# The Posthumous Investigation vs Error 503

The clearest difference is in-app purchases: Error 503 at none against The Posthumous Investigation's 2. Error 503 also leads on update cadence (every 2 days vs fortnightly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. The Posthumous Investigation sells 2 one-off in-app purchases. Error 503 asks for nothing beyond the download.

The Posthumous Investigation ships an update fortnightly, Error 503 every 2 days. The most recent releases landed on October 30, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | The Posthumous Investigation | Error 503 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (20 ratings)](https://appshunter.io/ios/app/the-posthumous-investigation/id1614001053/reviews)** | — |
| Number of ratings | **20** | — |
| Positive reviews | 78.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 2 days** |
| Monetization | Free | — |
| Size | 446 MB | 182 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 9+ |
| Developer | [Mother Gaia Studio](https://appshunter.io/developer/458161557) | [Ana Goncalves](https://appshunter.io/developer/1852468740) |

## What reviewers say

### The Posthumous Investigation

[App page](https://appshunter.io/ios/app/the-posthumous-investigation/id1614001053)

Engage in a time-traveling murder mystery where you manipulate a city's routines and interrogate eccentric characters. Speak with the deceased to reconstruct the case and master time mechanics to predict events in a jazzy 1930s Brazil.

**Highlights:** Manipulate city routines, Interrogate eccentric characters, Talk to the deceased victim, Master time mechanics, Experience 1930s Brazil setting

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Complete Story: Special Offer | $9.99 | one-time |
| Full Game | $12.99 | one-time |


### Error 503

[App page](https://appshunter.io/ios/app/error-503/id6755182586)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is The Posthumous Investigation free?

The Posthumous Investigation is free to download, with in-app purchases available.

### Is Error 503 free?

Error 503 is free to download, with no in-app purchases.

### Do The Posthumous Investigation or Error 503 have ads?

Neither The Posthumous Investigation nor Error 503 shows ads.

### Which is updated more often, The Posthumous Investigation or Error 503?

The Posthumous Investigation ships an update fortnightly, and Error 503 every 2 days. Most recently, The Posthumous Investigation was updated on October 30, 2026 and Error 503 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.*