# YK1 vs CELPIP Prep

The clearest difference is in-app purchases: YK1 at none against CELPIP Prep's 3. YK1 also leads on iOS requirement (12.2 vs 15.1). CELPIP Prep's advantage is update cadence (weekly vs every 7 months). On price, ads and device support there is nothing between them.

Both are free to download. CELPIP Prep sells 3 in-app purchases, starting at $6.99 per 7 days. YK1 asks for nothing beyond the download.

YK1 ships an update every 7 months, CELPIP Prep weekly. The most recent releases landed on September 29, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | YK1 | CELPIP Prep |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (29 ratings)](https://appshunter.io/ios/app/celpip-prep-practice-test/id6747511818/reviews)** |
| Number of ratings | — | **29** |
| Positive reviews | — | 10.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Weekly** |
| Monetization | — | Free with in-app purchases |
| Size | 70 MB | 48 MB |
| Requires iOS | **12.2** | 15.1 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Concept Interactive Inc.](https://appshunter.io/developer/1437684225) | [faisal khalid](https://appshunter.io/developer/671706631) |

## What reviewers say

### YK1

[App page](https://appshunter.io/ios/app/yk1/id1599992893)

**Features:** macOS Compatibility

**In-app purchases:** none


### CELPIP Prep

[App page](https://appshunter.io/ios/app/celpip-prep-practice-test/id6747511818)

Prepare for the CELPIP English proficiency test with realistic simulations and instant AI grading. Improve your Listening, Reading, Writing, and Speaking skills for Canadian immigration or professional certification.

**Highlights:** Realistic test simulator, Instant AI grading, Dynamic practice mode, Progress tracking, Targeted skill improvement, Supports CELPIP-General and CELPIP-LS

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly - Celpip | $6.99 | per 7 days |
| Yearly - Celpip | $29.99 | per year |
| Lifetime - Celpip Prep | $14.99 | one-time |


## Frequently asked questions

### Is YK1 free?

YK1 is free to download, with no in-app purchases.

### Is CELPIP Prep free?

CELPIP Prep is free to download, with in-app purchases available.

### Do YK1 or CELPIP Prep have ads?

Neither YK1 nor CELPIP Prep shows ads.

### Which is updated more often, YK1 or CELPIP Prep?

YK1 ships an update every 7 months, and CELPIP Prep weekly. Most recently, YK1 was updated on September 29, 2026 and CELPIP Prep on October 1, 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.*