TritonPanelsWhat an OPDS catalog is
OPDS is an open way for a server to list books. Calibre’s content server is the one most people meet first. Komga, Kavita and other servers can expose a catalog the same way. TritonPanels has a Calibre card and a general OPDS card, and it can search, sort and use facets the catalog offers.
The address, the sign-in types and the Calibre-specific steps are in the OPDS and Calibre guide.
Read-only, on purpose
For OPDS, TritonPanels does not send reading progress back to the server. Your place is saved on that phone or tablet. A second device does not pick it up from Calibre. If you need the place to follow you, use Komga or Kavita, which do sync both ways. That limit is the main thing to know before you pick OPDS as the only link between devices. Syncing progress compares the three.
Honest limit: OPDS in TritonPanels is for browsing and reading. It is not a progress sync.
Sign-in and platforms
Basic, Digest and OAuth are the sign-in methods. Passwords sit in the iOS Keychain or Android encrypted storage and are sent only to your server. Platforms are iPhone and iPad on iOS 17 or later, and Android 7.0 or later. There is no Mac app and no web app.
| OPDS, including Calibre | Komga and Kavita | |
|---|---|---|
| Browse and read | Yes | Yes |
| OPDS 1 and 2 | Yes | Komga and Kavita use their own APIs |
| Progress | Stays on the device | Two-way with the server |
| Account | Only the catalog’s own sign-in | Only the server’s own sign-in |
Offline copies
You can keep a book offline after it has been downloaded. A catalog that is only reachable at home will not stream on a train. Reading comics offline explains Keep offline and the download queue.
Price
There is no free version. New subscribers get a 14-day trial, then a monthly or yearly subscription. The App Store or Google Play shows the price. There are no ads and no TritonPanels account. The Komga and Kavita pages are the ones to use when the server can take progress back.
Frequently asked questions
Does TritonPanels write reading progress back to Calibre?
No. Calibre and other OPDS catalogs are read-only. Progress stays on the device. Komga and Kavita are the servers that sync both ways.
Which OPDS versions does it support?
OPDS 1 and OPDS 2, with search, sort and facets, and Basic, Digest or OAuth sign-in.
Is there an OPDS app for Android and iPhone?
TritonPanels reads OPDS on both: iOS 17 or later, and Android 7.0 or later. There is no Mac or web version.
Is the OPDS reader free?
No. TritonPanels needs a subscription after a 14-day trial. There is no free version and there are no ads.
Sources
Checked 15 October 2026. Claims about other apps come from the pages linked below. TritonPanels claims come from this site. A store price is the price that listing showed, and it can differ by country.
Read your comics with TritonPanels
A comic and manga reader for iPhone, iPad and Android. CBZ, CBR, CB7, CBT, PDF and image-based EPUB from your device, your cloud, a network share or your own Komga, Kavita or OPDS server — single page, spreads, continuous scroll or Panel by Panel. No ads, no account. 14-day free trial, then a monthly or yearly subscription.
Your own files: TritonPanels reads comics you already have. It does not sell, host or supply comics, and it cannot open copy-protected (DRM) purchases that are locked to another store’s app. Komga, Kavita, Calibre, Dropbox and the other names on this page belong to their owners, who do not endorse TritonPanels.