Comparison

one more layer vs UniBook

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

Head to head
About

one more layer

Features
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Experience projects and 3D models by international engineering consultancy schlaich bergermann partner in augmented reality (AR). The app One more layer comes as an addition to the book multilayered and allows readers to interact with sbp’s body of work in their real-world environment. To access the digital content, use your mobile device to scan the book pages tagged with the AR symbol. • View 3D models: Look at the supporting structures of some of sbp’s key projects, including bridges, stadia, towers, and other buildings. • Project sheets: Find out key facts and read into the featured sbp projects. • Visual content: Browse picture galleries, watch interviews, and look at videos on selected projects, and new materials, among others. • Outlook: Find out what new projects sbp is working on right now, and what structures are to be built in the future. If you do not have the the book "multilayered" at hand, you can still use the app by downloading a PDF with some sample projects here: https://onemorelayer.de/samples.pdf IOS Development by: KUNSTMATRIX Technologies GmbH

About

UniBook

Features
Read full description

Tired of subscriptions? UniBook is a one-time-purchase reader for the EPUB, PDF, M4B, and MP3 files you own. Read and listen offline, keep your library organized, and pick up exactly where you left off. — WHY READERS CHOOSE UNIBOOK — PAY ONCE, READ FOR LIFE A single in-app purchase unlocks the full reader. No monthly plan and no automatic renewal. YOUR LIBRARY STAYS YOURS Import compatible DRM-free files through Files, iCloud Drive, or the Share extension. Your imported books remain on your device, UniBook does not upload your library, and no account is required. — FEATURES — EPUB READER • Adjustable text size and reading themes • Light, sepia, and dark reading themes • Save highlights and quotes • Share quotes as polished images • Resume from your saved position • See reading progress in the reader and your library PDF READER • Native PDF viewing • Page and progress tracking • Saved position for reliable resume • Progress visible alongside your other books AUDIOBOOK PLAYER • M4B and MP3 audiobooks • Single-file and multi-file books • Playback speed from 0.5x to 2x • Sleep timer • Background playback and lock-screen controls • Resume from your last position • Chapter navigation LIBRARY MANAGEMENT • Custom shelves and favorites • Dedicated Reading and Finished shelves • Active books stay easy to reach; completed books move to the end • Import several compatible files from Files • Add books and audiobooks from other apps with the Share extension • Share or remove your own files at any time READING STATISTICS • Daily reading and listening time • Reading streaks and daily goals • Yearly activity graph • Year in Review SIRI • Resume your last audiobook with the “Play Last Audiobook” shortcut Supported formats: EPUB, PDF, M4B, MP3 UniBook is built for readers who manage their own digital library and want a focused, private reading experience without a recurring subscription. Note: UniBook is a reader app. It does not sell, distribute, or provide book content. You are responsible for ensuring that you have the right to use every file you import. DRM-protected files are not supported.

Screenshots

one more layer4 screens
UniBook4 screens

Verdict

The call

The clearest difference is in-app purchases: one more layer at none against UniBook's 1. one more layer also leads on update cadence (every 9 days vs every 3 weeks) and iOS requirement (13.0 vs 26.0). On price, ads and device support 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. UniBook sells 1 one-off in-app purchase. one more layer asks for nothing beyond the download.

UpkeepUpdate frequency

one more layer ships an update every 9 days, UniBook every 3 weeks. The most recent releases landed on October 19, 2026 and October 25, 2026 respectively.

Scorecard3 real differences · 3 level
one more layer versus UniBook: the parameters behind the verdict, then further details
Parameterone more layerUniBook
PriceFreeFree
Update frequencyEvery 9 days — betterEvery 3 weeks
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better26.0
Further details — not scored
Size474 MB15 MB
Age rating4++4
Developersbp GmbHDenis Tronin

In-app purchases

None

one more layer

No in-app purchases

1 purchases

UniBook

One-time1
  • UniBook Premium$49.99

Questions

Is one more layer free?
one more layer is free to download, with no in-app purchases.
Is UniBook free?
UniBook is free to download, with in-app purchases available.
Do one more layer or UniBook have ads?
Neither one more layer nor UniBook shows ads.
Which is updated more often, one more layer or UniBook?
one more layer ships an update every 9 days, and UniBook every 3 weeks. Most recently, one more layer was updated on October 19, 2026 and UniBook on October 25, 2026.

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