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Zero Helper

by Michael Johnston

  • Utilities
  • Paid
View on the App Store
Rating
0.0
0 ratings
Last update
Oct 19, 2026
Version 1.1.0
Size
44 MB
Category
Utilities
Tracked since
Oct 24, 2026

Estimated revenue

A model estimate with a likely range, not a reported figure.

No estimate. Apps outside the grossing charts, and some countries, have no reliable rank-to-revenue curve, so we show nothing rather than a guess.

How this estimate is made

Rank: we take the app's best Top Grossing rank on the latest chart day. Category ranks are converted into an equivalent overall rank, because a #10 in Finance earns far less than a #10 overall.

Curve: that equivalent rank is read off a rank-to-revenue curve anchored on public company revenue and market-data reports for the US iPhone App Store.

Country: the curve is scaled per country (Japan is roughly a third of the US, Türkiye under 1%). Where we have no scale, such as China, there is no estimate.

Range: the likely range widens with country, category and chart depth. It is a plausible span, not a statistical confidence interval.

Not included: ads, payments outside the App Store, and any difference between gross sales and what the developer keeps. Low confidence means indirect data; medium means several independent sources agree.

Full method

Screenshots

As shown on the App Store listing.

About this app

Text from the App Store listing.

Zero Helper takes the guesswork out of zeroing a rifle, carbine or air gun.

Choose your zero

  • Tell it how you shoot (close range, general purpose or precision) and it recommends zero distances for your velocity and sight height
  • Compare where each zero peaks and where it comes back on target

See the whole trajectory

  • A chart of your point of impact from the muzzle out to 1,000 yards, with near and far zero marked
  • A table of drop at common distances
  • Show my work: every step of the calculation, so you can check it

Dial it in

  • Measure how far your group landed from the aim point, and the click calculator says how many clicks to turn, up or down, left or right
  • MOA and MIL turrets, any click value, in yards and inches or meters and centimeters

Print true-scale targets

  • MOA and MIL grid targets for Letter, A4 and 24×36 posters, sized for the distance you shoot
  • Bullseye rings, crosshair and size check bars, with your rifle's details printed on it

Keep a log

  • Save each rifle with its caliber, velocity, optic and units
  • Log range sessions, maintenance and zero changes for each rifle, plus a journal for range days
  • Export a backup and import it on another device

Yards or meters, inches, centimeters or millimeters, feet or meters per second: pick your units for the app or for each rifle.

Everything stays on your device. There's no account and no ads.

Trajectory figures are estimates from a simple model. Always confirm your zero with live fire, and follow your range's safety rules.

Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://yeix.io/zero-helper/privacy

What’s new

Release notes for the latest version, as written by the developer.

v1.1.0
  • A new look, with light and dark themes
  • Home shows your active rifle's trajectory at a glance
  • Choose a zero by how you shoot: close range, general purpose or precision
  • Printed targets are now true scale in yards and meters
  • Click calculator with a plot of where your group landed
  • Export and import backups, including from earlier versions

Rank history

Daily position in the Oman charts. #1 is at the top.

Best rank
#4
Current rank
#4
Days charting
1 of 7

On the charts today

Small & simple score

How realistic it is for a small team to build something like this.

81/100

Not flagged as small & simple

  • Developer size100% · 25

    Developer: 1 app on the charts

  • Audience size– · 20

    No data, weight redistributed

  • App size100% · 10

    Size: 44 MB

  • Price model100% · 15

    Price model: paid

  • Demand proof50% · 30

    Best rank #4, 1 country

An indicator, not a fact. We can't see team size. Calculated Oct 24, 2026 · method i2

How the score works

Version history

  • 1.1.0LatestReleased Oct 19, 2026