# LCAST vs PREP Self

The clearest difference is review sentiment: PREP Self at 67% against LCAST's 0%. PREP Self also leads on update cadence (daily vs every 21 months). LCAST's advantage is rating (4.3 vs 3.7) and iOS requirement (9.0 vs 15.6). On price, ratings volume, 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.

LCAST holds the better App Store score, 4.3 against 3.7. Both are backed by a comparable volume of ratings — 8 and 9 respectively. Written reviews complicate that: 0% of LCAST's written reviews are positive against 67% of PREP Self's, so the app with the better star average is not the one people write more warmly about.

LCAST ships an update every 21 months, PREP Self daily. The most recent releases landed on October 1, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | LCAST | PREP Self |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (8 ratings)](https://appshunter.io/ios/app/lcast/id1663066252/reviews)** | [3.7 (9 ratings)](https://appshunter.io/ios/app/prep-self-assessments-program/id6756599702/reviews) |
| Number of ratings | 8 | **9** |
| Positive reviews | 0.0% of reviews | **66.7% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 21 months | **Daily** |
| Monetization | Free | Free |
| Size | 146 MB | 44 MB |
| Requires iOS | **9.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [igNew, LLC dba Slingshot](https://appshunter.io/developer/1663066254) | [American Academy of Pediatrics](https://appshunter.io/developer/409863343) |

## What reviewers say

### LCAST

[App page](https://appshunter.io/ios/app/lcast/id1663066252)

This medical tool aids healthcare professionals in assessing the plausibility of bruising in young children. It utilizes a validated clinical decision rule to help identify potential abuse by analyzing bruise characteristics and body locations. The app serves as a screening tool to inform decision-making and educate users on bruising patterns.

**Highlights:** Bruising clinical decision rule (TEN-4-FACESp), Interactive 3D body model for inputting observations, Compares bruise findings to published evidence, Screening tool for children under 4.0 years, Educational tool for healthcare providers, Data based on multi-center NIH-funded study

**Features:** Vision Pro support

**In-app purchases:** none


### PREP Self

[App page](https://appshunter.io/ios/app/prep-self-assessments-program/id6756599702)

Access trusted pediatric learning content through a new mobile app. Build a personalized question bank by selecting blocks from various content areas to fit your learning style and schedule. Earn CME credits and MOC points with each block.

**Highlights:** Trusted PREP content, Customizable question bank, Case-based questions, Earn CME credits, Earn MOC points, Modern user interface

**In-app purchases:** none


## Frequently asked questions

### Is LCAST free?

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

### Is PREP Self free?

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

### Which has better reviews, LCAST or PREP Self?

LCAST is rated higher. LCAST averages 4.3 out of 5 from 8 ratings, while PREP Self averages 3.7 from 9 ratings.

### Do LCAST or PREP Self have ads?

Neither LCAST nor PREP Self shows ads.

### Which is updated more often, LCAST or PREP Self?

LCAST ships an update every 21 months, and PREP Self daily. Most recently, LCAST was updated on October 1, 2026 and PREP Self on September 22, 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.*