# DepthDrift vs Sunken Vault

The clearest difference is price: Sunken Vault at Free against DepthDrift's $3.99. Sunken Vault also leads on rating (4.0 vs 1.0). DepthDrift's advantage is in-app purchases (none vs 1) and update cadence (every 6 days vs every 3 weeks). On ratings volume, ads, device support and iOS requirement there is nothing between them.

Sunken Vault is free to download; DepthDrift costs $3.99 up front. Sunken Vault sells 1 one-off in-app purchase. DepthDrift asks for nothing beyond the download.

Sunken Vault holds the better App Store score, 4.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

DepthDrift ships an update every 6 days, Sunken Vault every 3 weeks. The most recent releases landed on November 5, 2026 and November 13, 2026 respectively.

## The numbers

| Metric | DepthDrift | Sunken Vault |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/depthdrift-idle-cave-rpg/id6748545569/reviews) | **[4.0 (1 ratings)](https://appshunter.io/ios/app/sunken-vault/id6816782045/reviews)** |
| Number of ratings | 1 | 1 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 3 weeks |
| Monetization | Paid | — |
| Size | 8 MB | 115 MB |
| Requires iOS | 18.5 | **17.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 9+ | 12+ |
| Developer | [Takumi Kanzaki](https://appshunter.io/developer/1820952468) | [Overtime Innovations LLC](https://appshunter.io/developer/1874782702) |

## What reviewers say

### DepthDrift

[App page](https://appshunter.io/ios/app/depthdrift-idle-cave-rpg/id6748545569)

Explore mysterious caves and build a team of unique characters in this idle RPG. Your team battles and collects treasure even while you're offline. Craft gear, research technology, and upgrade your base for permanent progression.

**Highlights:** Idle exploration and combat, Six unique character classes, Base building and facility upgrades, Equipment crafting and enhancement, Research for permanent bonuses, No ads or pay-to-win mechanics

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

**In-app purchases:** none


### Sunken Vault

[App page](https://appshunter.io/ios/app/sunken-vault/id6816782045)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Game | $4.99 | one-time |


## Frequently asked questions

### Is DepthDrift free?

DepthDrift costs $3.99, with no in-app purchases.

### Is Sunken Vault free?

Sunken Vault is free to download, with in-app purchases available.

### Which has better reviews, DepthDrift or Sunken Vault?

Sunken Vault is rated higher. DepthDrift averages 1.0 out of 5 from 1 ratings, while Sunken Vault averages 4.0 from 1 ratings.

### Do DepthDrift or Sunken Vault have ads?

Neither DepthDrift nor Sunken Vault shows ads.

### Which is updated more often, DepthDrift or Sunken Vault?

DepthDrift ships an update every 6 days, and Sunken Vault every 3 weeks. Most recently, DepthDrift was updated on November 5, 2026 and Sunken Vault on November 13, 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.*