Comparison

Khmer Compass vs ZeroMark

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Khmer Compass

This utility app offers a stylish compass, a handy flashlight, and an SOS light feature. It also displays your current location's address and opens a map to that spot.

Highlights
  • Nice design compass
  • Flashlight
  • SOS light
  • Display current location address
  • Open map of current location
Features
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Khmer Compass provides features: - nice design compass - flashlight - SOS light - display address of your current location - open map of your current location

About

ZeroMark

This app uses your iPhone camera and AI to instantly score your shooting targets. It analyzes every shot, provides detailed performance analytics, and offers AI-driven coaching cards to help you improve accuracy.

Highlights
  • AI-powered shot scoring
  • Detailed performance analytics
  • AI coaching cards for improvement
  • Firearm and ammunition logging
  • Built-in and custom drill library
  • Session comparison tools
Features
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ZeroMark turns your iPhone camera into a precision range analyst. Photograph any IDPA target after your shooting session and Machine Learning Vision scores every shot in seconds — zero zone, minus-one, minus-three, head box, or miss — with a confidence rating for each impact. INSTANT AI SCORING Point your camera at your paper target, capture the image, and ZeroMark's vision analysis pipeline maps every bullet hole to the correct IDPA zone. No manual counting, no spreadsheets, no guesswork. Raw accuracy data, right at the range. SHOT-LEVEL DETAIL Tap any shot on the interactive canvas to inspect its zone, confidence score, and exact normalized position on the target. PERFORMANCE ANALYTICS Track your progress across sessions with a full analytics dashboard: · Accuracy trend charts over time · Zone distribution breakdown (A-zone %, C-zone %, misses) · Clock-position diagram — see your consistent pull direction at a glance · Centroid bias compass — where your group center actually lands · Shot grouping trend — tighten your groups over weeks · Performance radar — multi-axis snapshot of your current skill profile AI COACHING CARDS ZeroMark detects fault patterns — low left pulls, high fliers, inconsistent grip pressure — and surfaces targeted coaching cards with drills designed to fix the specific mechanical fault it identified. YOUR ARSENAL Log every firearm in your safe: make, model, variant, caliber, notes. Add your ammunition loads. Track which gun you used in each session and compare average points across your entire collection. DRILL LIBRARY Built-in drills for accuracy, speed, draw, and movement — organized by category. Add custom drills for your own training protocols. SESSION COMPARISON Select any two sessions and compare them side-by-side: zone breakdown, total score, round count, and grouping — so you can see exactly what changed and what didn't. BUILT FOR SERIOUS SHOOTERS ZeroMark is designed for IDPA competitors, practical shooters, and anyone who wants to improve accuracy with data instead of gut feel. The app stores everything locally using SwiftData — your training history stays on your device, or in iCloud. Privacy: all analysis is processed via iOS Machine Learning Vision. No account required.

Screenshots

Khmer Compass4 screens
ZeroMark4 screens

Verdict

The call

The clearest difference is rating: ZeroMark at 5.0 against Khmer Compass's 3.0. ZeroMark also leads on ads (none vs shown). Khmer Compass's advantage is in-app purchases (none vs 2) and iOS requirement (12.0 vs 17.0). On price, ratings volume and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. ZeroMark sells 2 one-off in-app purchases. Khmer Compass asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

ZeroMark holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Scorecard5 real differences · 4 level
Khmer Compass versus ZeroMark: the parameters behind the verdict, then further details
ParameterKhmer CompassZeroMark
PriceFreeFree
Rating3.0 (1 ratings)5.0 (1 ratings) — better
Number of ratings11
Update frequencyEvery 3 months—
AdsYesNo — better
In-app purchasesNo — betterYes
MonetizationAd-supported — betterFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.0 — better17.0
Further details — not scored
Size34 MB8 MB
Age rating4+4+
DeveloperRotha HeBlack Knight Labs

In-app purchases

None

Khmer Compass

No in-app purchases

2 purchases

ZeroMark

One-time2
  • Pro$9.99
  • iCloud Sync$24.99

Questions

Is Khmer Compass free?
Khmer Compass is free to download, with no in-app purchases.
Is ZeroMark free?
ZeroMark is free to download, with in-app purchases available.
Which has better reviews, Khmer Compass or ZeroMark?
ZeroMark is rated higher. Khmer Compass averages 3.0 out of 5 from 1 ratings, while ZeroMark averages 5.0 from 1 ratings.
Do Khmer Compass or ZeroMark have ads?
Khmer Compass shows ads; ZeroMark does not.

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