Comparison

OpenResty XRay vs Digia Preview

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head

About

OpenResty XRay

Features

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OpenResty XRay offers deep and continuous online profiling and monitoring, advanced noninvasive observability, and real-time troubleshooting for your web applications, databases, web servers, and operating systems. Armed with our advanced dynamic tracing technologies, OpenResty XRay treats every running application as a read-only database directly and only collects data truly needed for particular problem types. OpenResty XRay does an intelligent deep analysis of your applications' performance and behaviors and narrows down any problems automatically to the root causes.

About

Digia Preview

Features

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Digia empowers developers to revolutionize app development. With our innovative platform, seamlessly integrate dynamic and static internet-powered features, such as stories and landing screens, into your apps. Streamline version management, access comprehensive developer documentation, and gather valuable user feedback. Join the Digia community and supercharge your app development process today.

Screenshots

OpenResty XRay4 screens

Digia Preview3 screens

Verdict

The call

OpenResty XRay and Digia Preview are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 7, 2026 and October 11, 2026 respectively.

ScorecardNo meaningful differences

OpenResty XRay versus Digia Preview: the parameters behind the verdict, then further details
Parameter	OpenResty XRay	Digia Preview
Price	Free	Free
Update frequency	Every 3 weeks	Every 3 weeks
Ads	No	No
In-app purchases	No	No
Devices	iPhone, iPad, iPod	iPhone, iPad, iPod
Requires iOS	12.0 — better	13.0
Further details — not scored
Size	28 MB	83 MB
Age rating	+4	4+
Developer	OpenResty Inc.	Digia Tech

In-app purchases

None

OpenResty XRay

No in-app purchases

None

Digia Preview

No in-app purchases

Questions

Is OpenResty XRay free?

OpenResty XRay is free to download, with no in-app purchases.

Is Digia Preview free?

Digia Preview is free to download, with no in-app purchases.

Do OpenResty XRay or Digia Preview have ads?

Neither OpenResty XRay nor Digia Preview shows ads.

Which is updated more often, OpenResty XRay or Digia Preview?

OpenResty XRay ships an update every 3 weeks, and Digia Preview every 3 weeks. Most recently, OpenResty XRay was updated on October 7, 2026 and Digia Preview on October 11, 2026.