# ArrowMetrics vs Foc Calculator

The clearest difference is in-app purchases: ArrowMetrics at none against Foc Calculator's 1. ArrowMetrics also leads on ads (none vs shown). Foc Calculator's advantage is update cadence (every 6 days vs every 2 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Foc Calculator sells 1 one-off in-app purchase. ArrowMetrics asks for nothing beyond the download.

ArrowMetrics ships an update every 2 months, Foc Calculator every 6 days. The most recent releases landed on October 24, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | ArrowMetrics | Foc Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (7 ratings)](https://appshunter.io/ios/app/arrowmetrics/id6738835543/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 6 days** |
| Monetization | Free | — |
| Size | 54 MB | 31 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [The Arrow Bro LLC](https://appshunter.io/developer/1892657504) | [Tonino Calvagna](https://appshunter.io/developer/6819088741) |

## What reviewers say

### ArrowMetrics

[App page](https://appshunter.io/ios/app/arrowmetrics/id6738835543)

Calculate and compare arrow builds before investing time and money. The free version offers essential calculations for weight, FOC, kinetic energy, momentum, speed, and spine. Future updates will introduce advanced features for subscribed users.

**Highlights:** Arrow build calculation, Front of Center (FOC) evaluation, Kinetic energy and momentum calculation, Arrow speed and spine analysis, Pre-build planning tool

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

**In-app purchases:** none


### Foc Calculator

[App page](https://appshunter.io/ios/app/foc-calculator/id6819088739)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Rimuovi Pubblicità | $3.99 | one-time |


## Frequently asked questions

### Is ArrowMetrics free?

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

### Is Foc Calculator free?

Foc Calculator is free to download, with in-app purchases available.

### Do ArrowMetrics or Foc Calculator have ads?

Foc Calculator shows ads; ArrowMetrics does not.

### Which is updated more often, ArrowMetrics or Foc Calculator?

ArrowMetrics ships an update every 2 months, and Foc Calculator every 6 days. Most recently, ArrowMetrics was updated on October 24, 2026 and Foc Calculator on October 29, 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.*