# Vault Armory vs Prometheus

The clearest difference is in-app purchases: Prometheus at none against Vault Armory's 6. Vault Armory's advantage is update cadence (every 11 days vs every 3 months) and ratings volume (4 vs 1). On price, rating, ads and device support there is nothing between them.

Both are free to download. Vault Armory sells 6 in-app purchases, starting at $1.99 per month. Prometheus asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Vault Armory against 5.0 for Prometheus. Both are backed by a comparable volume of ratings — 4 and 1 respectively.

Vault Armory ships an update every 11 days, Prometheus every 3 months. The most recent releases landed on October 24, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Vault Armory | Prometheus |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (4 ratings)](https://appshunter.io/ios/app/vault-armory/id6757966425/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/prometheus-age-clock-and-timer/id6757980278/reviews) |
| Number of ratings | **4** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 11 days** | Every 3 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 6 MB | 5 MB |
| Requires iOS | **17.0** | 17.6 |
| Devices | iPhone, iPad | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Fare Brothers](https://appshunter.io/developer/1869971574) | [Wouter Stierhout](https://appshunter.io/developer/1454164937) |

## What reviewers say

### Vault Armory

[App page](https://appshunter.io/ios/app/vault-armory/id6757966425)

Securely track your firearm and ammunition inventory with detailed records, photos, and receipts. This app offers end-to-end encryption for maximum privacy and an optional app lock for added security.

**Highlights:** Firearm and ammo tracking, Serial number and purchase date logging, Sales history and value tracking, Photo and document attachments, End-to-end encryption, App Lock with PIN/biometrics

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $1.99 | per month |
| Yearly | $9.99 | per year |
| Small Tip | $1.99 | one-time |
| Medium Tip | $4.99 | one-time |
| Large Tip | $9.99 | one-time |
| Generous Tip | $19.99 | one-time |


### Prometheus

[App page](https://appshunter.io/ios/app/prometheus-age-clock-and-timer/id6757980278)

Visualize your life as a continuously updating clock, down to 10 decimal places. Track unique milestones and explore life statistics. Available on iPhone and Apple Watch with customizable widgets and complications.

**Highlights:** Decimal age clock, Life milestone countdowns, Detailed life statistics, Apple Watch app and complications, Home and Lock Screen widgets, Live Activities support

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Vault Armory free?

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

### Is Prometheus free?

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

### Which has better reviews, Vault Armory or Prometheus?

Vault Armory and Prometheus are both rated 5.0 out of 5 on the App Store, from 4 and 1 ratings respectively.

### Do Vault Armory or Prometheus have ads?

Neither Vault Armory nor Prometheus shows ads.

### Which is updated more often, Vault Armory or Prometheus?

Vault Armory ships an update every 11 days, and Prometheus every 3 months. Most recently, Vault Armory was updated on October 24, 2026 and Prometheus on October 19, 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.*