# 66 Days vs MemoryU

The clearest difference is in-app purchases: MemoryU at none against 66 Days's 2. MemoryU also leads on iOS requirement (15.1 vs 17.0). 66 Days's advantage is ratings volume (228 vs 1). On price, rating, ads and device support there is nothing between them.

Both are free to download. 66 Days sells 2 in-app purchases, starting at $15.99 per month. MemoryU asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.9 for 66 Days against 5.0 for MemoryU. That said, the two scores are not equally well evidenced: 66 Days has 228 ratings behind it against 1, so its average is the more settled of the two.

## The numbers

| Metric | 66 Days | MemoryU |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (228 ratings)](https://appshunter.io/ios/app/66-days-ai-interview-prep/id6752681422/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/memoryu/id6776697410/reviews)** |
| Number of ratings | **228** | 1 |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 10 days | — |
| Monetization | Freemium | **Free** |
| Size | 110 MB | 41 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Uru Technologies, LLC](https://appshunter.io/developer/1840551197) | [Joseph Barr](https://appshunter.io/developer/6776697412) |

## What reviewers say

### 66 Days

[App page](https://appshunter.io/ios/app/66-days-ai-interview-prep/id6752681422)

Master banking and consulting interviews with daily AI-powered practice. Track your progress on a 66-day journey with personalized feedback on technical, behavioral, and case questions. Improve your resume and gain confidence for top firms.

**Highlights:** AI interview coach with personalized feedback, Daily drills for behavioral, technical, and case questions, 66-day progress heat map, Resume checker, Excel and valuation tools, Analytics dashboard

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 66 Days Prep Pro | $15.99 | per month |
| 66 Days Prep Pro | $49.99 | per year |


### MemoryU

[App page](https://appshunter.io/ios/app/memoryu/id6776697410)

Learn the location of Bible passages by title or theme, not just verse memorization. Build confidence navigating all 66 books through spaced repetition and various study modes. Track progress and master difficult passages with custom decks and a mistake vault.

**Highlights:** Learn passage locations by title/theme, Spaced repetition for retention, Study by book, section, or theme, Customizable study decks, Progress tracking, Mistake Vault for review

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

**In-app purchases:** none


## Frequently asked questions

### Is 66 Days free?

66 Days is free to download, with in-app purchases available.

### Is MemoryU free?

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

### Which has better reviews, 66 Days or MemoryU?

MemoryU is rated higher. 66 Days averages 4.9 out of 5 from 228 ratings, while MemoryU averages 5.0 from 1 ratings.

### Do 66 Days or MemoryU have ads?

Neither 66 Days nor MemoryU shows ads.

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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.*