TrueData is made and published by Sierra Bullets. AppBrain is an independent app data site and isn't affiliated with Sierra Bullets. The app name, icon, screenshots and description belong to Sierra Bullets and are shown as published on Google Play.

Summary

TrueData is a comprehensive rifle ballistics calculator that combines Sierra and Barnes bullet libraries with Doppler data for precise trajectory predictions. It offers live windage adjustments, multiple weather inputs, MRAD/MOA calculations, and flexible export options to CSV, TSV, or PDF. With 5,000+ total downloads and a 3.78 rating from 11 users, it stands out in sports-focused ballistic tools.

Pros & Cons

Integrates comprehensive Sierra & Barnes bullet libraries
Includes Doppler data libraries for improved accuracy
MRAD/MOA support with both metric and imperial units
Export trajectories and settings to CSV/TSV/PDF and cloud services

Extensive permission set (location, Bluetooth, advertising IDs, etc.) may raise privacy concerns for some users

About TrueData

TrueData is a sports app developed by Sierra Bullets.

Install Statistics

TrueData has been installed 5.7 thousand times. In the last 30 days, the app was installed 590 times.

User Ratings

TrueData is rated 3.78 out of 5 stars. The rating is based on 11 ratings.

App Information

TrueData is freely available from Google Play. The app size is 25.35 MB. The latest version available is 3.0.0. The last update was on October 9, 2026.

Technical Requirements

The app has a content rating of High Maturity. The app has been available on Google Play since December 2025.

Description by Sierra Bullets (from Google Play)

Set up your rifles and bullets, refresh the weather and drag out your distance.
Turret clicks are calculated on the fly and displayed instantly.

Includes the full Sierra and Barnes bullet libraries and Doppler Data, plus:
• Muzzle Velocity truing feature
• BC truing feature
• Barnes Doppler Library
• Sierra Doppler Library
• Multiple weather input options for any scenario or equipment
• Elevation offset option for rifle zero
• Intuitive, modern interface
• Quickly dial in the wind and target distance
• Calculates multiple click adjustments in MRAD or MOA
• Supports combinations of metric and imperial
• Supports ICAO and US Metro units
• Supports G7, G1 and many other drag models
• Supports either single, or up to 6 BC entries
• Create and save your own rifles and bullets
• Quickly view and duplicate bullets and rifles
• Calculates spin drift
• Retrieves weather at your location
• Allows overriding temperature, humidity, air pressure
• Automatically detects shooting angle (up/dn)
• Generates trajectory tables showing zero and transonic zone
• Ability to export trajectories as CSV/TSV/Pipe and PDF Report
• Displays equivalent 1 MOA & MRAD when choosing distance
• Displays equivalent 1 click of current scope at distance
• Haptic feedback for positive button presses
• Export your settings, rifles and bullets to Google Drive, DropBox, Email...
• Import your settings, rifles and bullets to make switching devices easier
• Add multiple distances to view a convenient Target Card
• Connect your Bluetooth weather device for real-time changes (currently supports Skywatch and WeatherFlow)
• Account for weather conditions while zeroing (Zero Weather)
• Allow for variations in powder temperature with a simple interface
• Allow for chronograph distance in bullet velocity
• Fine tune your exact Wind Direction in a popup
• Convenient Training Timer
• Quick compass option in the Wind card
• Virtual Range Finder estimates your target distance via GPS
• Select basic or detailed form entry options in settings
• Adjust your rifle’s Scope Scale Factor
• Round trajectories to your scope’s clicks

Recent changes:
Added support for Calypso Ultrasonic MINI wind reader.
Features include live wind readings and live windage adjustments (MOA/MIL).

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Screenshots

Screenshots by Sierra Bullets, from the Google Play listing

Official page on Google Play Also on the App Store

Also available on the App Store

TrueData

Sierra Bullets LLC

5.0

Free

11 ratings

Alternatives to TrueData

Google Play Rating history and histogram

Installs over time

TrueData has been installed 5.7 thousand times. Over the past 30 days, it averaged 20 installs per day.

Changelog of TrueData

Show changelog

Developer information for Sierra Bullets

Sierra Bullets

ballistics@sierrabullets.com

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Comments on TrueData for Android

★★★★★ Josh Hegman · Dec 23, 2025

This is the best ballistics app I've ever seen by far. It's so easy to add your data. It is the cleanest I could imagine. I love all the easy-to-use options. Keep it up guys.

★★★★★ Daniel Angulo · Jun 22, 2026

I love this app, no adds, no paid subscription, gives me all the info I need to get my DOPE

★☆☆☆☆ David Stanley · May 20, 2026

Doesn't do anything. Just shows a data screen. No ballistics info that I can find

Google Play Rankings for TrueData

This app is not ranked

Technologies used by TrueData

15 permissions

Subscribe to see full permission and library details

Trust & Safety: App requests a broad set of permissions, including location, network, Bluetooth, and advertising identifiers. It also references a DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION. Review the permissions and ensure they are used in line with privacy and platform policies.

Frequently asked questions about TrueData

Is TrueData free?

Yes. TrueData is free on Google Play.

Is TrueData still available?

Yes. TrueData is on Google Play, and the last update we saw was on October 9, 2026.

Does TrueData contain ads?

No. Google Play does not list TrueData as containing ads.

How large is TrueData?

TrueData is 25.35 MB.

Is TrueData suitable for children?

Google Play gives TrueData a high maturity rating. It is meant for adults.

How many times has TrueData been installed?

Google Play lists 5,000+ installs for TrueData.

How do people rate TrueData?

TrueData scores 3.78 out of 5 stars, from 11 ratings on Google Play.

Who made TrueData?

TrueData was developed by Sierra Bullets. It is listed in the sports category on Google Play.

What are the best alternatives to TrueData?

People looking at TrueData also look at these sports apps: Ballistics Calculator 2026, Revic Ops, Element Ballistics, Lapua Ballistics, Hornady.

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