TRASOL vs Reactor (Official)
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TRASOL
This advanced ballistic calculator provides real-time environmental data and trajectory predictions for precision shooting. It features a heads-up display for automatic target solutions, moving target tracking, and shot logging capabilities.
- Real-time sensor integration
- Heads-up display (HUD)
- Moving target tracking
- Unlimited equipment profiles
- Cloud backup/sync
- Long-range accuracy up to 5000 yards
- Scope turret calibration
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Stop adjusting – start hitting. Utilize the most effective ballistic software ever invented. Simple, intuitive and now integrated with smart sensors. With the tap of a button you can calibrate density altitude, Coriolis, cant and slope in real-time. Fully integrated with our new heads-up display, TRASOL enables you to capture video and snapshots, as well as track moving targets. TRASOL was developed for precision shooters who desire first round hit accuracy out to 5000 yards. FEATURES • Interfacing HUD • Automatic device sensor input • Unlimited equipment profiles • Cloud backup/sync for equipment data • Range up to 5000 yards (4572 meters) • Highly accurate trajectory prediction • Moving target speed tracking • Scope turret calibration • Cold bore adjustment • Light/dark color themes • Built-in tutorials HEADS-UP DISPLAY There is genius in simplicity. TRASOL is the first ballistic application to incorporate Heads-Up Display technology. By using your iPhone’s or iPad’s built-in camera and onboard sensors, TRASOL allows users to point their device at their target and automatically generate absolute accuracy solutions. The HUD environment has highly intuitive drag-and-drop tools for quick input of range and wind, and the device’s sensors do the rest. The HUD also allows tracking of moving targets to provide very accurate lead solutions. Photo/video capturing capability allows you to log your shots easily and share them with your friends. REFINED ACCURACY Utilizing proprietary algorithms, TRASOL is the most accurate ballistics calculator on the planet. No more need to alter manufacturer bullet data to get your hits; we developed new algorithms using Doppler radar data to create the most predictive flight path possible. In live-fire testing of TRASOL’s predictions the following results were documented (.338LM ammunition, using manufacturer's published data): • Within 0.1 MRAD up to 1400 yards • Within 0.5 meters up to 1700 yards • Within 1.1 meters at 2200 yards
Reactor (Official)
This app enhances shooting performance by automating data logging and providing insights into shots, sets, and environmental conditions. It offers real-time metrics and maintenance reminders for rifle components, similar to a fitness tracker for marksmanship.
- Automated data logging
- Shooting performance insights
- Rifle component maintenance alerts
- Real-time heads-up display
- Weather information integration
- Shot and set summaries
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Reactor's mobile app pairs with the Reactor Fusion Module to automate your data books and provide valuable insights into your shooting. It brings similar benefits as a fitness tracking app to the marksmanship world, allowing you to spend more time focused on your shooting and less time writing with pen and paper. The app shows summaries of your shots, sets, weather information, and displays metrics for each rifle component for knowing when it's time to perform maintenance on your rifle. The real-time heads-up display helps you learn more about how you cant your rifle when you shoot, how barrel temperature affects your shots, and shows quick-access weather information. All of this information is automatically logged to your account when shots take place. Reactor NEVER logs this information without your Fusion Module being on and paired, and we have completely transparent business practices to ensure your privacy and rights as a gun owner are protected. If you have questions, please contact us at https://reactorusa.com/contact
Screenshots
Verdict
The clearest difference is review sentiment: Reactor (Official) at 100% against TRASOL's 52%. Reactor (Official) also leads on rating (5.0 vs 3.9) and in-app purchases (none vs 1). TRASOL's advantage is ratings volume (41 vs 2). On price, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. TRASOL sells 1 one-off in-app purchase. Reactor (Official) asks for nothing beyond the download.
Reactor (Official) holds the better App Store score, 5.0 against 3.9. That said, the two scores are not equally well evidenced: TRASOL has 41 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 52% of TRASOL's written reviews are positive against 100% of Reactor (Official)'s.
TRASOL ships an update every 10 months, Reactor (Official) every 2 weeks. The most recent releases landed on October 29, 2026 and October 21, 2026 respectively.
| Parameter | TRASOL | Reactor (Official) |
|---|---|---|
| Price | Free | Free |
| Rating | 3.9 (41 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 52.4% of reviews | 100.0% of reviews — better |
| Number of ratings | 41 — better | 2 |
| Update frequency | Every 10 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 12.0 | 10.0 — better |
| Further details — not scored | ||
| Size | 11 MB | 66 MB |
| Age rating | 17+ | 12+ |
| Developer | Desert Tech | Reactor, LLC |
Customer experience
TRASOL
Reactor (Official)
Bugs and requests
TRASOL
Reported bugs
23 issues- Elevation off maps is incorrect
- Pressure (Inhg) does not go below 25.00
- App crashes when getting environmental info
- Cannot count results in Europe
- Purchase restore was broken
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- Old purchase wants additional payment
- Cannot restore purchase
- Cannot change data or enter distances
- Keyboard or numbers not pulling up
- Needs iPhone X update
- Controls not intuitive
- Doesn't work with iOS 11.2.1
- App won't launch
- Crashes when trying to use certain functions
- Cannot save app settings
- App crashes immediately
- Continually crashed on iPhone 6s
- Sync not working
- Sync could not restore old backup
- App crashes when entering twist rate
- App crashes when trying to sync
- App shuts down for no reason
- Cannot delete rifles
Requested features
5 requests- Add powder temperature capability
- Ability to print ballistics table
- Add effect of powder temperature on muzzle velocity
- Ability to import data from Kestrel
- Dark mode option
Reactor (Official)
Not enough reviews yet to summarise bugs or requests.
In-app purchases
TRASOL
- Full TRASOL Upgrade$39.99
Reactor (Official)
No in-app purchases
Questions
Is TRASOL free?
Is Reactor (Official) free?
Which has better reviews, TRASOL or Reactor (Official)?
Do TRASOL or Reactor (Official) have ads?
Which is updated more often, TRASOL or Reactor (Official)?
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