CHRESTUS is a revolutionary tool for quickly investigating every argument for and against the historical existence of Jesus. As well as being a handy offline reference glossary, this app contains its own Bayesian calculator, for estimating your own probability that Jesus existed, using a basic model widely employed by scientists, governments, and corporations. Includes an expandable chronology graphic to visually see the references to Jesus and when they happened. And it gathers all known argument trees into one place, for and against, so for any question asked, you can find the answer, as far as it's known. Put together with the collaboration of Dr. Richard Carrier (author of On the Historicity of Jesus) in developing its structure and content, it will be continually updated to become and remain the most complete app for the purpose ever developed. Currently, it has no rival.

What's New

Version 2.0

Fixed iphone X problem and some additional points added, as well as grammar fixes

Ratings and Reviews

2.3 out of 5
6 Ratings
6 Ratings

Richard Carrier’s Pocket Guide to Mythicism


It’s a good start.

I would like to like this app more than I do. Hopefully, future updates will add some of the features that I think are missing. Firstly, the app is designed with only mobile phones in mind. On an iPad, it only appears in portrait orientation as if the tablet were big iPhone. Although its layout and workflow are logical and efficient, most of the entries only scratch the surface of the topics they are related to. The app would benefit greatly from hypertext links to Dr. Carrier’s blog, Wikipedia, and/or other Internet sources. It is also sorely in need of a search function.



Ironically the only sources cited in this app are Bible passages. Contains what seems like baseless conjecture and I expected much more from something attempting to go against millennia of academia.

Interesting discussion points but not what is advertised.

Not well designed

j diver

Doesn’t display well at all on iPhone X. Been broken for months. No fixes.


Reality Revolutions Inc.
135.2 MB
Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© Richard Carrier


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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