# AB Quantum vs Sierra Reloading Manual v6.0

The clearest difference is rating: AB Quantum at 4.7 against Sierra Reloading Manual v6.0's 3.0. AB Quantum also leads on ratings volume (2.9K vs 80) and review sentiment (45% vs 28%). Sierra Reloading Manual v6.0's advantage is iOS requirement (8.1 vs 16.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. AB Quantum sells 15 in-app purchases, starting at $2.99 per month and Sierra Reloading Manual v6.0 sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

AB Quantum holds the better App Store score, 4.7 against 3.0. That said, the two scores are not equally well evidenced: AB Quantum has 2.9K ratings behind it against 80, so its average is the more settled of the two. Written reviews point the same way: 45% of AB Quantum's written reviews are positive against 28% of Sierra Reloading Manual v6.0's.

Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on November 1, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | AB Quantum | Sierra Reloading Manual v6.0 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (2.9K ratings)](https://appshunter.io/ios/app/ab-quantum/id785619104/reviews)** | [3.0 (80 ratings)](https://appshunter.io/ios/app/sierra-reloading-manual-v60/id1450071966/reviews) |
| Number of ratings | **2.9K** | 80 |
| Positive reviews | **45.0% of reviews** | 28.1% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | Fortnightly |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | **#107** | — |
| Size | 466 MB | 58 MB |
| Requires iOS | 16.0 | **8.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Applied Ballistics](https://appshunter.io/developer/785619107) | [Sierra Bullets LLC](https://appshunter.io/developer/1450057822) |

## What reviewers say

### AB Quantum

[App page](https://appshunter.io/ios/app/ab-quantum/id785619104)

**Currently charting:** #107 Top Grossing · Sports (US App Store)

This app provides a comprehensive ballistics solver and profile management tool for long-range shooting. It features a new user interface designed for single-handed use, enabling quick solutions and seamless integration with Bluetooth-enabled devices. Users can sync gun profiles, create customizable range cards, and access an updated reticle library.

**Highlights:** Ballistics solver, Profile management, Bluetooth device integration, Customizable range/target cards, Reticle library, Ballistic truing, Chronograph integration

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

**In-app purchases (15)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Elite Monthly | $2.99 | per month |
| Professional Monthly | $3.99 | per month |
| Elite Annual | $19.99 | per year |
| Professional Annual | $29.99 | per year |
| Custom Drag Model (CDM) for Berger 0.264cal 140gr Target Hybrid | $1.99 | one-time |
| Custom Drag Model (CDM) for Sierra 0.308cal 175gr MatchKing | $1.99 | one-time |
| Custom Drag Model (CDM) for Hornady 0.264cal 140gr ELD Match | $1.99 | one-time |
| Custom Drag Model (CDM) for Hornady 0.264cal 143gr ELD X | $1.99 | one-time |
| Custom Drag Model (CDM) for Hornady 0.264cal 147gr ELD Match | $1.99 | one-time |
| AB Caliber 0.224 CDMs | $9.99 | one-time |
| AB Caliber 0.243 CDMs | $9.99 | one-time |
| AB Caliber 0.264 CDMs | $9.99 | one-time |
| AB Caliber 0.284 CDMs | $9.99 | one-time |
| AB Caliber 0.308 CDMs | $9.99 | one-time |
| AB Caliber 0.338 CDMs | $9.99 | one-time |

**What reviewers like**

- 🚀 Best ballistic app
- 👍 Accurate ballistic calculations
- 👍 Comprehensive features
- 👍 Great support
- 👍 Easy to use once set up

**What reviewers complain about**

- 🐛 Buggy after updates
- 🐛 Connectivity issues with Kestrel
- 🐛 Glitches with user interface
- 👎 Difficult to navigate
- 👎 Outdated interface

**Reported bugs**

- Bullet BC not retaining custom values
- Profiles disappearing after updates
- Atmospheric data not syncing correctly
- Ballistics calculations not matching real-world data

**Requested features**

- Apple Watch app
- More reticle options
- Metric unit support
- Backup and restore functionality
- Improved range card and target card features


### Sierra Reloading Manual v6.0

[App page](https://appshunter.io/ios/app/sierra-reloading-manual-v60/id1450071966)

Access comprehensive reloading data for rifle and handgun cartridges. Features include powder weight calculators, detailed bullet information, cartridge history, and ballistic data. Offers both free sample data and a subscription for full access to extensive reloading information.

**Highlights:** Reloading powder weight calculator, Cartridge history, Bullet details, Exterior ballistic data, Dark/light mode viewing, Reloading FAQs

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Annual Subscription | $4.99 | one-time |

**What reviewers like**

- 👍 Great information source
- 👍 Useful for reloading
- 👍 Convenient mobile format
- 👍 Good for standard and oddball calibers
- 👍 Free load data (initially)

**What reviewers complain about**

- 🐛 Outdated data
- 🐛 Missing projectiles/cartridges
- 🐛 Dangerous/incorrect load data
- 🐛 App resets on screen rotate/switch
- 🐛 Cannot purchase subscription

**Reported bugs**

- Cannot purchase subscription
- Cannot sign up for account online
- Subscription restore errors
- App crashes on loading screen
- App resets to beginning between apps/screen rotation

**Requested features**

- Update app regularly
- Add missing bullets and cartridges
- Update load data
- Allow phone rotation without reset
- Remember user's position in the app


## Frequently asked questions

### Is AB Quantum free?

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

### Is Sierra Reloading Manual v6.0 free?

Sierra Reloading Manual v6.0 is free to download, with in-app purchases available.

### Which has better reviews, AB Quantum or Sierra Reloading Manual v6.0?

AB Quantum is rated higher. AB Quantum averages 4.7 out of 5 from 2.9K ratings, while Sierra Reloading Manual v6.0 averages 3.0 from 80 ratings.

### Do AB Quantum or Sierra Reloading Manual v6.0 have ads?

Neither AB Quantum nor Sierra Reloading Manual v6.0 shows ads.

### Which is updated more often, AB Quantum or Sierra Reloading Manual v6.0?

AB Quantum ships an update fortnightly, and Sierra Reloading Manual v6.0 fortnightly. Most recently, AB Quantum was updated on November 1, 2026 and Sierra Reloading Manual v6.0 on October 24, 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.*