Satisfactory
This app offers comprehensive assessment of enough scenarios that it seems omniscient. Its inclusion of video in this format makes it easier to absorb info. Although, the ability to view these grainy videos (and photographs) in landscape mode should have been a no-brainer.
In addition, I can understand the need for marketing, but I do not appreciate apps that market purchased items. Apps can be programmed to verify the existence of other apps on a device. All in all, I recommend this product as a good accompaniment to the book.
BTW, In-App Purchases add value inside the app. Purchase is made inside the app for this to happen. In other words, additional features for the app are sold inside the app.
Links to another app to buy a third app do not qualify as an In-App Purchase. The links are just part of an advertisement. And I did not see notice of In-App Advertisement (propaganda).
AcuteWatcher about
SAS Survival Guide, v1.7