# AB Quantum vs ShootOnTime

The clearest difference is review sentiment: ShootOnTime at 90% against AB Quantum's 45%. ShootOnTime also leads on in-app purchases (none vs 15) and rating (4.9 vs 4.7). AB Quantum's advantage is chart position (#108 vs unranked). On price, ratings volume, 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. ShootOnTime asks for nothing beyond the download.

ShootOnTime holds the better App Store score, 4.9 against 4.7. Both are backed by a comparable volume of ratings — 2.7K and 1.1K respectively. Written reviews point the same way: 45% of AB Quantum's written reviews are positive against 90% of ShootOnTime's.

AB Quantum ships an update fortnightly, ShootOnTime weekly. Both last shipped on October 15, 2026.

## The numbers

| Metric | AB Quantum | ShootOnTime |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (2.7K ratings)](https://appshunter.io/ios/app/ab-quantum/id785619104/reviews) | **[4.9 (1.1K ratings)](https://appshunter.io/ios/app/shootontime-par-timer/id6451364120/reviews)** |
| Number of ratings | **2.7K** | 1.1K |
| Positive reviews | 44.9% of reviews | **90.5% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | **Weekly** |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | **#108** | — |
| Size | 299 MB | 9 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Applied Ballistics](https://appshunter.io/developer/785619107) | [LiberApps](https://appshunter.io/developer/1695213700) |

## What reviewers say

### AB Quantum

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

**Currently charting:** #108 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


### ShootOnTime

[App page](https://appshunter.io/ios/app/shootontime-par-timer/id6451364120)

This app provides a simple and efficient par timer for shooting practice, suitable for both dry firing at home and live fire at the range. It focuses on tracking par times to help users improve their performance without collecting any user data.

**Highlights:** Par time tracking, Dry fire training, Live fire practice, Performance enhancement, Simple interface, Privacy focused

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Great for dry fire practice
- 👍 Simple and easy to use
- 👍 Intuitive design
- 👍 Customizable par times
- 👍 Useful for indoor ranges

**What reviewers complain about**

- 🐛 Difficulty hearing the timer beep
- 🐛 Unable to track or display shot times
- 🐛 Inability to rename or delete presets
- 🐛 Timer stops when screen locks

**Reported bugs**

- Unable to enter decimal values for par times
- Forced updates at inconvenient times

**Requested features**

- Ability to measure split times
- Option to set more than 5 par times
- Ability to adjust tone volume or use custom sounds
- Ability to export/import settings between devices
- Option to count up instead of count down


## Frequently asked questions

### Is AB Quantum free?

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

### Is ShootOnTime free?

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

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

ShootOnTime is rated higher. AB Quantum averages 4.7 out of 5 from 2.7K ratings, while ShootOnTime averages 4.9 from 1.1K ratings.

### Do AB Quantum or ShootOnTime have ads?

Neither AB Quantum nor ShootOnTime shows ads.

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

AB Quantum ships an update fortnightly, and ShootOnTime weekly. Most recently, AB Quantum was updated on October 15, 2026 and ShootOnTime on October 15, 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.*