# Summoner Slime Incremental RPG vs OnceWorld

The clearest difference is rating: OnceWorld at 4.9 against Summoner Slime Incremental RPG's 4.3. OnceWorld also leads on update cadence (every 2 days vs every 8 days) and ratings volume (132 vs 6). Summoner Slime Incremental RPG's advantage is ads (none vs shown). On price, review sentiment, in-app purchases and monetization model there is nothing between them.

Both are free to download. Summoner Slime Incremental RPG sells 10 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.

OnceWorld holds the better App Store score, 4.9 against 4.3. That said, the two scores are not equally well evidenced: OnceWorld has 132 ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 55% of Summoner Slime Incremental RPG's written reviews are positive against 58% of OnceWorld's.

Summoner Slime Incremental RPG ships an update every 8 days, OnceWorld every 2 days. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Summoner Slime Incremental RPG | OnceWorld |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (6 ratings)](https://appshunter.io/ios/app/summoner-slime-incremental-rpg/id6470303494/reviews) | **[4.9 (132 ratings)](https://appshunter.io/ios/app/onceworld/id6753948618/reviews)** |
| Number of ratings | 6 | **132** |
| Positive reviews | 55.2% of reviews | **58.1% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 8 days | **Every 2 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 283 MB | 325 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [ChoBit Inc.](https://appshunter.io/developer/1713369189) | [PONIX LLC](https://appshunter.io/developer/1071402258) |

## What reviewers say

### Summoner Slime Incremental RPG

[App page](https://appshunter.io/ios/app/summoner-slime-incremental-rpg/id6470303494)

Embark on an RPG adventure as a slime, uncovering the mystery of your transformation. Befriend and summon monsters, evolve your slime through multiple stages, and master strategic skills to build the ultimate team. Enjoy deep gameplay with reincarnation loops and idle progression.

**Highlights:** Monster summoning and befriending, Slime evolution with branching paths, Strategic skill usage in battles, Reincarnation loop progression, Idle gameplay options, Team building and party formation

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Magic Gem I | $0.99 | one-time |
| Magic Gem Ⅱ | $2.99 | one-time |
| Auto Material Collection | $2.99 | one-time |
| Auto Skill Activation | $4.99 | one-time |
| Magic Gem Ⅲ | $4.99 | one-time |
| Treasure Chest Pack | $4.99 | one-time |
| Magic Gem Ⅳ | $6.99 | one-time |
| Double Speed Mode Unlocked | $9.90 | one-time |
| Ad Removal | $9.99 | one-time |
| Magic Gem Ⅴ | $9.99 | one-time |

**What reviewers like**

- 🚀 Fast paced gameplay
- 👍 Addictive and fun
- 💎 Lots of content and progression
- 🐱 Cute character designs

**What reviewers complain about**

- 🐛 Frequent crashes and performance issues
- 🔋 Overheating and battery drain
- 📦 Tedious inventory management
- 🕰️ Slow progression without grinding

**Reported bugs**

- Inability to progress past certain levels
- Inventory items disappearing or not registering properly
- Skill upgrades not working as intended
- Crashes when accessing certain menus

**Requested features**

- Auto-play or auto-repeat features
- Bulk opening of treasure chests
- More customization options
- Improved enemy AI and balancing


### OnceWorld

[App page](https://appshunter.io/ios/app/onceworld/id6753948618)

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:** macOS Compatibility, Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Crystals 10 | $0.99 | one-time |
| Crystal 50 | $4.99 | one-time |
| Crystal 150 | $14.99 | one-time |
| Crystal 300 | $29.99 | one-time |
| Crystal 600 | $59.99 | one-time |
| Crystal 1000 | $99.99 | one-time |


## Frequently asked questions

### Is Summoner Slime Incremental RPG free?

Summoner Slime Incremental 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, Summoner Slime Incremental RPG or OnceWorld?

OnceWorld is rated higher. Summoner Slime Incremental RPG averages 4.3 out of 5 from 6 ratings, while OnceWorld averages 4.9 from 132 ratings.

### Do Summoner Slime Incremental RPG or OnceWorld have ads?

OnceWorld shows ads; Summoner Slime Incremental RPG does not.

### Which is updated more often, Summoner Slime Incremental RPG or OnceWorld?

Summoner Slime Incremental RPG ships an update every 8 days, and OnceWorld every 2 days. Most recently, Summoner Slime Incremental RPG was updated on October 25, 2026 and OnceWorld on October 28, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*