Comparison

Fb2 vs OmniPDF

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

Head to head
About

Fb2

Convert fb2 e-book files to ePub format directly on your iPhone or iPad. Read books in any reader app without needing extra software. Supports large archives and includes library search.

Highlights
  • FB2 to ePub conversion
  • Directly on iPhone/iPad
  • Open in any book reader
  • Supports compressed archives
  • Library search by name/author
  • iTunes file transfer
Features
Read full description

Fb2-to-ePub is a file converter program from fb2 to ePub formats working directly in your iPhone/iPad. Now you can read e-books in popular in Russia fb2 format without installing any extra book-readers. After downloading an fb2 e-book through Safari or DropBox simply open it in Fb2-to-ePub app. The program converts your file to ePub format and allows opening a book in any book-reader application installed, e.g. iBooks. If you have got an e-book collection in your local computer just copy it with iTunes into the Documents of the application. It will allow to select the collection e-books, convert them into the standard format and send to the book-reader. The program is able to process compressed archives of unlimited volume. Books search in the library is possible by file name, name of book and author’s name.

About

OmniPDF

Features
Read full description

OmniPDF is a batch PDF processing tool. Select multiple files and use shared settings for compression, watermarks, passwords, or page organization. You can also combine several operations into a workflow to reduce repetitive processing and setup. Organize contracts, application documents, reports, and scanned files. Preview the results in the app and review changes before exporting or sharing. 【Batch Processing】 • Compress multiple PDFs with a target file size. • Find and permanently remove searchable sensitive text across multiple PDFs. • Add the same watermark or page numbering to multiple PDFs. • Set, change, or remove passwords required to open multiple files. • Check page orientation, remove blank pages, trim page margins, or adjust paper size. • Remove file metadata and annotations, or make editable content a fixed part of the page. 【Combine Multiple Steps】 • Choose several tools and set their execution order. • Combine compression, sensitive text removal, and watermarks in one workflow. • Save workflows you use frequently and reuse them later. • Review the results, then continue with other operations or export. 【A Complete PDF Toolkit】 • Merge, split, delete, extract, duplicate, and reorder pages. • Rotate and trim pages, insert pages, and replace pages. • Scan documents, turn images into PDF files, and export PDF pages as images. • Add text, annotations, signatures, date stamps, and stamps. Fill existing form fields. • Draw rectangles over areas to permanently remove sensitive content. 【Optional PDF Inspection】 • Check file size, page orientation, blank pages, password protection, annotations, form fields, and metadata. • Choose which items to process based on the inspection results. • Inspect first if needed, or choose a tool and start processing directly. Processing and result previews are available in the app. Exporting or sharing processed files requires an in-app purchase. OmniPDF — one batch of files, multiple steps, one workflow. Privacy Policy: https://zzthhj.github.io/OmniPDF/ Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Fb24 screens
OmniPDF3 screens

Verdict

The call

The clearest difference is in-app purchases: Fb2 at none against OmniPDF's 3. OmniPDF's advantage is update cadence (every 6 weeks vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.

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. OmniPDF sells 3 in-app purchases, starting at $3.99 per month. Fb2 asks for nothing beyond the download.

UpkeepUpdate frequency

Fb2 ships an update every 3 months, OmniPDF every 6 weeks. The most recent releases landed on October 6, 2026 and October 22, 2026 respectively.

Scorecard2 real differences · 6 level
Fb2 versus OmniPDF: the parameters behind the verdict, then further details
ParameterFb2OmniPDF
PriceFreeFree
Positive reviews46.7% of reviews—
Update frequencyEvery 3 monthsEvery 6 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS18.0 — better18.6
Further details — not scored
Size13 MB17 MB
Age rating4+4+
DeveloperSemyon Chertkovzhentao zhang

In-app purchases

None

Fb2

No in-app purchases

3 purchases

OmniPDF

Subscriptions2
  • OmniPDF Pro Monthly$3.991 Month
  • OmniPDF Pro Yearly$29.991 Year
One-time1
  • OmniPDF Pro Lifetime$59.99

Questions

Is Fb2 free?
Fb2 is free to download, with no in-app purchases.
Is OmniPDF free?
OmniPDF is free to download, with in-app purchases available.
Do Fb2 or OmniPDF have ads?
Neither Fb2 nor OmniPDF shows ads.
Which is updated more often, Fb2 or OmniPDF?
Fb2 ships an update every 3 months, and OmniPDF every 6 weeks. Most recently, Fb2 was updated on October 6, 2026 and OmniPDF on October 22, 2026.

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