Comparison

Levelup RPG vs OnceWorld

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

Head to head
About

Levelup RPG

Embark on an adventure to hunt endlessly spawning monsters on an island. Level up infinitely, gather crystals to acquire powerful swords, and upgrade your equipment. Progress through the game by meeting specific conditions to unlock new areas and ultimately confront the Demon King.

Highlights
  • Infinite monster hunting
  • Infinite leveling system
  • Crystal collection for swords
  • Sword leveling and synthesis
  • Skill panel for stat upgrades
  • Area unlocking through conditions
Features
Read full description

========================== Game introduction ========================== Hunt the monsters that overflow all over the island Since monsters spring up infinitely, you can raise the level infinitely! !! Get crystals when you raise the level! Get a powerful sword with crystals! !! ========================== how to play ========================== Let's defeat the monsters! By satisfying the conditions, the area that can be moved will increase! What are the conditions ... ・ Raise to a certain level. -Defeat a specific monster. Such... ========================== End content ========================== Subjugation of the Demon King sleeping on the island ========================== Method of operation ========================== Move ... Scroll the bottom half of the screen Camera move ... Scroll the top half of the screen left and right battle... Press the [Strike] button to approach the enemy escape... Press the [Nigeru] button. (Even if you approach the enemy, it will not be a battle) recovery... Press the [Kaifuku] button. Recovers 20% of HP ========================== Additional content ========================== Raise the level of the sword ... Using materials that monsters drop, You can raise the level of your sword! !! Sword synthesis ... If you have duplicate swords, combine the swords and Power up. (Separate from level up) Skill panel ... Skill points will be allocated as you level up. By using skill points, the hero's stats will increase.

About

OnceWorld

Experience a nostalgic 2D solo RPG that blends classic MMO charm with modern mobile convenience. Level up, customize your character with stat distribution, enhance gear, collect pets, and battle through a deep progression system.

Highlights
  • Stat distribution for character customization
  • Equipment enhancement and set bonuses
  • Monster capture and pet raising
  • Material collection for crafting and upgrades
  • Reincarnation system for continued growth
  • Abyss Corridor ranked mode
Features
Read full description

OnceWorld is a simple and casual 2D solo-play RPG. Relive the charm of classic MMOs from the good old days — now reimagined for mobile with easy controls and deep progression! Level up, reincarnate, raise pets, awaken equipment, collect materials, and battle in the arena — all in one nostalgic adventure. It’s an RPG that brings the essence of those mid-2000s MMORPGs to your smartphone, blending nostalgia with modern convenience. ▼ Stat Distribution Distribute points into seven basic stats to develop your character. Points are earned as your hero levels up. To reset your distribution, you’ll need a special item. Stat meanings: VIT – Increases HP SPD – Attack speed & number of strikes ATK – Physical attack power INT – Magic attack power & SP capacity DEF – Mainly physical defense power M.DEF – Mainly magical defense power LUK – Evasion & Physical Critical ▼ Weapons & Armor Equip one weapon and five armor pieces. Wearing all five pieces of a matching set grants a set bonus. Use the heart icon at the top-left to toggle your favorite gear display. ▼ Equipment Enhancement Use materials obtained during your adventures to enhance your gear. Each enhancement attempt has a success rate — failure consumes the materials, but the item itself will never break. Some special items can increase success rates. ▼ Accessories Accessories grant special effects when equipped. Defeating enemies while an accessory is equipped will level it up, enhancing its effects over time. ▼ Magic Spend SP to cast powerful spells. Magic attacks cannot be evaded and there are no critical hits. Certain rare materials may further amplify spell power. ▼ Monsters & Pets By carrying a special material, you’ll gain the ability to capture monsters. Captured monsters become pets that grow stronger as they fight alongside you. Some monsters learn skills as they level up. These skills can activate even without being summoned, as long as the monster is accompanying you. Pet switching can only be done at the Pet Keeper in your hometown. Feeding specific materials will raise a pet’s stats. ▼ Monster Encyclopedia Once defeated, monsters are added to the encyclopedia where their stats can be viewed. Captured monsters will display a “Caught” mark. ▼ Materials Materials are divided into three categories: Normal Materials  Used for equipment enhancement and trading. Effect Materials  Provide passive bonuses simply by owning them.  Have a smaller carrying limit. Key Items  Only one can be held.  Cannot be dropped or sold. ▼ Items Items that grant various benefits during adventures. You can assign them to shortcut slots for quick use in the field. Swap registered items using the arrow icon beside the item list. ▼ Reincarnation When your hero reaches the level cap, you can reincarnate. Reincarnation resets your level but increases your level cap and available stat points, allowing for further growth. ▼ Abyss Corridor A ranked mode that can be played a limited number of times per day. Clear each floor by defeating all monsters as fast as possible — faster times rank higher. Treasure chests appear as rewards on each floor. Only Save Slot 1 is eligible for ranking participation. ▼ Arena Watch monster battles. Watch monster battles held several times a day. Choose the strongest team from three teams and watch the battle. Earn Arena Coins if your favorite team wins. Try exchanging them for valuable materials at the Arena Shop. ▼ About the Kin-Slayer Rite ▼ The Kin-Slayer Rite is a ceremony in which the target pet’s kin-bond, level, and accumulated experience are all returned to zero in exchange for enhancing its base stats. A monster that undergoes this rite will gain experience at a slower rate thereafter.

