# Ukiah vs PREP Self

The clearest difference is rating: Ukiah at 5.0 against PREP Self's 3.7. Ukiah also leads on review sentiment (100% vs 67%). PREP Self's advantage is update cadence (daily vs every 3 weeks) and iOS requirement (15.6 vs 18.0). 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.

Ukiah holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 7 and 9 respectively. Written reviews point the same way: 100% of Ukiah's written reviews are positive against 67% of PREP Self's.

Ukiah ships an update every 3 weeks, PREP Self daily. The most recent releases landed on October 14, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Ukiah | PREP Self |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (7 ratings)](https://appshunter.io/ios/app/ukiah/id388469802/reviews)** | [3.7 (9 ratings)](https://appshunter.io/ios/app/prep-self-assessments-program/id6756599702/reviews) |
| Number of ratings | 7 | **9** |
| Positive reviews | **100.0% of reviews** | 66.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Daily** |
| Monetization | Free | Free |
| Size | 668 MB | 44 MB |
| Requires iOS | 18.0 | **15.6** |
| Devices | iPhone, Apple Watch | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Epic](https://appshunter.io/developer/348308666) | [American Academy of Pediatrics](https://appshunter.io/developer/409863343) |

## What reviewers say

### Ukiah

[App page](https://appshunter.io/ios/app/ukiah/id388469802)

This app allows project team members and system administrators of organizations using Epic Haiku to preview upcoming development. It requires administrator security within your organization and is not for clinical users.

**Highlights:** Preview upcoming development, For Epic Haiku organizations, Administrator access required, System administrator tool, Project team collaboration

**Features:** Siri integration, Apple Watch app

**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 Ukiah free?

Ukiah 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, Ukiah or PREP Self?

Ukiah is rated higher. Ukiah averages 5.0 out of 5 from 7 ratings, while PREP Self averages 3.7 from 9 ratings.

### Do Ukiah or PREP Self have ads?

Neither Ukiah nor PREP Self shows ads.

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

Ukiah ships an update every 3 weeks, and PREP Self daily. Most recently, Ukiah was updated on October 14, 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.*