---
title: "SlopeReader - Reviews, Revenue and Downloads in United States | Apple App Store"
description: "SlopeReader transforms your iPhone into a precision slope measurement tool designed specifically for golfers who use the Aimpoint Express green reading system.  MEASURE SLOPE WITH PRECISION  Place you"
---

# SlopeReader — United States
> Slope Measurement for Golf

![SlopeReader App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/96/e7/d6/96e7d656-4151-867b-fffd-d0cfd36742ee/AppIcon-0-0-1x_U007epad-0-1-85-220.png/434x0w.png)

**Developer:** [Stephen Lee](https://apptail.io/developer/stephen-lee-GUbrjb)
**Category:** Sports
**Rating:** 5.0/5 (3 ratings)
**Price:** Free
**Bundle ID:** com.golfphysics.SlopeReader
**Store:** Apple App Store
**Country:** United States
**Version:** 2.1 (released 2026-04-10)
**Original Release:** 2025-11-23
**Languages:** English

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/us/app/app/id6755605118)
**AppTail Page:** [https://apptail.io/app/slopereader-nvRx/united-states](https://apptail.io/app/slopereader-nvRx/united-states)

## SlopeReader Description
SlopeReader transforms your iPhone into a precision slope measurement tool designed specifically for golfers who use the Aimpoint Express green reading system.

MEASURE SLOPE WITH PRECISION

Place your phone flat on the green and instantly see the slope in real-time. The intuitive bubble level interface shows both forward/backward slope (pitch) and left/right slope (roll) with directional arrows pointing downslope.

Perfect for:
  • Learning what different slope percentages feel like
  • Validating your green reading on practice greens
  • Building muscle memory for Aimpoint Express stances
  • Understanding break on challenging greens

KEY FEATURES

  • Real-Time Bubble Level: Visual feedback with a moving bubble that shows slope direction and magnitude
  • Multiple Units: Switch between Percent (default), Degrees, and Radians
  • Smart Calibration: Account for your phone case or camera bump - calibrate once and it remembers
  • Directional Indicators: Color-coded arrows show which way the green slopes
  • Completely Offline: No internet required, works anywhere on the course
  • Always-On Display: Screen stays active while measuring slopes
  • Instant Readings: 60Hz sensor updates for smooth, responsive measurements

HOW IT WORKS

  1. Place your iPhone flat on the green at your ball position
  2. Wait for the bubble to stabilize
  3. Read the slope percentage and direction from the display
  4. Use with your Aimpoint Express technique to find your aim point

The calibration system ensures accurate readings even with a phone case. Simply calibrate on a known level surface once, and the app remembers your offset.

PERFECT FOR PRACTICE

Use SlopeReader on the practice green to:
  • Feel what 1%, 2%, 3% slopes actually feel like with your feet
  • Verify your slope reading accuracy
  • Build confidence in your green reading before competition
  • Train your perception to match reality

DESIGNED FOR GOLFERS

Built by golfers, for golfers. Simple, focused, and designed for real-world use on the course. No accounts, no subscriptions, no ads - just a tool that works.

Whether you're learning Aimpoint Express or refining your green reading skills, SlopeReader gives you the precise measurements you need to improve your putting.

Download SlopeReader and start reading greens like a pro.

## SlopeReader Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/20/f5/b6/20f5b615-a03f-d8d9-4e0c-723bbe1bb2f8/Simulator_Screenshot_-_iPhone_16_Pro_Max_-_2025-11-24_at_10.58.32_resized.png/1284x2778.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/62/99/1e/62991e66-418f-499a-98d5-ba6ac5f5cb50/Simulator_Screenshot_-_iPhone_16_Pro_Max_-_2025-11-24_at_10.57.53_resized.png/1284x2778.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/eb/a0/66/eba0662d-8d66-7549-6109-4026cac2851b/Simulator_Screenshot_-_iPhone_16_Pro_Max_-_2025-11-24_at_10.58.06_resized.png/1284x2778.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/54/8c/28/548c284f-2628-5ec1-52d8-258aaeaacf6e/Simulator_Screenshot_-_iPhone_16_Pro_Max_-_2025-11-24_at_10.58.44_resized.png/1284x2778.png)

## SlopeReader Rating Breakdown in United States
- 5 stars: 3 (100%)
- 4 stars: 0 (0%)
- 3 stars: 0 (0%)
- 2 stars: 0 (0%)
- 1 stars: 0 (0%)





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## SlopeReader Available In
- [United States](https://apptail.io/app/slopereader-nvRx/united-states)
- [Australia](https://apptail.io/app/slopereader-nvRx/australia)
- [Azerbaijan](https://apptail.io/app/slopereader-nvRx/azerbaijan)
- [Canada](https://apptail.io/app/slopereader-nvRx/canada)
- [Algeria](https://apptail.io/app/slopereader-nvRx/algeria)
- [Japan](https://apptail.io/app/slopereader-nvRx/japan)
- [Austria](https://apptail.io/app/slopereader-nvRx/austria)
- [New Zealand](https://apptail.io/app/slopereader-nvRx/new-zealand)
- [Poland](https://apptail.io/app/slopereader-nvRx/poland)
- [Portugal](https://apptail.io/app/slopereader-nvRx/portugal)
- [Russia](https://apptail.io/app/slopereader-nvRx/russia)
- [Taiwan](https://apptail.io/app/slopereader-nvRx/taiwan)
- [Norway](https://apptail.io/app/slopereader-nvRx/norway)

---

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