The average handloader juggles three to five separate tools just to manage load development. Your data lives in a notebook, a spreadsheet, a Notes app, and maybe a crumpled piece of paper in the range bag. Several apps now aim to fix this. Most only solve one piece of the puzzle.
We tested six of the most popular reloading apps side by side and scored them on what actually matters at the bench and at the range. Here is what we found.
What Makes the Best Reloading App?
A complete reloading workflow demands load data reference, recipe management, cost tracking, chronograph data logging, and range performance notes. Ideally, all of that connects to specific firearms so you can pull up your proven load for a particular rifle in seconds.
That integrated bench-to-range workflow is the gap no single app has fully closed. Most tools handle one or two tasks well and ignore the rest. Here is how the top contenders stack up.
Reloading Assistant: The Load Data Library
Reloading Assistant from Polycompsol is one of the most downloaded reloading apps on both platforms, with over 100,000 installs on Google Play and a 4.3-star rating from more than 700 reviews. Its biggest strength is a built-in database of over 31,000 recipes from Accurate, Alliant, Hodgdon, Somchem, and Vihtavuori.
The cost calculator breaks down price per round by component and compares it against factory ammo prices. The journal feature logs chronograph data with automatic statistical calculations, and recent updates added unit conversions and custom caliber support.
Where it falls short: The journal requires you to select a recipe before adding entries, which trips up many new users. There is no firearms management, no weather logging, no target photo storage, and no way to connect your range session back to your load development process.
Best for: Reloaders who primarily need load data reference and basic cost tracking. Price: $3.99 on iOS, free with ads on Android.
Vihtavuori Reload: Polished but Brand-Locked
Vihtavuori's free Reload app is arguably the most polished reloading app available. The interface is clean, it works offline, and the reloading data tables include excellent filtering by powder type, manufacturer, bullet type, and caliber. A February 2026 update added test shooting data recording with automatic velocity statistics directly inside diary entries. Each diary supports up to five loads for side-by-side comparison.
The recipe diary is genuinely useful. You can copy and modify existing loads, rate them on a five-star scale, attach test shooting results with photos, and email formatted printouts. Multi-device sync keeps everything accessible across ten languages.
Where it falls short: Vihtavuori removed the ability to log recipes using other manufacturers' powders. If you shoot Hodgdon, IMR, or Alliant alongside Vihtavuori, you need a separate system for those loads. There is no cost calculator, no firearms management, and no chronograph import from devices like LabRadar or MagnetoSpeed.
Best for: Dedicated Vihtavuori powder users who want clean recipe management and load data access. Price: Free.
Hornady: Two Apps, Zero Integration
Hornady offers two separate apps that together cover more ground than most competitors. The Reloading App is a digital version of the Hornady Handbook of Cartridge Reloading, covering more than 200 calibers. Individual calibers start at $0.99, or you can subscribe for ongoing data access.
The Ballistics App is a separate free download featuring the 4DOF (Four Degrees of Freedom) calculator. Unlike traditional BC-based calculators, 4DOF uses Doppler radar-measured drag coefficients with exact physical modeling of each projectile. It accounts for aerodynamic jump and spin drift, making it one of the most accurate trajectory calculators available to consumers. It works offline and includes bullets from Sierra, Berger, Lapua, and Nosler alongside Hornady's lineup.
Where it falls short: The two apps do not talk to each other. The Reloading App is essentially a searchable digital manual. There is no recipe management, no cost tracking, no chronograph integration, no firearms database, and no way to log range sessions. You look up data in one app, calculate trajectory in the other, and record results somewhere else entirely.
Best for: Shooters who want Hornady's trusted load data and a best-in-class free ballistics calculator. Price: Reloading App free with in-app purchases ($0.99/caliber). Ballistics App free.
Hodgdon Reloading Manual: Data Behind a Paywall
Hodgdon's app provides access to annual reloading manuals covering Hodgdon, IMR, Winchester, Ramshot, and Accurate powders. The 2026 edition contains over 11,000 loads at $12.99 per manual.
Where it falls short: User reviews consistently describe the app as a PDF reader with poor navigation. Searching for a caliber returns every page mentioning it rather than jumping to the data tables. There is no bookmarking, no load logging, no recipe management. Hodgdon's free website (hodgdonreloading.com) offers the same load data with better search tools.
Best for: Reloaders who need offline access to Hodgdon family powder data. Price: Free download, $12.99 per annual manual.
RCBS Reloading App: Hardware-First Logger
The RCBS app was built primarily to control the ChargeMaster Link, ChargeMaster Supreme, and MatchMaster powder dispensers via Bluetooth. But its Load Log feature also saves detailed reloading data with target photos, environmental conditions, and firearm profiles. You can export entries as PDFs.
Where it falls short: User reviews report crashes and data loss after updates. There is no chronograph integration, no cost calculator, and the load log does not allow editing existing entries. You have to start over for any modification. The app works best as a companion to RCBS hardware rather than a standalone reloading tool.
Best for: Reloaders using RCBS Bluetooth dispensers who want combined dispenser control and load logging. Price: Free.
GUNR: The Integrated Approach
GUNR takes a fundamentally different approach by connecting every stage of the reloading and shooting workflow in one platform. Rather than specializing in a single task, it builds around your firearms as the central organizing hub.
Each firearm stores its own recipes, load tests, activity logs, chronograph data, weather conditions, and target photos. The load testing module supports both charge weight and COAL development with an interactive speed data table, per-row ES and SD calculations, and multi-line graphs. When you find a winning load, you save it directly as a recipe linked to that rifle.
At the range, GUNR auto-captures GPS location and weather conditions. You can import chronograph readings from six device formats including LabRadar, MagnetoSpeed, Garmin Xero, and FX Radar. Target photos attach directly to specific sessions in a full-screen gallery.
The ecosystem includes companion apps: DOPE (Data On Previous Engagement) for logging elevation, windage, slope, and compass data, and COR (Cost Of Reloading) for per-round cost calculations with break-even analysis.
Where it falls short: GUNR does not include a built-in load data reference database from powder manufacturers. You still need a reloading manual or manufacturer website for starting loads. Some features like PDF activity export are still being finalized, and the learning curve is steeper than single-purpose apps.
Best for: Precision shooters and dedicated reloaders who want one system connecting load development, range sessions, chronograph data, and firearms management. Price: Free with premium features available.
Which Reloading App Should You Choose?
The honest answer depends on where your workflow breaks down. If your frustration is looking up load data, Vihtavuori Reload or Reloading Assistant solve that cleanly. For trajectory calculations, the Hornady 4DOF app remains the strongest free option.
But if your real problem is fragmentation, if you are tired of cross-referencing three apps and a notebook to remember which load your 6.5 Creedmoor liked best last month, GUNR is the only app unifying that entire workflow. Download GUNR free on iOS or Android and see if the integrated approach fits your bench-to-range process.
Disclosure: This comparison was written by the GUNR team. We have done our best to present each app's strengths and limitations fairly, because the reloading community deserves honest information. If we missed a feature or got something wrong, reach out and we will update this post.