# BTFields Premium vs Imperial Eagle

The clearest difference is price: Imperial Eagle at Free against BTFields Premium's $0.99. Imperial Eagle also leads on update cadence (weekly vs every 4 months). BTFields Premium's advantage is in-app purchases (none vs 1) and chart position (#195 vs unranked). On review sentiment, ads, device support and iOS requirement there is nothing between them.

Imperial Eagle is free to download; BTFields Premium costs $0.99 up front. Imperial Eagle sells 1 one-off in-app purchase. BTFields Premium asks for nothing beyond the download.

BTFields Premium ships an update every 4 months, Imperial Eagle weekly. The most recent releases landed on October 9, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | BTFields Premium | Imperial Eagle |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/imperial-eagle/id6787205800/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Weekly** |
| Monetization | Paid | **Free with in-app purchases** |
| Best chart rank | **#195** | — |
| Size | 76 MB | 113 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Jianfeng Wu](https://appshunter.io/developer/1435210283) | [Lingsen Meng](https://appshunter.io/developer/6787205802) |

## What reviewers say

### BTFields Premium

[App page](https://appshunter.io/ios/app/btfields-premium/id6751348606)

**Currently charting:** #195 Top Paid · Board (US App Store)

Unlock the full experience of a strategic game with no advertisements or user tracking. This premium version offers complete access to all game features and content.

**Highlights:** Full access to all content, No advertisements, No user tracking, Premium experience

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

**In-app purchases:** none


### Imperial Eagle

[App page](https://appshunter.io/ios/app/imperial-eagle/id6787205800)

Experience historical battles from 1793-1815 in this turn-based hex-grid wargame. Command famous marshals, manage supply lines and morale, and conquer territories. Offers campaign, conquest, and elite trial modes for a deep tactical challenge.

**Highlights:** Turn-based hex-grid tactics, Historical campaign mode, Conquest sandbox strategy, Elite Trials scenarios, Marshal command with unique skills, Supply lines and morale mechanics, War Academy research

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Campaign Unlock | $2.99 | one-time |


## Frequently asked questions

### Is BTFields Premium free?

BTFields Premium costs $0.99, with no in-app purchases.

### Is Imperial Eagle free?

Imperial Eagle is free to download, with in-app purchases available.

### Do BTFields Premium or Imperial Eagle have ads?

Neither BTFields Premium nor Imperial Eagle shows ads.

### Which is updated more often, BTFields Premium or Imperial Eagle?

BTFields Premium ships an update every 4 months, and Imperial Eagle weekly. Most recently, BTFields Premium was updated on October 9, 2026 and Imperial Eagle on October 4, 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.*