# Compass & Altimeter: TrueNorth — Elevation, GPS & Barometer

> Accurate compass, altimeter, and barometer for navigation and measurement. (iPhone/iPad app by Ungo Inc..)

- Source: https://appshunter.io/ios/app/compass-and-altimeter-truenorth/id6746292032 (this page in markdown: same URL + `.md`)
- Developer: [Ungo Inc.](https://appshunter.io/developer/1813952838)
- Category: Navigation, Utilities
- Price: Free with in-app purchases
- Rating: 3.80/5 from 6 App Store ratings
- Age rating: 4+
- Requires: iOS 18.6 · 30 MB
- Languages: American English, Arabic, German (Germany), Italian, Japanese, Korean, Brazilian Portuguese, Russian, Chinese (Simplified, China), European Spanish and 1 more
- Released: 2025-05-30
- Data updated: 2026-08-22
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/compass-and-altimeter-truenorth/id6746292032/reviews.md

## What is Compass & Altimeter?

Transform your iPhone or iPad into a professional navigation instrument with the most accurate compass, altimeter, and barometer app available. Whether you're hiking mountain trails, exploring new areas, or need precise measurements for work, our app provides reliable readings you can trust.

PROFESSIONAL COMPASS True and magnetic north readings with real-time declination display. High-precision compass rose with customizable orientations. Works with device flat or held upright for maximum versatility.

PRECISE ALTIMETER Three altitude measurement sources for maximum accuracy:

    Barometric altitude using atmospheric pressure sensors

    GPS satellite altitude with vertical accuracy indicators

    Ground level API data from global elevation databases Switch between measurement sources instantly based on conditions and requirements.

ATMOSPHERIC PRESSURE MONITORING Real-time barometric pressure readings in hPa or inHg units. Essential for weather monitoring and accurate altitude calculations. Manual QNH calibration for professional-grade precision.

GPS COORDINATE DISPLAY Accurate latitude and longitude coordinates with precision indicators. Share your exact location when needed. Works offline without internet connection for remote area navigation.

MEASUREMENT PRECISION Multiple unit support for international use. Convert between meters and feet for altitude, various pressure units, and speed measurements. Manual calibration options for specialized requirements.

ADVANCED FEATURES Vertical speed indicator shows climb and descent rates. Device orientation display with pitch, roll, and yaw measurements. Magnetic declination calculation and display for navigation accuracy.

NEW: ANALYTICS & EXPORT Review your navigation and altitude history with the in-depth analytics module. Export your measurement data to save, share, or analyze externally.

PROFESSIONAL APPLICATIONS Perfect for hiking, mountaineering, surveying, aviation, marine navigation, geocaching, search and rescue operations, and outdoor education. Trusted by professionals who need reliable measurement tools.

PREMIUM EXPERIENCE Ad-free interface for uninterrupted use during critical navigation tasks. Clean, intuitive design optimized for outdoor visibility. New: Three additional themes for even more customization and better readability in different environments.

PRIVACY AND RELIABILITY Your location data stays on your device. No tracking, no data collection, no internet required for core functions. Works in airplane mode for remote area use.

TECHNICAL SPECIFICATIONS Supports both true and magnetic north compass modes. Barometric pressure accuracy to 0.01 hPa. GPS altitude accuracy indicators. Works on all iPhone models with appropriate sensors.

Basic functionality is free to use. Unlock the full premium experience with your choice of a monthly subscription, a yearly subscription (with 3-day free trial), or a one-time lifetime purchase for unlimited access.

Download now and turn your iPhone into a professional navigation instrument. Whether you're conquering peaks or surveying land, accurate navigation is just a tap away.

Compatible with all navigation and mapping applications. Perfect companion for outdoor adventures and professional surveying work.

Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Key features

- True and magnetic north compass
- Barometric and GPS altimeter
- Atmospheric pressure monitoring
- GPS coordinate display
- Offline navigation
- Vertical speed indicator
- Data export

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Annual Subscription | $19.99 | per year |
| TrueNorth Monthly | $4.99 | per month |
| Remove All Ads | $9.99 | per year |
| Weekly Subscription | $1.99 | per 7 days |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| TrueNorth Lifetime | $39.99 | one-time |



## Frequently asked questions about Compass & Altimeter

### What are the main features of TrueNorth?

TrueNorth offers a professional compass with true and magnetic north readings, a precise altimeter using barometric pressure and GPS, and atmospheric pressure monitoring. It also displays GPS coordinates and works offline.

### How accurate is the altimeter in TrueNorth?

The altimeter in TrueNorth uses three sources for maximum accuracy: barometric pressure sensors, GPS satellite altitude with vertical accuracy indicators, and ground level API data from global elevation databases.

### Does TrueNorth work offline?

Yes, TrueNorth works offline without an internet connection, making it suitable for remote area navigation. Core functions do not require internet access, and it can even work in airplane mode.

### What are the subscription options for TrueNorth?

TrueNorth offers a weekly subscription for $1.99 with a 3-day free trial, a monthly subscription for $4.99 with a 3-day free trial, and an annual subscription for $19.99 with a 3-day free trial. There is also a 'Remove All Ads' option for $9.99.

### Is TrueNorth suitable for professional use?

Yes, TrueNorth is designed for professional applications such as hiking, mountaineering, surveying, aviation, marine navigation, geocaching, and search and rescue operations. It provides reliable measurement tools trusted by professionals.

### Does TrueNorth have ads?

TrueNorth contains advertisements. Users can opt for a premium experience which includes an ad-free interface, available through subscription or a one-time purchase.

### What devices is TrueNorth compatible with?

TrueNorth is compatible with iPhone and iPad devices. It requires devices with appropriate sensors for its compass, altimeter, and barometer functions.

### How often is TrueNorth updated?

The latest version of TrueNorth is 1.0.7, and it was last updated on March 14, 2026. This indicates a relatively recent update, suggesting ongoing development and support.

## Version history (last 5 releases)

### 1.0.8 — 2026-06-13

Bug fixes.

### 1.0.7 — 2026-03-14

Home Screen widgets

### 1.0.6 — 2026-03-05

Bug fixes.

### 1.0.5 — 2026-02-06

Bug fixes.

### 1.0.4 — 2025-08-26

PREMIUM: Compass and altitude themes.
PREMIUM: Analytics module and data export tool.
New subscription and purchase options.
New app name.

## Apps similar to Compass & Altimeter

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All apps by Ungo Inc.: https://appshunter.io/developer/1813952838

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-22.*