Screenshots

Levelup RPG4 screens
OnceWorld4 screens

Verdict

The call

The clearest difference is update cadence: OnceWorld at every 2 days against Levelup RPG's every 2 weeks. OnceWorld also leads on rating (4.9 vs 4.7). On price, review sentiment, ratings volume and ads 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. Levelup RPG sells 14 one-off in-app purchases and OnceWorld sells 6 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

OnceWorld holds the better App Store score, 4.9 against 4.7. Both are backed by a comparable volume of ratings — 375 and 130 respectively. Written reviews complicate that: 65% of Levelup RPG's written reviews are positive against 58% of OnceWorld's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Levelup RPG ships an update every 2 weeks, OnceWorld every 2 days. Both last shipped on October 18, 2026.

Scorecard2 real differences · 8 level
Levelup RPG versus OnceWorld: the parameters behind the verdict, then further details
ParameterLevelup RPGOnceWorld
PriceFreeFree
Rating4.7 (375 ratings)4.9 (130 ratings) — better
Positive reviews65.3% of reviews — better58.1% of reviews
Number of ratings375 — better130
Update frequencyEvery 2 weeksEvery 2 days — better
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size556 MB325 MB
Age rating9+12+
DeveloperYOSHIYUKI NAKASHIMAPONIX LLC

Customer experience

Levelup RPG

All ratings375 ratings
Positive94.7%
Neutral1.6%
Negative3.7%
Written reviews121 reviews
Positive65.3%
Neutral11.6%
Negative23.1%

OnceWorld

All ratings130 ratings
Positive96.2%
Neutral3.1%
Negative0.8%
Written reviews74 reviews
Positive58.1%
Neutral9.5%
Negative32.4%

Bugs and requests

Levelup RPG

Reported bugs

4 issues
  • Inability to log in after major updates
  • Purchased items not properly reflected
  • Inconsistent drop rates for rare materials
  • Crashes and performance issues on some devices

Requested features

7 requests
  • Add character customization
  • Improve translation quality
  • Increase level/stat cap
  • Implement auto-farm/auto-battle
  • Add more diverse equipment/accessories
Show 2 more
  • Improve UI/UX for smoother experience
  • Introduce multiplayer and social features

OnceWorld

Not enough reviews yet to summarise bugs or requests.

In-app purchases

14 purchases

Levelup RPG

One-time14
  • magic stone x5$1.99
  • Banner Ad Removed$2.99
  • Interstitial Ad Removed$2.99
Show 11 more
  • revised edit Banner Ad Removed$2.99
  • New Interstitial Ad Removed$2.99
  • Boost ad removal (1 week)$2.99
  • magic stone x20$3.99
  • Video Ad Removed$3.99
  • New Video Ad Removed$3.99
  • Limited time pack$5.99
  • magic stone x50$6.99
  • Boost ad removal (1 month)$9.99
  • magic stone x100$11.99
  • All ads removal pack$29.99
6 purchases

OnceWorld

One-time6
  • Crystals 10$0.99
  • Crystal 50$4.99
  • Crystal 150$14.99
Show 3 more
  • Crystal 300$29.99
  • Crystal 600$59.99
  • Crystal 1000$99.99

Questions

Is Levelup RPG free?
Levelup RPG is free to download, with in-app purchases available.
Is OnceWorld free?
OnceWorld is free to download, with in-app purchases available.
Which has better reviews, Levelup RPG or OnceWorld?
OnceWorld is rated higher. Levelup RPG averages 4.7 out of 5 from 375 ratings, while OnceWorld averages 4.9 from 130 ratings.
Do Levelup RPG or OnceWorld have ads?
Both Levelup RPG and OnceWorld show ads.
Which is updated more often, Levelup RPG or OnceWorld?
Levelup RPG ships an update every 2 weeks, and OnceWorld every 2 days. Most recently, Levelup RPG was updated on October 18, 2026 and OnceWorld on October 18, 2026.

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