# iMass vs Lettermen's Propane KC

The clearest difference is iOS requirement: Lettermen's Propane KC at 12.2 against iMass's 17.6. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

iMass ships an update every 3 months, Lettermen's Propane KC every 4 months. The most recent releases landed on October 15, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | iMass | Lettermen's Propane KC |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (81 ratings)](https://appshunter.io/ios/app/imass/id381131668/reviews)** | — |
| Number of ratings | **81** | — |
| Positive reviews | 77.8% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 4 months |
| Monetization | Free | — |
| Size | 125 MB | 56 MB |
| Requires iOS | 17.6 | **12.2** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [James Fryar](https://appshunter.io/developer/381131671) | [Rural Computer Consultants, Inc.](https://appshunter.io/developer/640795441) |

## What reviewers say

### iMass

[App page](https://appshunter.io/ios/app/imass/id381131668)

Access the Traditional Catholic Latin Mass live or on-demand from anywhere in the world. Find nearby Mass locations with times and directions, and follow along with an integrated missal. Includes the Divine Office and official blessings.

**Highlights:** Live streaming of Latin Mass, On-demand Mass viewing, Latin Mass location finder, Integrated missal, Breviary (Divine Office), Rituale (1962 blessings)

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

**In-app purchases:** none

**What reviewers like**

- ✨ Comprehensive missal and breviary resources
- 📱 Convenient access to Traditional Latin Mass anytime
- 🎥 Live streaming of daily masses
- 📖 Bilingual Latin and English text
- 🎯 Well-organized mass structure with rubrics

**What reviewers complain about**

- 🐛 Frequent app crashes and freezing
- 📵 Requires constant internet connection
- 🔤 Font size too small on some devices
- ⚙️ Poor compatibility with older devices
- 🎬 Low quality audio with buzzing and background noise

**Reported bugs**

- Missing 'Ecce Agnus Dei' and 'Domine non sum dignus' prayers
- Psalm verse numbering incorrect
- App crashes after July 23 update on Android tablets
- Video pausing causes restart when clicking other links
- Language switching resets to beginning of mass

**Requested features**

- Offline download capability for missals and propers
- Filter option for mass propers only
- Skip to different breviary sections
- Display feast name and ranking for each day
- Store ordinary of the mass in app without downloading


### Lettermen's Propane KC

[App page](https://appshunter.io/ios/app/lettermens-propane-kc/id6444366472)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is iMass free?

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

### Is Lettermen's Propane KC free?

Lettermen's Propane KC is free to download, with no in-app purchases.

### Do iMass or Lettermen's Propane KC have ads?

Neither iMass nor Lettermen's Propane KC shows ads.

### Which is updated more often, iMass or Lettermen's Propane KC?

iMass ships an update every 3 months, and Lettermen's Propane KC every 4 months. Most recently, iMass was updated on October 15, 2026 and Lettermen's Propane KC on October 6, 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.*