# B737 Alerts vs Navigraph Charts

The clearest difference is price: Navigraph Charts at Free against B737 Alerts's $9.99. Navigraph Charts also leads on rating (4.9 vs 4.3) and review sentiment (67% vs 38%). B737 Alerts's advantage is iOS requirement (9.0 vs 16.4). On ads, in-app purchases and device support there is nothing between them.

Navigraph Charts is free to download; B737 Alerts costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Navigraph Charts holds the better App Store score, 4.9 against 4.3. That said, the two scores are not equally well evidenced: Navigraph Charts has 2.8K ratings behind it against 9, so its average is the more settled of the two. Written reviews point the same way: 38% of B737 Alerts's written reviews are positive against 67% of Navigraph Charts's.

B737 Alerts ships an update every 5 months, Navigraph Charts monthly. Both last shipped on October 26, 2026.

## The numbers

| Metric | B737 Alerts | Navigraph Charts |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | [4.3 (9 ratings)](https://appshunter.io/ios/app/b737-alerts/id453260249/reviews) | **[4.9 (2.8K ratings)](https://appshunter.io/ios/app/navigraph-charts/id999805677/reviews)** |
| Number of ratings | 9 | **2.8K** |
| Positive reviews | 37.5% of reviews | **67.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Monthly** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 54 MB | 94 MB |
| Requires iOS | **9.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [fss.aero](https://appshunter.io/developer/446805306) | [Navigraph](https://appshunter.io/developer/999805676) |

## What reviewers say

### B737 Alerts

[App page](https://appshunter.io/ios/app/b737-alerts/id453260249)

A comprehensive reference guide for Boeing 737 error messages, covering PFD/ND, FMC, and panel module issues. It provides detailed descriptions, corrective actions, and cross-links to procedures for pilots and maintenance personnel.

**Highlights:** Covers 737-600, -700, -800, -900, and BBJ series errors, Details PFD/ND, FMC, and panel module errors, Includes nearly 400 errors, Cross-links annunciations to QRH procedures, Provides error descriptions and corrective actions, Classifies messages by system and ATA chapter

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Navigraph Charts

[App page](https://appshunter.io/ios/app/navigraph-charts/id999805677)

This app provides comprehensive aviation charts and navigation data for flight simulation. It offers worldwide IFR and VFR chart coverage, updated regularly, and integrates seamlessly with popular flight simulators. Features include moving maps, weather overlays, and annotation tools to enhance the simulated flight experience.

**Highlights:** Jeppesen charts and navigation data, Worldwide IFR and VFR chart coverage, Regular 28-day AIRAC updates, Moving Maps, Weather overlays (radar, winds), 3D Globe Projection, Annotation tools

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Excellent navigation and flight planning features
- 🔒 Seamless integration with flight simulators
- 👍 Intuitive and user-friendly interface
- 🚀 Comprehensive database of charts and airport information
- 👍 Helpful for both VFR and IFR flying

**What reviewers complain about**

- 🐛 Frequent crashes and freezes after recent updates
- 🔋 High battery consumption on mobile devices
- 🔒 Requires a paid subscription to access full functionality
- 🐛 Occasional issues with weather data and chart rendering
- 🔒 Lack of offline mode for charts and data

**Reported bugs**

- Sim link not working consistently on some platforms
- Waypoint recognition issues when entering SIDs/STARs
- Occasional blank or missing chart displays
- Login problems after recent iOS updates

**Requested features**

- Add ability to draw and annotate on charts
- Improve integration with other flight planning tools like PFPX
- Implement live traffic overlay on charts
- Introduce VFR chart options
- Add more customization options for chart views


## Frequently asked questions

### Is B737 Alerts free?

B737 Alerts costs $9.99, with no in-app purchases.

### Is Navigraph Charts free?

Navigraph Charts is free to download, with no in-app purchases.

### Which has better reviews, B737 Alerts or Navigraph Charts?

Navigraph Charts is rated higher. B737 Alerts averages 4.3 out of 5 from 9 ratings, while Navigraph Charts averages 4.9 from 2.8K ratings.

### Do B737 Alerts or Navigraph Charts have ads?

Neither B737 Alerts nor Navigraph Charts shows ads.

### Which is updated more often, B737 Alerts or Navigraph Charts?

B737 Alerts ships an update every 5 months, and Navigraph Charts monthly. Most recently, B737 Alerts was updated on October 26, 2026 and Navigraph Charts on October 26, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*