# CSM LearnStrike vs Bridge Calc

The clearest difference is price: CSM LearnStrike at Free against Bridge Calc's $24.99. CSM LearnStrike also leads on update cadence (every 3 weeks vs every 3 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

CSM LearnStrike is free to download; Bridge Calc costs $24.99 up front. Neither carries in-app purchases, so what you see is what you pay.

CSM LearnStrike ships an update every 3 weeks, Bridge Calc every 3 months. Both last shipped on October 25, 2026.

## The numbers

| Metric | CSM LearnStrike | Bridge Calc |
| --- | --- | --- |
| Price | **Free** | $24.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 3 months |
| Size | 301 MB | 37 MB |
| Requires iOS | 14.0 | 14.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [4Growth.com](https://appshunter.io/developer/1728434002) | [Stanislav Soroka](https://appshunter.io/developer/1701402639) |

## What reviewers say

### CSM LearnStrike

[App page](https://appshunter.io/ios/app/csm-learnstrike/id6450264607)

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

**In-app purchases:** none


### Bridge Calc

[App page](https://appshunter.io/ios/app/bridge-calc-draft-and-ballast/id6745449412)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CSM LearnStrike free?

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

### Is Bridge Calc free?

Bridge Calc costs $24.99, with no in-app purchases.

### Do CSM LearnStrike or Bridge Calc have ads?

Neither CSM LearnStrike nor Bridge Calc shows ads.

### Which is updated more often, CSM LearnStrike or Bridge Calc?

CSM LearnStrike ships an update every 3 weeks, and Bridge Calc every 3 months. Most recently, CSM LearnStrike was updated on October 25, 2026 and Bridge Calc on October 25, 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.*