# AB Quantum vs WikiArms Ammo & Firearm Engine

The clearest difference is rating: AB Quantum at 4.7 against WikiArms Ammo & Firearm Engine's 3.2. AB Quantum also leads on update cadence (fortnightly vs every 5 months) and ratings volume (2.9K vs 121). WikiArms Ammo & Firearm Engine's advantage is in-app purchases (none vs 15) and iOS requirement (12.0 vs 16.0). On price, review sentiment, ads and device support there is nothing between them.

Both are free to download. AB Quantum sells 15 in-app purchases, starting at $2.99 per month. WikiArms Ammo & Firearm Engine asks for nothing beyond the download.

AB Quantum holds the better App Store score, 4.7 against 3.2. That said, the two scores are not equally well evidenced: AB Quantum has 2.9K ratings behind it against 121, 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 42% of WikiArms Ammo & Firearm Engine's.

AB Quantum ships an update fortnightly, WikiArms Ammo & Firearm Engine every 5 months. Both last shipped on October 26, 2026.

## The numbers

| Metric | AB Quantum | WikiArms Ammo & Firearm Engine |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (2.9K ratings)](https://appshunter.io/ios/app/ab-quantum/id785619104/reviews)** | [3.2 (121 ratings)](https://appshunter.io/ios/app/wikiarms-ammo-and-firearm-engine/id880079081/reviews) |
| Number of ratings | **2.9K** | 121 |
| Positive reviews | **45.2% of reviews** | 42.3% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 5 months |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | **#96** | — |
| Size | 466 MB | 19 MB |
| Requires iOS | 16.0 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Applied Ballistics](https://appshunter.io/developer/785619107) | [Apps 47, Inc](https://appshunter.io/developer/1236951007) |

## What reviewers say

### AB Quantum

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

**Currently charting:** #96 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


### WikiArms Ammo & Firearm Engine

[App page](https://appshunter.io/ios/app/wikiarms-ammo-and-firearm-engine/id880079081)

Easily find the best prices on ammunition, reloading supplies, firearms, and parts from over 500 stores. Filter by caliber, case type, and more to locate specific items quickly. This app aggregates deals from various retailers, directing you to sellers for purchase.

**Highlights:** Find ammo and firearm deals, Search 500+ stores, Filter by caliber and case type, Browse firearm parts and reloading components, Direct links to sellers

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Great app for comparing ammo prices
- 👍 Finds great deals
- 👍 Useful for tracking ammo pricing trends
- 👍 Good deals on all ammos
- 👍 Wide range of selection

**What reviewers complain about**

- 🐛 App doesn't work
- 🐛 SSL error prevents connection
- 🐛 Filters don't work
- 🐛 Out of stock products dominate listings
- 🐛 Prices don't match websites

**Reported bugs**

- SSL error has occurred and a secure connection to the server cannot be made
- App crashes when going to search
- Filters don't work (e.g., hide steel)
- Links to ammo open to out-of-stock pages
- App no longer links to web addresses

**Requested features**

- Expand search engine to include different types of firearms
- Add shipping to ammo prices to get the real price
- Filter defensive rounds or hollow points vs ball head rounds
- Expand on the stores listed
- Would be even better if it did reloading components


## Frequently asked questions

### Is AB Quantum free?

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

### Is WikiArms Ammo & Firearm Engine free?

WikiArms Ammo & Firearm Engine is free to download, with no in-app purchases.

### Which has better reviews, AB Quantum or WikiArms Ammo & Firearm Engine?

AB Quantum is rated higher. AB Quantum averages 4.7 out of 5 from 2.9K ratings, while WikiArms Ammo & Firearm Engine averages 3.2 from 121 ratings.

### Do AB Quantum or WikiArms Ammo & Firearm Engine have ads?

Neither AB Quantum nor WikiArms Ammo & Firearm Engine shows ads.

### Which is updated more often, AB Quantum or WikiArms Ammo & Firearm Engine?

AB Quantum ships an update fortnightly, and WikiArms Ammo & Firearm Engine every 5 months. Most recently, AB Quantum was updated on October 26, 2026 and WikiArms Ammo & Firearm Engine on October 26, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*