# Called to Serve vs Mu Lambda

The clearest difference is rating: Mu Lambda at 4.0 against Called to Serve's 3.4. Mu Lambda also leads on in-app purchases (none vs 4) and update cadence (every 5 days vs every 2 months). Called to Serve's advantage is ratings volume (25 vs 1). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Called to Serve sells 4 in-app purchases, starting at $12.00 per month. Mu Lambda asks for nothing beyond the download.

Mu Lambda holds the better App Store score, 4.0 against 3.4. That said, the two scores are not equally well evidenced: Called to Serve has 25 ratings behind it against 1, so its average is the more settled of the two.

Called to Serve ships an update every 2 months, Mu Lambda every 5 days. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Called to Serve | Mu Lambda |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.4 (25 ratings)](https://appshunter.io/ios/app/called-to-serve/id1001731039/reviews) | **[4.0 (1 ratings)](https://appshunter.io/ios/app/mu-lambda/id1488809648/reviews)** |
| Number of ratings | **25** | 1 |
| Positive reviews | 47.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 days** |
| Monetization | Freemium | **Free** |
| Size | 19 MB | 37 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Latter-day Apps](https://appshunter.io/developer/1509752714) | [Ricardo Cumberbatch](https://appshunter.io/developer/1455104172) |

## What reviewers say

### Called to Serve

[App page](https://appshunter.io/ios/app/called-to-serve/id1001731039)

Connect with LDS missionaries and their families. Share mission experiences, track service progress with countdowns and location maps, and send messages, photos, and audio recordings directly to missionaries.

**Highlights:** Track unlimited missionaries, Countdown to departure/return, Map missionary locations, Send messages, photos, audio, View local time and weather, Access mission information

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $12.00 | per month |
| Smart | $20.00 | per month |
| Premium | $119.99 | per year |
| Smart | $200.00 | per year |


### Mu Lambda

[App page](https://appshunter.io/ios/app/mu-lambda/id1488809648)

Connect with fellow chapter members, stay updated on events, and access chapter resources. This app facilitates communication, event participation, and access to important chapter documents and directories.

**Highlights:** Event notifications, Chapter member chat, View chapter documents, Access chapter directory, Read monthly magazine, Pay chapter dues

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Called to Serve free?

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

### Is Mu Lambda free?

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

### Which has better reviews, Called to Serve or Mu Lambda?

Mu Lambda is rated higher. Called to Serve averages 3.4 out of 5 from 25 ratings, while Mu Lambda averages 4.0 from 1 ratings.

### Do Called to Serve or Mu Lambda have ads?

Neither Called to Serve nor Mu Lambda shows ads.

### Which is updated more often, Called to Serve or Mu Lambda?

Called to Serve ships an update every 2 months, and Mu Lambda every 5 days. Most recently, Called to Serve was updated on November 1, 2026 and Mu Lambda on November 3, 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.*