# Fides et Ratio vs AISUS

The clearest difference is in-app purchases: Fides et Ratio at none against AISUS's 10. Fides et Ratio also leads on update cadence (daily vs every 2 weeks) and iOS requirement (15.1 vs 17.6). On price, ads and device support there is nothing between them.

Both are free to download. AISUS sells 10 in-app purchases, starting at $3.99 per month. Fides et Ratio asks for nothing beyond the download.

Fides et Ratio ships an update daily, AISUS every 2 weeks. The most recent releases landed on October 30, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | Fides et Ratio | AISUS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/fides-et-ratio/id6754965341/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Daily** | Every 2 weeks |
| Monetization | Free | — |
| Size | 120 MB | 30 MB |
| Requires iOS | **15.1** | 17.6 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [MELNI APPS LLC](https://appshunter.io/developer/1840755579) | [Vini Labs LLC](https://appshunter.io/developer/1857827239) |

## What reviewers say

### Fides et Ratio

[App page](https://appshunter.io/ios/app/fides-et-ratio/id6754965341)

This app offers a comprehensive resource for Catholic spiritual life, featuring audio courses, AI-powered faith guidance, inspiring videos, and live Christian radio. It provides daily quotes, news, and customizable themes. All content is free and ad-free.

**Highlights:** Audio courses with progress saving, AI assistant for faith questions, Inspirational video content, Live Christian radio stream, Daily quotes and news updates, Background playback and themes

**In-app purchases:** none


### AISUS

[App page](https://appshunter.io/ios/app/aisus/id6755982176)

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Camino (monthly subscription) | $3.99 | per month |
| Luz (monthly subscription) | $4.99 | per month |
| Path (yearly subscription) | $39.99 | per year |
| Luz (yearly subscription) | $49.99 | per year |
| Amor (yearly subscription) | $119.99 | per year |
| Pack PACK15_BASIC | $0.99 | one-time |
| Pack PACK100_ADV | $3.99 | one-time |
| Pack PACK100_BASIC | $3.99 | one-time |
| Pack PACK200_BASIC | $5.99 | one-time |
| Pack PACK200_ADV | $8.99 | one-time |


## Frequently asked questions

### Is Fides et Ratio free?

Fides et Ratio is free to download, with no in-app purchases.

### Is AISUS free?

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

### Do Fides et Ratio or AISUS have ads?

Neither Fides et Ratio nor AISUS shows ads.

### Which is updated more often, Fides et Ratio or AISUS?

Fides et Ratio ships an update daily, and AISUS every 2 weeks. Most recently, Fides et Ratio was updated on October 30, 2026 and AISUS on November 9, 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.*