# OneZero Ballistics Calculator vs Loadem

The clearest difference is in-app purchases: OneZero Ballistics Calculator at none against Loadem's 2. OneZero Ballistics Calculator also leads on update cadence (every 4 days vs every 2 months). Loadem's advantage is iOS requirement (15.6 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. Loadem sells 2 in-app purchases, starting at $4.99 per month. OneZero Ballistics Calculator asks for nothing beyond the download.

OneZero Ballistics Calculator ships an update every 4 days, Loadem every 2 months. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | OneZero Ballistics Calculator | Loadem |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/onezero-ballistics-calculator/id6753189322/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 2 months |
| Monetization | Free | — |
| Size | 9 MB | 59 MB |
| Requires iOS | 26.0 | **15.6** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Reid Thompson](https://appshunter.io/developer/1842948669) | [Elcolynx](https://appshunter.io/developer/1874248573) |

## What reviewers say

### OneZero Ballistics Calculator

[App page](https://appshunter.io/ios/app/onezero-ballistics-calculator/id6753189322)

This app calculates ballistic trajectories for .300 Blackout ammunition, comparing supersonic and subsonic loads with real-time environmental corrections. It provides detailed dope tables, custom load presets, and an interactive trajectory chart for precise shooting.

**Highlights:** Compare supersonic and subsonic loads, Real-time environmental corrections, Interactive trajectory chart, Detailed dope table, Factory ammo library, Custom load presets, Exportable dope card PDF

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support, iPhone Duo support

**In-app purchases:** none


### Loadem

[App page](https://appshunter.io/ios/app/loadem/id6758661743)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $4.99 | per month |
| Yearly Premium | $29.99 | per year |


## Frequently asked questions

### Is OneZero Ballistics Calculator free?

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

### Is Loadem free?

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

### Do OneZero Ballistics Calculator or Loadem have ads?

Neither OneZero Ballistics Calculator nor Loadem shows ads.

### Which is updated more often, OneZero Ballistics Calculator or Loadem?

OneZero Ballistics Calculator ships an update every 4 days, and Loadem every 2 months. Most recently, OneZero Ballistics Calculator was updated on October 28, 2026 and Loadem 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.*