# Interloper vs Ocean Keeper

The clearest difference is price: Ocean Keeper at Free against Interloper's $1.99. Ocean Keeper also leads on update cadence (every 4 days vs fortnightly). Interloper's advantage is in-app purchases (none vs 4) and ads (none vs shown). On rating, ratings volume, device support and iOS requirement there is nothing between them.

Ocean Keeper is free to download; Interloper costs $1.99 up front. Ocean Keeper sells 4 one-off in-app purchases. Interloper asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.5 for Interloper against 4.4 for Ocean Keeper. Both are backed by a comparable volume of ratings — 534 and 291 respectively. Written reviews are what separate them: 67% of Interloper's written reviews are positive against 48% of Ocean Keeper's.

Interloper ships an update fortnightly, Ocean Keeper every 4 days. The most recent releases landed on November 2, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Interloper | Ocean Keeper |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[4.5 (534 ratings)](https://appshunter.io/ios/app/interloper/id1447337759/reviews)** | [4.4 (291 ratings)](https://appshunter.io/ios/app/ocean-keeper-dome-survival/id6642704130/reviews) |
| Number of ratings | **534** | 291 |
| Positive reviews | **66.8% of reviews** | 48.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Fortnightly | **Every 4 days** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 200 MB | 272 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | **iPhone, iPad, iPod, Mac, Apple TV** | iPhone, iPad, iPod, Mac |
| Age rating | 12+ | 9+ |
| Developer | [Mathew Purchase](https://appshunter.io/developer/1086795797) | [RetroStyle Games](https://appshunter.io/developer/346884811) |

## What reviewers say

### Interloper

[App page](https://appshunter.io/ios/app/interloper/id1447337759)

Experience intense space combat with a six-degrees-of-freedom flight simulator. Engage in fast-paced missions, customize your fighter with various load-outs, and build your arsenal with salvaged gear. Play solo or with elite squadrons.

**Highlights:** Six degrees of freedom flight, MFi controller support, Intense haptics, Fast-paced missions, Fighter customization, Salvaged gear and arsenal building, Squadron support

**Features:** Game Controller support, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Excellent gameplay and controls
- 🚀 Immersive space combat experience
- 🚀 Satisfying weapon feedback
- 👍 Unique and appealing visual style
- 👍 Good value for the price

**What reviewers complain about**

- 🐛 Frequent crashes and bugs
- 🐛 Progression and save issues
- 🔋 Overheating and battery drain on some devices
- 🔒 Unresponsive or confusing UI controls
- 🔒 Difficulty balancing and progression

**Reported bugs**

- Tutorial not functioning properly
- Weapons not firing correctly
- Missions getting stuck or not completing
- Inconsistent save and progression tracking
- UI elements overlapping or disappearing

**Requested features**

- Multiplayer mode
- Expanded mission and level variety
- Pilot and ship customization options
- Clearer progression and reward systems
- Performance optimizations for older devices


### Ocean Keeper

[App page](https://appshunter.io/ios/app/ocean-keeper-dome-survival/id6642704130)

Explore procedurally generated underwater caves as a crashed miner in this roguelike shooter. Dig for resources, battle hordes of sea monsters, and upgrade your mech and weapons to survive. Each playthrough offers a unique challenge with changing layouts and diverse bosses.

**Highlights:** Procedurally generated caves, Mech customization, Horde battles with monsters and bosses, Meta-progression system, Artifact system, Multiple weapon choices, Diverse biomes

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Game Unlock | $2.99 | one-time |
| Heap of meta currency | $2.99 | one-time |
| Chest of meta currency | $4.99 | one-time |
| Crate of meta currency | $9.99 | one-time |

**What reviewers like**

- 🫰🏻 Stunning ocean-themed visuals
- 🎮 Engaging roguelike gameplay
- 🕹️ Addictive and fun horde battles
- 🔝 Rewarding resource gathering and crafting
- 🕰️ Casual gameplay for short sessions

**What reviewers complain about**

- 💰 Pay-to-play model after free trial
- 📱 Illegible UI on mobile devices
- 🤑 Unfair IAP practices, requiring repurchase
- 🐛 Bugs and crashes, especially after purchases

**Reported bugs**

- Game not loading after purchase
- Upgrade options not functioning as expected
- Progress not saving across sessions

**Requested features**

- More items and upgrades to prolong engagement
- Ability to restore purchases and continue progress
- Improved UI scaling and readability on mobile
- Expanded gameplay modes and story elements


## Frequently asked questions

### Is Interloper free?

Interloper costs $1.99, with no in-app purchases.

### Is Ocean Keeper free?

Ocean Keeper is free to download, with in-app purchases available.

### Which has better reviews, Interloper or Ocean Keeper?

Interloper is rated higher. Interloper averages 4.5 out of 5 from 534 ratings, while Ocean Keeper averages 4.4 from 291 ratings.

### Do Interloper or Ocean Keeper have ads?

Ocean Keeper shows ads; Interloper does not.

### Which is updated more often, Interloper or Ocean Keeper?

Interloper ships an update fortnightly, and Ocean Keeper every 4 days. Most recently, Interloper was updated on November 2, 2026 and Ocean Keeper on October 30, 2026.

---

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