# BulletCalc3 vs FlightDose

The clearest difference is price: FlightDose at Free against BulletCalc3's $0.99. FlightDose also leads on rating (5.0 vs 3.0) and update cadence (every 4 days vs every 2 months). BulletCalc3's advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support there is nothing between them.

FlightDose is free to download; BulletCalc3 costs $0.99 up front. FlightDose sells 1 one-off in-app purchase. BulletCalc3 asks for nothing beyond the download.

FlightDose holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 2 and 7 respectively.

BulletCalc3 ships an update every 2 months, FlightDose every 4 days. The most recent releases landed on October 13, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | BulletCalc3 | FlightDose |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [3.0 (2 ratings)](https://appshunter.io/ios/app/bulletcalc3/id1660120327/reviews) | **[5.0 (7 ratings)](https://appshunter.io/ios/app/flightdose/id6759472369/reviews)** |
| Number of ratings | 2 | **7** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 4 days** |
| Monetization | Paid | **Free** |
| Size | 6 MB | 14 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 12+ |
| Developer | [Jack McCormack](https://appshunter.io/developer/1658121467) | [Apex Technology Group, Inc](https://appshunter.io/developer/1878815891) |

## What reviewers say

### BulletCalc3

[App page](https://appshunter.io/ios/app/bulletcalc3/id1660120327)

Calculate ballistic trajectories for firearms with detailed charts and data. Offers metric and imperial units, automatic calculation of bullet drop, energy, and velocity at various ranges. Includes features for adjusting gun sight zero and measuring slant angles.

**Highlights:** Metric/Imperial unit support, Dynamic ballistic charts, Automatic FPS/Energy/Drop calculation, Gun sight zero adjustment, Slant angle measurement, Web search for bullet specs, Export distance data

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

**In-app purchases:** none


### FlightDose

[App page](https://appshunter.io/ios/app/flightdose/id6759472369)

Estimates cosmic radiation exposure during flights using scientific aviation modeling. It calculates dose based on route, altitude, latitude, and solar conditions, presenting clear, data-driven insights into an invisible environmental factor.

**Highlights:** Estimates in-flight radiation dose, CARI-7 based modeling concepts, Accounts for altitude and position, Considers Earth's magnetic field, Supports route and flight estimation, Clear results presentation

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remve Ads | $2.99 | one-time |


## Frequently asked questions

### Is BulletCalc3 free?

BulletCalc3 costs $0.99, with no in-app purchases.

### Is FlightDose free?

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

### Which has better reviews, BulletCalc3 or FlightDose?

FlightDose is rated higher. BulletCalc3 averages 3.0 out of 5 from 2 ratings, while FlightDose averages 5.0 from 7 ratings.

### Do BulletCalc3 or FlightDose have ads?

FlightDose shows ads; BulletCalc3 does not.

### Which is updated more often, BulletCalc3 or FlightDose?

BulletCalc3 ships an update every 2 months, and FlightDose every 4 days. Most recently, BulletCalc3 was updated on October 13, 2026 and FlightDose on October 7, 2026.

---

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