# Chess Opening Lab (1400 vs Chess Prep Pro Openings

The clearest difference is ads: Chess Opening Lab (1400 at none against Chess Prep Pro Openings's shown. Chess Opening Lab (1400 also leads on ratings volume (593 vs 22) and rating (4.7 vs 4.5). Chess Prep Pro Openings's advantage is update cadence (fortnightly vs every 3 months) and review sentiment (75% vs 66%). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. Chess Opening Lab (1400 sells 1 one-off in-app purchase and Chess Prep Pro Openings sells 3 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

Chess Opening Lab (1400 holds the better App Store score, 4.7 against 4.5. That said, the two scores are not equally well evidenced: Chess Opening Lab (1400 has 593 ratings behind it against 22, so its average is the more settled of the two. Written reviews complicate that: 66% of Chess Opening Lab (1400's written reviews are positive against 75% of Chess Prep Pro Openings's, so the app with the better star average is not the one people write more warmly about.

Chess Opening Lab (1400 ships an update every 3 months, Chess Prep Pro Openings fortnightly. The most recent releases landed on November 6, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | Chess Opening Lab (1400 | Chess Prep Pro Openings |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (593 ratings)](https://appshunter.io/ios/app/chess-opening-lab-1400-2000/id1129879784/reviews)** | [4.5 (22 ratings)](https://appshunter.io/ios/app/chess-prep-pro-openings/id1606629475/reviews) |
| Number of ratings | **593** | 22 |
| Positive reviews | 65.5% of reviews | **75.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Fortnightly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 45 MB | 214 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Chess King](https://appshunter.io/developer/1096660597) | [Tomasz Bogun](https://appshunter.io/developer/1502902123) |

## What reviewers say

### Chess Opening Lab (1400

[App page](https://appshunter.io/ios/app/chess-opening-lab-1400-2000/id1129879784)

This app offers a comprehensive chess opening manual with theoretical reviews and instructive games from grandmasters. It features detailed classifications, evaluations, and characteristics of key moves, along with interactive lessons and over 350 training exercises.

**Highlights:** Theoretical review of all chess openings, Instructive games with detailed annotations, Interactive theoretical lessons, 350+ training exercises, Evaluations and characteristics of key moves, History and current status of variations

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full course | $12.99 | one-time |

**What reviewers like**

- 👍 Very convenient app
- 👍 Ideal for practicing openings
- 👍 Great for chess studies
- 👍 Fantastic teaching tool
- 👍 Excellent teacher

**What reviewers complain about**

- 😞 Barely any information
- 😞 Difficult and confusing to work
- 😞 No content
- 😞 Useless
- 😞 Scam

**Reported bugs**

- Recorded moves not highlighted or disappear
- White spot instead of recorded move
- Have to buy full course multiple times
- App forgets purchase
- Animation speed doesn't decrease

**Requested features**

- More exercises for different openings
- More examples of opening systems
- Give 20 or more examples of different openings
- Explanations in French
- Reference books


### Chess Prep Pro Openings

[App page](https://appshunter.io/ios/app/chess-prep-pro-openings/id1606629475)

Master chess openings by building custom repertoires and training your memory. Analyze opponent moves, discover blind spots, and utilize an advanced engine for in-depth preparation. Expand your knowledge with downloadable repertoires and import/export PGNs.

**Highlights:** Custom chess opening repertoires, Repertoire training and memory sharpening, Blind spot finder against player games, Chess openings player database, Advanced StockFish engine analysis, Downloadable and importable repertoires

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly premium subscription | $3.99 | per month |
| Yearly premium | $24.99 | per year |
| Lifetime Premium | $59.99 | one-time |


## Frequently asked questions

### Is Chess Opening Lab (1400 free?

Chess Opening Lab (1400 is free to download, with in-app purchases available.

### Is Chess Prep Pro Openings free?

Chess Prep Pro Openings is free to download, with in-app purchases available.

### Which has better reviews, Chess Opening Lab (1400 or Chess Prep Pro Openings?

Chess Opening Lab (1400 is rated higher. Chess Opening Lab (1400 averages 4.7 out of 5 from 593 ratings, while Chess Prep Pro Openings averages 4.5 from 22 ratings.

### Do Chess Opening Lab (1400 or Chess Prep Pro Openings have ads?

Chess Prep Pro Openings shows ads; Chess Opening Lab (1400 does not.

### Which is updated more often, Chess Opening Lab (1400 or Chess Prep Pro Openings?

Chess Opening Lab (1400 ships an update every 3 months, and Chess Prep Pro Openings fortnightly. Most recently, Chess Opening Lab (1400 was updated on November 6, 2026 and Chess Prep Pro Openings on November 7, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*