# RPG MO vs Undercity

The clearest difference is in-app purchases: Undercity at none against RPG MO's 6. RPG MO's advantage is device support (4 vs 2) and iOS requirement (14.0 vs 18.0). On price, update cadence and ads there is nothing between them.

Both are free to download. RPG MO sells 6 one-off in-app purchases. Undercity asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 14, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | RPG MO | Undercity |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (34 ratings)](https://appshunter.io/ios/app/rpg-mo/id601177570/reviews)** | — |
| Number of ratings | **34** | — |
| Positive reviews | 65.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 154 MB | 20 MB |
| Requires iOS | **14.0** | 18.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 12+ | 9+ |
| Developer | [Margus Ojanurme](https://appshunter.io/developer/601177573) | [Michael Skrynski](https://appshunter.io/developer/1726357834) |

## What reviewers say

### RPG MO

[App page](https://appshunter.io/ios/app/rpg-mo/id601177570)

Embark on an addictive online multiplayer role-playing adventure. Fight monsters, master 19 diverse skills, and dedicate your time to this retro-style MMORPG. Designed for adult gamers but enjoyable for younger players too.

**Highlights:** Online multiplayer role-playing, Monster combat, 19 distinct skills to master, Retro MMORPG style, Time and dedication focused gameplay

**Features:** Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 500 MOS | $4.99 | one-time |
| 1250 MOS | $11.99 | one-time |
| 2100 MOS | $19.99 | one-time |
| 3200 MOS | $29.99 | one-time |
| 5500 MOS + 2x EXP potion | $49.99 | one-time |
| 11250 MOS + two 2x EXP potions | $99.99 | one-time |


### Undercity

[App page](https://appshunter.io/ios/app/undercity/id6476277538)

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

**In-app purchases:** none


## Frequently asked questions

### Is RPG MO free?

RPG MO is free to download, with in-app purchases available.

### Is Undercity free?

Undercity is free to download, with no in-app purchases.

### Do RPG MO or Undercity have ads?

Neither RPG MO nor Undercity shows ads.

### Which is updated more often, RPG MO or Undercity?

RPG MO ships an update every 2 months, and Undercity every 2 months. Most recently, RPG MO was updated on October 14, 2026 and Undercity on October 3, 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.*