# My Sister's Keeper (MSK) vs ref

The clearest difference is update cadence: ref at weekly against My Sister's Keeper (MSK)'s monthly. ref also leads on ratings volume (9 vs 1). My Sister's Keeper (MSK)'s advantage is iOS requirement (12.0 vs 17.0). On price, rating, 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.

On the App Store both sit at effectively the same score — 5.0 for My Sister's Keeper (MSK) against 5.0 for ref. That said, the two scores are not equally well evidenced: ref has 9 ratings behind it against 1, so its average is the more settled of the two.

My Sister's Keeper (MSK) ships an update monthly, ref weekly. Both last shipped on October 30, 2026.

## The numbers

| Metric | My Sister's Keeper (MSK) | ref |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/my-sisters-keeper-msk/id1636802292/reviews) | [5.0 (9 ratings)](https://appshunter.io/ios/app/ref-ology/id6747456171/reviews) |
| Number of ratings | 1 | **9** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Weekly** |
| Monetization | Free | Free |
| Size | 67 MB | 130 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 9+ |
| Developer | [Support Community, Inc.](https://appshunter.io/developer/1484074222) | [Ref-ology](https://appshunter.io/developer/1821525658) |

## What reviewers say

### My Sister's Keeper (MSK)

[App page](https://appshunter.io/ios/app/my-sisters-keeper-msk/id1636802292)

This app empowers women by providing professional coaching, mentoring, and skill development resources. It aims to help women achieve excellence in their educational, personal, and professional lives through a supportive community.

**Highlights:** Professional coaching, Mentoring relationships, Life skills acquisition, Personal development, Professional development, Community support

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


### ref

[App page](https://appshunter.io/ios/app/ref-ology/id6747456171)

This app helps referees master the inner game through reflection, presence, and practice. It offers educational resources, game film breakdowns, and live events to sharpen skills and deepen understanding. Built by officials, for officials, it provides a space to grow confidence, ask questions, and build a network.

**Highlights:** Training videos and game film analysis, Expert breakdowns, Live webinars and on-demand sessions, Mentoring opportunities, Interactive space for confidence and awareness

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

**In-app purchases:** none


## Frequently asked questions

### Is My Sister's Keeper (MSK) free?

My Sister's Keeper (MSK) is free to download, with no in-app purchases.

### Is ref free?

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

### Which has better reviews, My Sister's Keeper (MSK) or ref?

My Sister's Keeper (MSK) and ref are both rated 5.0 out of 5 on the App Store, from 1 and 9 ratings respectively.

### Do My Sister's Keeper (MSK) or ref have ads?

Neither My Sister's Keeper (MSK) nor ref shows ads.

### Which is updated more often, My Sister's Keeper (MSK) or ref?

My Sister's Keeper (MSK) ships an update monthly, and ref weekly. Most recently, My Sister's Keeper (MSK) was updated on October 30, 2026 and ref on October 30, 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.*