Comparison

OVB Multi Factor Authenticator vs Deepen

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

Head to head
About

OVB Multi Factor Authenticator

Features
Read full description

Use this app to authenticate yourself biometrically or with TOTP with ease. Just by scanning a qr code and using your phones biometrical sensor.

About

Deepen

Transform passive reading into active learning by speaking your thoughts aloud. This app creates a personal knowledge map from your spoken insights, connecting ideas across all the books you read. It helps you remember what you've learned and query your own reading history.

Highlights
  • Log pages read and track progress
  • Answer spoken questions about content
  • Generate concept maps from spoken answers
  • Connect ideas across multiple books
  • Query your personal reading library
  • Save lookup words and memorable passages
  • Import Goodreads shelves
Features
Read full description

You finish a chapter, feel like you understood it, and a month later almost nothing is left. That is the normal outcome of reading, not a personal failing. Reading is passive: the text goes in, feels clear, and leaves no trace you can retrieve. Deepen makes it active, and it takes about a minute. HOW IT WORKS 1. Log the pages you read. Your progress bar moves. 2. Deepen asks you one open question. "What was the author actually arguing there?" or "What did you disagree with?" 3. You answer out loud, in your own words, for about a minute. 4. Your answer comes back as concepts, connections, and the questions you still have. 5. Those concepts join a map of everything you have ever read. Speaking an idea back in your own words is retrieval practice, which is the best-evidenced way to turn reading into memory. Almost nobody does it, because writing notes is work. Talking for a minute is not. THE MAP IS THE POINT Every concept you articulate becomes a node. When the same idea shows up in a second book, Deepen links them without being asked. Over a few months you stop having a pile of separate books and start having one connected body of reading. Read something about legitimacy in a history book, meet it again in a book about organizations, and the map shows you the two are talking to each other. ASK YOUR OWN LIBRARY Ask a question in plain language and get an answer built only from what you have said about the books you have actually read. Not the internet. Your own words, with the notes they came from listed underneath. NOTHING IS EVER SCORED Deepen does not test you chapter by chapter. Nobody wants to be graded on their evening. The questions after each session are open and never scored, because the point is to make you think, not to make you correct. When you finish a book, it asks once more: what will you still be thinking about in a year? Your answer joins the map like any other. It is a lap of honour, not an exam. ALSO IN THE APP - Keep the words you had to look up, with the book you met them in - Keep the passages worth remembering, and share one as a sticker - Scan a barcode to add a book, or import your Goodreads shelves - A home screen widget showing the book you are on WORKS WITH PAPER Deepen never asks what you are reading on. Paper, library copy, hardback, secondhand, an ebook, a PDF. You talk, so it does not matter. Nothing to sync, no highlights to export, no cable. BUILT TO BE PRIVATE Your notes and your map live on your iPhone. The map is computed on the device, so it works with no signal at all. There is no account and no sign-up. FOR PEOPLE WHO READ ON PURPOSE Deepen is for nonfiction readers who want the reading to stick: students, researchers, people working through a field, anyone who has ever finished a good book and been unable to say what it argued. DEEPEN PRO Deepen is free to try. Pro unlocks unlimited recaps, the map across every book, and Ask. - Monthly: $5.99 - Annual: $49.99 with a 7-day free trial Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel in your Apple Account settings. Privacy Policy: https://chamallox.github.io/deepen-legal/privacy Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Support : https://chamallox.github.io/deepen-legal/support/

Screenshots

OVB Multi Factor Authenticator4 screens
Deepen4 screens

Verdict

The call

The clearest difference is in-app purchases: OVB Multi Factor Authenticator at none against Deepen's 3. Deepen's advantage is update cadence (every 4 days vs every 9 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. Deepen sells 3 in-app purchases, starting at $6.99 per 7 days. OVB Multi Factor Authenticator asks for nothing beyond the download.

UpkeepUpdate frequency

OVB Multi Factor Authenticator ships an update every 9 months, Deepen every 4 days. The most recent releases landed on October 3, 2026 and October 5, 2026 respectively.

Scorecard2 real differences · 8 level
OVB Multi Factor Authenticator versus Deepen: the parameters behind the verdict, then further details
ParameterOVB Multi Factor AuthenticatorDeepen
PriceFreeFree
Rating—5.0 (1 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—1 — better
Update frequencyEvery 9 monthsEvery 4 days — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Freemium
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS17.517.0 — better
Further details — not scored
Size57 MB16 MB
Age rating4+4+
DeveloperOVB Holding AGFrancois Sempe

In-app purchases

None

OVB Multi Factor Authenticator

No in-app purchases

3 purchases

Deepen

Subscriptions3
  • Pro Weekly$6.997 Days
  • Pro Annual7 Days trial$49.991 Year
  • Pro Annual7 Days trial$79.991 Year

Questions

Is OVB Multi Factor Authenticator free?
OVB Multi Factor Authenticator is free to download, with no in-app purchases.
Is Deepen free?
Deepen is free to download, with in-app purchases available.
Do OVB Multi Factor Authenticator or Deepen have ads?
Neither OVB Multi Factor Authenticator nor Deepen shows ads.
Which is updated more often, OVB Multi Factor Authenticator or Deepen?
OVB Multi Factor Authenticator ships an update every 9 months, and Deepen every 4 days. Most recently, OVB Multi Factor Authenticator was updated on October 3, 2026 and Deepen on October 5, 2026.

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