BOSS LIGHT vs Zero Helper
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
BOSS LIGHT
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This app is used to control dual color temperature light products. It can adjust display mode, brightness, color temperature, and also shake to adjust brightness.
Zero Helper
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Zero Helper takes the guesswork out of zeroing a rifle, carbine or air gun. Choose your zero β’ Tell it how you shoot (close range, general purpose or precision) and it recommends zero distances for your velocity and sight height β’ Compare where each zero peaks and where it comes back on target See the whole trajectory β’ A chart of your point of impact from the muzzle out to 1,000 yards, with near and far zero marked β’ A table of drop at common distances β’ Show my work: every step of the calculation, so you can check it Dial it in β’ 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 β’ MOA and MIL turrets, any click value, in yards and inches or meters and centimeters Print true-scale targets β’ MOA and MIL grid targets for Letter, A4 and 24Γ36 posters, sized for the distance you shoot β’ Bullseye rings, crosshair and size check bars, with your rifle's details printed on it Keep a log β’ Save each rifle with its caliber, velocity, optic and units β’ Log range sessions, maintenance and zero changes for each rifle, plus a journal for range days β’ 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
Screenshots
Verdict
The clearest difference is price: BOSS LIGHT at Free against Zero Helper's $9.99. BOSS LIGHT also leads on update cadence (every 6 weeks vs every 13 months) and iOS requirement (11.0 vs 16.4). On ads, in-app purchases and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
BOSS LIGHT is free to download; Zero Helper costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.
BOSS LIGHT ships an update every 6 weeks, Zero Helper every 13 months. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.
| Parameter | BOSS LIGHT | Zero Helper |
|---|---|---|
| Price | Free β better | $9.99 |
| Update frequency | Every 6 weeks β better | Every 13 months |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 11.0 β better | 16.4 |
| Further details β not scored | ||
| Size | 26 MB | 42 MB |
| Age rating | 4+ | 17+ |
| Developer | ε₯ε ι’ | Michael Johnston |
In-app purchases
BOSS LIGHT
No in-app purchases
Zero Helper
No in-app purchases





