Granum
Shotgun pattern analysis
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Granum is a shotgun patterning companion for clay and field shooters. Photograph your pattern board after each session and Granum turns it into calibrated, comparable data - pellet counts, spread diameters, equipment records, and choke recommendations.
PATTERN ANALYSIS
Draw two concentric circles on your photo to define the main spread and scatter zones, then calibrate to real-world size by tracing a reference line. Every result is stored against the gun, choke, and load you were using, in millimetres or inches. The enhancement pipeline crops, lifts contrast on faded cardboard, and tunes detection sensitivity first. Pellet detection then finds the impacts automatically.
EQUIPMENT
Log every gun, choke, and ammunition load in full detail - barrel and stock specs, chamber sizes, choke constriction, powder charges, wads, hulls, primers, lot numbers, and cost per box. Reloads get their own section, and any item can carry photos.
CHOKE CALCULATOR (PRO)
Enter a target distance and desired spread, and Granum ranks every choke by predicted match quality. Your own recorded data always takes priority over generic estimates.
CHOKE COMPARISON (PRO)
Compare pattern performance across chokes in one table, filtered by gun and ammunition, to see which delivers the tightest or most consistent spread at your distance.
SPREAD CHART (PRO)
An interactive spread-vs-distance curve with your own data overlaid as scatter points. Drag to read exact values at any distance.
FIELD NOTES
No time for a full analysis? Record choke, distance, and observed spread in seconds. Field notes feed the choke calculator alongside full pattern data.
LIBRARY
Every pattern and field note in one searchable list, filterable by distance, temperature, location, weather, gun, choke, ammunition, date, and rating, in grid or list view.
SCENARIO PLANNER (PRO)
Lay out IPSC targets at real-world scale and overlay a calibrated pattern - or an averaged pattern group - to see what your spread and scatter zones actually cover at a given distance. Paper targets, plates, and poppers at any custom size.
SHELL PLANS (PRO)
Plan your rig before you shoot. Build a shooting order shell by shell, or let the loading-order calculator work it out from your starting load, reload batches, and any special shells. You get a colour-coded, numbered rig grid you can drag to fine-tune, with an optional overfill warning.
PATTERN GROUPS (PRO)
Group patterns shot with the same setup and compare averaged results instead of single shots.
CLOUD BACKUP (PRO)
Automatic backup to iCloud after every save, one-tap restore to a new device, and local .granum export for offline archiving.
GRANUM PRO
Photographing, analysing, and logging your patterns is free. A Granum Pro subscription unlocks the features marked above. Subscriptions renew automatically and can be cancelled at any time in your store account.
MORE
Share any pattern as a clean image card with rings, a centre-of-impact crosshair, and key metrics. Custom overlay colours throughout. Metric or imperial from a single setting. Crash reporting opt-out - no account required, and no data leaves your device unless you enable cloud backup. Dark and light modes tuned for outdoor readability.
Whether you're testing loads for sporting clays, evaluating chokes for a hunting season, or building a long-term ballistic log, Granum gives every range visit a permanent, measurable record.
Privacy Policy: https://saentisoft.com/granum/privacy-policy/
Terms of Use (EULA): https://saentisoft.com/granum/eula/
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
SCENARIO
• Archive a scenario from its swipe actions - it drops out of the main list but keeps its data; an Archived view lists them with a Restore action and Undo.
• Group scenarios into folders, one per match stage; move scenarios between them, and rename or delete a folder without losing its scenarios.
• Search, sort and filter the scenarios list by name, gun, choke, ammunition, target count, background photo and date created.
• Two new toggles in the More menu label the signed distance from each spread ring's edge to the targets, and draw center-to-center lines from each overlay to the targets; both are remembered across sessions.
• Customization > Overlay Labels: show model names or nicknames, and choose which of gun, ammo and choke appear on the canvas label and info banner; long names now wrap instead of being cut off mid-word.
• The pattern picker now explains an uncalibrated pattern instead of just hiding it, with a Calibrate action, and a saved overlay that loses its calibration shows a "Not calibrated" row instead of silently disappearing.
• Fixed the ruler swallowing taps with no explanation - turning it on now shows a banner with an exit button, and tapping a target or overlay explains how to leave.
• Fixed the rename dialog's caret jumping to the start while typing.
PATTERNS
• Archive a pattern from its detail screen; archived patterns still count in the spread chart, choke calculator and choke history.
• Pattern photos are now framed around their spread and scatter rings everywhere - library, groups, home and detail - the way share cards already were. Customization > Pattern Photos controls how tight the framing is, turns it off, or hides rings on specific screens.
• The library and overlay picker now filter through a chip dialog like the scenarios list, instead of an accordion sheet.
SHELL PLANS
• Save keeps the editor open and remembers your calculator settings (starting state, reloads, ammo and overrides), so reopening an uncalculated plan brings everything back with Calculate ready; changing ammo or a reload after calculating flags the shooting order as out of date.
• Fixed touch freezes and missed taps - dragging a rig slot, tapping the quantity steppers repeatedly, or reordering the shooting order could leave a touch stuck or ignored.
VIDEO
• Moving Target marking now works like calibration: hold to place the scale and marks, drag to adjust, with a magnifier.
• Fullscreen video can rotate to landscape for wide clips, with step, scrub and frame controls floating over the picture.
FIXES
• Fixed hard-to-tell-apart confirm and cancel icons in calibration banners - confirm is now sage green, cancel is rose.
• Fixed the second calibration point being hard to place near the first - the grab radius now scales with zoom, and placing a new point near an existing one no longer grabs it instead.
The developer, Saentisoft, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Location
- User Content
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Saentisoft
- Size
- 84.6 MB
- Category
- Sports
- Compatibility
Requires iOS 16.4 or later.
- iPhone
Requires iOS 16.4 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
13+
- 13+
- Frequent
Guns or Other Weapons
- In-App Purchases
Yes
- Granum Pro Annual $19.99
- Granum Pro Lifetime $59.99
- Granum Pro Monthly $2.99
- Copyright
- © Saentisoft
