# BulletDrop+ vs ChamberLog

The clearest difference is update cadence: ChamberLog at every 2 weeks against BulletDrop+'s every 4 months. BulletDrop+'s advantage is iOS requirement (13.0 vs 15.1). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. BulletDrop+ sells 6 one-off in-app purchases and ChamberLog sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

BulletDrop+ ships an update every 4 months, ChamberLog every 2 weeks. The most recent releases landed on July 8, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | BulletDrop+ | ChamberLog |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.9 (76 ratings)](https://appshunter.io/ios/app/bulletdrop-plus/id477251194/reviews)** | — |
| Number of ratings | **76** | — |
| Positive reviews | 51.4% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 2 MB | 46 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Mark Descalzo](https://appshunter.io/developer/413617628) | [SmartCode AS](https://appshunter.io/developer/6777349503) |

## What reviewers say

### BulletDrop+

[App page](https://appshunter.io/ios/app/bulletdrop-plus/id477251194)

Calculate bullet trajectory, energy, and drift with precise inputs. Store custom loads, fetch weather data, and choose output units for accurate shooting predictions. Ideal for handloaders and shooters to understand cartridge performance.

**Highlights:** External ballistics calculation, iCloud support for load data, Store commonly used datasets, Selectable drag function, Selectable output units (inches, MOA, mils), Fetch weather conditions

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Chocolate Bar | $0.99 | one-time |
| Cup of Coffee | $1.99 | one-time |
| Doughnut | $2.99 | one-time |
| Coffee-themed Beverage | $4.99 | one-time |
| Bag of Coffee | $14.99 | one-time |
| Sack of Coffee | $29.99 | one-time |


### ChamberLog

[App page](https://appshunter.io/ios/app/chamberlog/id6777538157)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ChamberLog Pro | $2.99 | per month |
| ChamberLog Pro | $19.99 | per year |


## Frequently asked questions

### Is BulletDrop+ free?

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

### Is ChamberLog free?

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

### Do BulletDrop+ or ChamberLog have ads?

Neither BulletDrop+ nor ChamberLog shows ads.

### Which is updated more often, BulletDrop+ or ChamberLog?

BulletDrop+ ships an update every 4 months, and ChamberLog every 2 weeks. Most recently, BulletDrop+ was updated on July 8, 2026 and ChamberLog on September 19, 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.*