B737 Alerts
by fss.aero
- Navigation
- Paid
- Zombie
- Small & simple · 89
- Rating
- 5.0
- 5 ratings · Türkiye storefront
- Last update
- Nov 1, 2017
- Version 1.80.2
- Size
- 57 MB
- Category
- Navigation
- Tracked since
- Oct 9, 2026
Estimated revenue
A model estimate with a likely range, not a reported figure.
No estimate. Apps outside the grossing charts, and some countries, have no reliable rank-to-revenue curve, so we show nothing rather than a guess.
How this estimate is made
Rank: we take the app's best Top Grossing rank on the latest chart day. Category ranks are converted into an equivalent overall rank, because a #10 in Finance earns far less than a #10 overall.
Curve: that equivalent rank is read off a rank-to-revenue curve anchored on public company revenue and market-data reports for the US iPhone App Store.
Country: the curve is scaled per country (Japan is roughly a third of the US, Türkiye under 1%). Where we have no scale, such as China, there is no estimate.
Range: the likely range widens with country, category and chart depth. It is a plausible span, not a statistical confidence interval.
Not included: ads, payments outside the App Store, and any difference between gross sales and what the developer keeps. Low confidence means indirect data; medium means several independent sources agree.
Full methodScreenshots
As shown on the App Store listing.
About this app
Text from the App Store listing.
B737 Alerts is a handy reference guide to the error messages produced by Boeing 737-600, -700, -800, -900, and BBJ series.
Designed for professional pilots and maintenance personnel, B737 Alerts covers three types of errors:
- Those from the PFD/ND (Next Generation only)
- Those from the FMC
- Those from the panel modules.
In all, nearly four hundred errors are covered.
Control head annunciations are cross-linked to QRH procedures as a handy study aid.
As always, your FAA-Approved Flight Manual is the final authority as to the safe operation of your airplane, but this is a great training aid for those new in type, studying the systems, or facing a checkride.
Each error has a link to a detailed description of the error as well as suggestions for immediate corrective action. Messages are also classified by system and ATA chapter, thus helping you focus on your FCOM or maintenance manual for additional research.
B737 Alerts was developed by Bill Bulfer, a recently retired captain with a major airline with extensive time in type. Bill is also the author of the Cockpit Companion series and the FMC Guide, soon to be adapted for the iPad.
What’s new
Release notes for the latest version, as written by the developer.
- iOS 11 compatibility.
- Higher-resolution graphics.
- Better memory management.
- Misc Bug fixes.
Rank history
Daily position in the South Korea charts. #1 is at the top.
- Best rank
- #83
- Current rank
- #83
- Days charting
- 7 of 7
On the charts today
Small & simple score
How realistic it is for a small team to build something like this.
89/100
Small & simple
- Developer size70% · 25
Developer: 2 apps on the charts
- Audience size100% · 20
Ratings: 5
- App size60% · 10
Size: 57 MB
- Price model100% · 15
Price model: paid
- Demand proof100% · 30
Best rank #1, 30 countries
An indicator, not a fact. We can't see team size. Calculated Oct 25, 2026 · method i2
How the score worksVersion history
- 1.80.2LatestReleased Nov 1, 2017