases available.
Is Loop Hero free?
Loop Hero is free to download, with in-app purchases available.
Which has better reviews, One By One or Loop Hero?
Loop Hero is rated higher. One By One averages 4.8 out of 5 from 77 ratings, while Loop Hero averages 4.9 from 4K ratings.
Do One By One or Loop Hero have ads?
One By One shows ads; Loop Hero does not.
Which is updated more often, One By One or Loop Hero?
One By One ships an update every 2 weeks, and Loop Hero every 2 weeks. Most recently, One By One was updated on November 3, 2026 and Loop Hero on November 12, 2026.

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