PrecAlgoRANGE

iOS 17.0+ · Android 8.0+

The data book for precision shooting

Manage your equipment, ammunition and DOPE.

Home (dark mode): the gear library with a rifle and its profile and zeroing entries
Ballistic solver (light mode): 600 yd solves to UP 4.85 MRAD, LEFT 0.15 MRAD
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Features

Fig. 01–05 come from one demo data set: .308 Win, SMK 175 gr, 100 yd zero, solved at 600 yd.

01

Ballistic profiles and solver

One profile per rifle and load: DOPE, trajectory, crosswind and lead tables.

Drag model
G1 / G7 · drag curves
Truing
Muzzle velocity · BC · transonic scale
600 yd solution
UP 48 clicks / 4.85 MRAD
Multi-zone wind
Pro
Toggled separately
Coriolis · Eötvös
Transonic range
Marked separately
Solution readout: UP 48 clicks / 4.85 MRAD
Fig. 01 — 600 yd · standard atmosphere
02

Ammunition and ballistic coefficient

The BC used by the solver is shown large with its source: manufacturer, box table fit, custom or entered by hand.

Drag model
G1 / G7 · one-tap switch
Source
Manufacturer · box table fit · custom · by hand
Entry
Typed directly
Drag curves
Import · Pro
Restore
Manufacturer value in one tap
Ammunition detail: G7 BC 0.243 with the G1 / G7 / curve switch
Fig. 02 — SMK 175 gr · G7 0.243
03

Guided zeroing

Four steps: set up, check, plot, adjust. Turret direction and clicks follow from the shots fired and the scope’s click value.

Shots
As many as you fire · plotted on the target
Output
Turret direction as marked · click count · rounding remainder
Target
Common sizes built in · custom supported
Units
MRAD and MOA side by side
Zero adjustment: direction and clicks for the elevation and windage turrets
Fig. 03 — Set up · check · plot · adjust
04

Reticle hold point

Hold point drawn on the reticle from the current solution.

Style
9 generic styles · custom reticles (Pro)
Unit
MRAD / MOA · from the scope specification
Focal plane
FFP / SFP · SFP scales the grid count by magnification
Reference
Deer · silhouette · steel plate outlines · lead in body lengths
Reticle hold point: impact, shot table and wind drift
Fig. 04 — Tactical grid · FFP · 27×
05

Equipment library and factory specifications

Rifles, optics and ammunition are recorded separately and combined into a setup. When creating one, you search the factory rifle catalogue by brand and model, and the configuration, barrel length and twist come with it; sight height is measured with the help of a diagram.

Built-in catalogue
Factory rifles · optics · factory ammunition
Ready to reference
Twist rate · barrel length · BC · muzzle velocity
Scope
Adjustment per click · turret direction as marked
Beyond the catalogue
Entries can be created by hand
Equipment set detail: calibre, rifle model, barrel length, twist rate and twist direction
Fig. 05 — .308 Win · 1:11 in twist
06

Visual rangefinder and field tools

Range and crossing speed from an object of known size. Results go to the solver and reticle. The tools page adds a weather card, compass and level; weather readings feed the solver.

Principle
Known size ÷ angular size (mil relation)
References
Paper targets · steel plates · common animals and vehicles
Result
Distance · lateral speed · error percentage
Lens
Telephoto preferred
Weather
Temperature · station pressure · humidity · density altitude
Edition
Visual rangefinder is Pro
Visual range & speed: distance and lateral speed after locking onto a steel plate
Fig. 06 — Demo scene · 18 in steel plate
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Several colour schemes for different settings

Light, dark and night, or follow the system.

Light ground, dark type, the densest of the three. Suited to sorting data indoors and looking up ammunition and factory rifle specifications.

Light mode: the ballistic solver on a light ground
Light mode: the reticle simulation on a light background
Dark mode: the ballistic solver on a dark ground
Dark mode: the reticle simulation on a dark background
Night mode: the ballistic solver in a single red hue
Night mode: the reticle simulation in a single red hue
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Privacy and data

Equipment parameters, ammunition data, DOPE data and photos belong to the user, who decides item by item whether anything leaves the device.

01

Local by default

Solving, zeroing and ranging all run on the device, and the app is fully usable without signing in.

02

Sync is authorised item by item

Sync starts with your consent. Photos are excluded.

03

Export and deletion

The backup exports as a single zip containing local records and photos and can be restored on another device; the account and all local data can be deleted from within the app at any time. The privacy policy and terms ship with the app and are readable offline.

04

Accounts

Email and password, Apple, Google and passkeys.

05

App lock

Unlock with a passcode or biometrics.

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Pricing

01

Free

Price
$0
Rifles
1
Ballistic profiles
1
02

Pro

Yearly
$19.99 / year · 14 days free
Monthly
$2.99 / month · 7 days free
Lifetime
$59.99 · One payment

Prices in USD. Other regions follow store pricing.

  • Unlimited rifles and ballistic profiles
  • Camera rangefinder and target speed
  • Reticle view and moving-target lead
  • Hit probability and trajectory comparison
  • Multi-zone wind and BC truing
  • Drag curve import
Appendix

Frequently asked questions

Q.01Which units are supported?

Metric, imperial or custom, set once in Settings. Distance in m or yd, length in mm or in. Angle follows the scope: MRAD, true MOA or clicks.

Q.02Is an internet connection required?

No. Solving, zeroing and ranging run on the device. Sign-in, purchases, sync, catalogue search and weather need a connection.

Q.03How accurate is the visual rangefinder?

It gives an estimate with its error percentage: the more certain the reference size and the more pixels the target covers, the smaller the error. A telephoto lens is recommended; where available, a laser rangefinder takes precedence.

Q.04Are photos uploaded?

Not to PrecAlgo servers. Zeroing targets and ammunition box tables stay on the device, and a frozen rangefinder frame is discarded when you leave the screen. Backup files and the optional iCloud backup stay under your control.

Q.05Can the data be exported?

Yes. The backup is a single zip file containing the locally stored records and photos, and it can be restored on another device.

Q.06Which platforms are supported?

iOS 17.0 or later, with landscape layouts on iPad, and Android 8.0 or later. Both share the same calculation rules and data model.

iOS beta Android beta

App Store

iOS 17.0 or later

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