Comparison

JustIN Mobile vs Mark Bookmark

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

Head to head
About

JustIN Mobile

This app allows users to manage building access using their smartphone. It provides digital keys for doors, elevators, and car park barriers, eliminating the need for physical keys and simplifying access control across multiple locations.

Highlights
  • Smartphone-based digital keys
  • Manage access to doors, elevators, barriers
  • Multi-site and multi-application support
  • Eliminates lost key issues
  • User-friendly interface
  • Store multiple digital keys
Features
Read full description

Salto JustIN Mobile access technology simplifies the users and dynamic key management process of users in a building. Receiving a key generated electronically on their smartphone, previously identified and authorized by the system, they can unlock the assigned doors from the JustIN Mobile app by selecting the appropriate key. Technologically cutting-edge, JustIN Mobile means the end of lost key hassles, expenses and waste. Plus, the technology isn't limited to one building or hotel room - it can also be used by staff and users on multiple sites for any kind of access types like main entrance doors, elevators, car park barriers, meeting rooms, etc. Combined with user-convenient features such as user friendly design or multi key possibilities to use the same app in different buildings, locations and for different applications, JustIN Mobile access control technology simplifies card issuing, fob and traditional PIN code management that can be lost, forgotten or broken by offering flexibility for diverse applications. People do not forget their phones as they forget their keys and, if lost, they are replaced rapidly. This is a major benefit for administrators, clients, and users. About Salto Systems: Salto is a leading global access solutions provider, part of the SALTO WECOSYSTEM. We develop pioneering facility access, identity management and electronic locking technology that ensures seamless, reliable and secure experiences. Through close customer relationships and innovative solutions, our global team of experts create timeless and meaningful products that positively impact people and planet. Stay connected with @saltosystems Salto Systems never ceases to improve! Stay tuned to our social networks to discover the features included in the new version of our JustIN Mobile app. No more hard decisions to make! You can now save multiple digital keys and access different premises with the new version of JustIN. @saltosystems #JustIN #AccessControl

About

Mark Bookmark

Capture physical notes and ideas from books and printouts, turning them into organized insights. Automatically catalog your reading and search for specific passages. Chat with your highlights to trace ideas across different sources.

Highlights
  • Scan and save passages with high accuracy
  • Record voice notes without unlocking device
  • Automatic cataloging by book ISBN
  • Searchable library of captured content
  • AI chat with highlights and annotations
  • Integrations with Notion and Readwise
  • Offline capture and sync
Read full description

Mark II is a smart bookmark that captures your physical notes and ideas, and turns it into organized insights for you to revisit later CAPTURE WITHOUT LEAVING THE PAGE Scan a passage and it's saved, at 99% text accuracy, with any missing letters or words reconstructed automatically. Or hold to record a voice note instead. No unlocking your phone, no typing, no losing the thread of the chapter. It works across your whole reading life — hardcovers, paperbacks, printouts, research papers, Kindle, iPad, and handwriting (beta). 30+ languages. A LIBRARY THAT BUILDS ITSELF Scan a book's ISBN once (beta) and everything you capture from then on files itself under the right title. No folders to design, no tags to maintain, nothing named twice. Over months, it becomes a catalogue of what you've actually read — not a system you have to keep feeding. FIND THE QUOTE YOU HALF-REMEMBER Search for a fragment and get the passage back with its source. Filter by topic, theme, or the moment you captured it. Copy it straight into whatever you're writing. TALK TO WHAT YOU'VE READ Chat with your own highlights and annotations. Trace an idea across different books. Ask about the thing you know you read but can't place. Mark AI answers from what you've captured and nothing else — it won't invent a passage, and it won't summarize a book you never opened. FITS THE SYSTEM YOU ALREADY HAVE Integrations with Readwise, Notion, and many more apps to come. Mark isn't asking you to move in. It's asking you to feed what you've already built. WORKS WHEREVER YOU READ Bluetooth only — pairs like AirPods. Captures save on the device when you're out of range and sync the moment you're back. A single USB-C charge lasts about a week of heavy reading. YOUR NOTES, HELD CAREFULLY Highlights and voice notes are encrypted and stored on AWS in North America. We don't hold personally identifiable information alongside your library, and you can request deletion of your data at any time. WHO IT'S FOR Students who annotate. Researchers who cite. Readers who underline in pencil and mean it. Anyone who has closed a book and been unable to say what was in it. WHAT'S FREE Downloading Mark is free, and so is everything core: highlighting, audio capture, auto-organization, and basic AI chat. An optional subscription unlocks the heavier AI features and advanced integrations. REQUIREMENTS The Mark II device is required for scanning and voice capture. Each device pairs to one account at a time. iOS only. Support: Support@mark.engineering Privacy Policy: thinkwithmark.com/policies/privacy-policy

Screenshots

JustIN Mobile4 screens
Mark Bookmark4 screens

Verdict

The call

The clearest difference is review sentiment: Mark Bookmark at 100% against JustIN Mobile's 25%. Mark Bookmark also leads on update cadence (every 4 days vs every 6 weeks) and rating (5.0 vs 4.6). JustIN Mobile's advantage is ratings volume (5.1K vs 2) and iOS requirement (15.6 vs 17.0). On price, ads, in-app purchases and monetization model 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Mark Bookmark holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: JustIN Mobile has 5.1K ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 25% of JustIN Mobile's written reviews are positive against 100% of Mark Bookmark's.

UpkeepUpdate frequency

JustIN Mobile ships an update every 6 weeks, Mark Bookmark every 4 days. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

Scorecard5 real differences · 5 level
JustIN Mobile versus Mark Bookmark: the parameters behind the verdict, then further details
ParameterJustIN MobileMark Bookmark
PriceFreeFree
Rating4.6 (5.1K ratings)5.0 (2 ratings) — better
Positive reviews25.1% of reviews100.0% of reviews — better
Number of ratings5.1K — better2
Update frequencyEvery 6 weeksEvery 4 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPod — betteriPhone
Requires iOS15.6 — better17.0
Further details — not scored
Size37 MB121 MB
Age rating4+4+
DeveloperSalto SystemsMark Inc

Customer experience

JustIN Mobile

All ratings4,266 ratings
Positive90.4%
Neutral2.5%
Negative7.2%
Written reviews291 reviews
Positive25.1%
Neutral14.8%
Negative60.1%

Mark Bookmark

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

JustIN Mobile

Reported bugs

3 issues
  • Keys randomly expire
  • Widget not working on latest iOS
  • Verification codes not received

Requested features

3 requests
  • Add Apple Watch app
  • Integrate with Apple Wallet
  • Improve guest access sharing

Mark Bookmark

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

JustIN Mobile

No in-app purchases

None

Mark Bookmark

No in-app purchases

Questions

Is JustIN Mobile free?
JustIN Mobile is free to download, with no in-app purchases.
Is Mark Bookmark free?
Mark Bookmark is free to download, with no in-app purchases.
Which has better reviews, JustIN Mobile or Mark Bookmark?
Mark Bookmark is rated higher. JustIN Mobile averages 4.6 out of 5 from 5.1K ratings, while Mark Bookmark averages 5.0 from 2 ratings.
Do JustIN Mobile or Mark Bookmark have ads?
Neither JustIN Mobile nor Mark Bookmark shows ads.
Which is updated more often, JustIN Mobile or Mark Bookmark?
JustIN Mobile ships an update every 6 weeks, and Mark Bookmark every 4 days. Most recently, JustIN Mobile was updated on October 24, 2026 and Mark Bookmark on October 25, 2026.

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