# Bathory Calculator vs Twindo

The clearest difference is ads: Twindo at none against Bathory Calculator's shown. Bathory Calculator's advantage is iOS requirement (15.6 vs 18.0). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Bathory Calculator ships an update every 2 weeks, Twindo weekly. The most recent releases landed on October 4, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Bathory Calculator | Twindo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (10 ratings)](https://appshunter.io/ios/app/bathory-calculator/id1602831616/reviews)** | — |
| Number of ratings | **10** | — |
| Positive reviews | 85.7% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 2 weeks | **Weekly** |
| Monetization | Ad-supported | — |
| Size | 29 MB | 111 MB |
| Requires iOS | **15.6** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Grzegorz Antoniak](https://appshunter.io/developer/1602831618) | [Twindo BV](https://appshunter.io/developer/1689880082) |

## What reviewers say

### Bathory Calculator

[App page](https://appshunter.io/ios/app/bathory-calculator/id1602831616)

This utility helps players invest in or reserve spots in other players' Great Buildings within the game Forge of Empires. It offers various calculation tools to assist with in-game investments and strategic planning.

**Highlights:** Great Building investment calculator, Reserve spots in Great Buildings, In-game investment tools, Strategic planning assistance, Multiple calculation options

**Features:** macOS Compatibility

**In-app purchases:** none


### Twindo

[App page](https://appshunter.io/ios/app/twindo/id6449618251)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Bathory Calculator free?

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

### Is Twindo free?

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

### Do Bathory Calculator or Twindo have ads?

Bathory Calculator shows ads; Twindo does not.

### Which is updated more often, Bathory Calculator or Twindo?

Bathory Calculator ships an update every 2 weeks, and Twindo weekly. Most recently, Bathory Calculator was updated on October 4, 2026 and Twindo on October 8, 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.*