# AB Quantum vs AB Synapse

The clearest difference is rating: AB Quantum at 4.7 against AB Synapse's 2.0. AB Quantum also leads on review sentiment (45% vs 13%) and ratings volume (2.7K vs 23). AB Synapse's advantage is in-app purchases (none vs 15) and iOS requirement (13.0 vs 16.0). On price, 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. AB Synapse asks for nothing beyond the download.

AB Quantum holds the better App Store score, 4.7 against 2.0. That said, the two scores are not equally well evidenced: AB Quantum has 2.7K ratings behind it against 23, 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 13% of AB Synapse's.

AB Quantum ships an update fortnightly, AB Synapse every 2 months. The most recent releases landed on September 23, 2026 and June 11, 2026 respectively.

## The numbers

| Metric | AB Quantum | AB Synapse |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (2.7K ratings)](https://appshunter.io/ios/app/ab-quantum/id785619104/reviews)** | [2.0 (23 ratings)](https://appshunter.io/ios/app/ab-synapse-garmin/id1545246660/reviews) |
| Number of ratings | **2.7K** | 23 |
| Positive reviews | **44.7% of reviews** | 13.3% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 2 months |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | **#119** | — |
| Size | 299 MB | 42 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Applied Ballistics](https://appshunter.io/developer/785619107) | [nVisti](https://appshunter.io/developer/1058574940) |

## What reviewers say

### AB Quantum

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

**Currently charting:** #119 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


### AB Synapse

[App page](https://appshunter.io/ios/app/ab-synapse-garmin/id1545246660)

This application is no longer supported and users should immediately switch to Applied Ballistics Quantum™. It was designed for sports enthusiasts.

**Highlights:** No longer supported, Recommended to switch to Applied Ballistics Quantum™, Designed for sports enthusiasts

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is AB Quantum free?

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

### Is AB Synapse free?

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

### Which has better reviews, AB Quantum or AB Synapse?

AB Quantum is rated higher. AB Quantum averages 4.7 out of 5 from 2.7K ratings, while AB Synapse averages 2.0 from 23 ratings.

### Do AB Quantum or AB Synapse have ads?

Neither AB Quantum nor AB Synapse shows ads.

### Which is updated more often, AB Quantum or AB Synapse?

AB Quantum ships an update fortnightly, and AB Synapse every 2 months. Most recently, AB Quantum was updated on September 23, 2026 and AB Synapse on June 11, 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.*