Comparison

Odhyyon vs Unknown app

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

Head to head
About

Odhyyon

This app helps students and teachers manage school-related information. Students can access academic details, fees, and notifications, while teachers can track attendance, input marks, and send alerts.

Highlights
  • Student information access
  • Attendance tracking
  • Results viewing
  • Tuition fee management
  • Notifications
  • Teacher attendance management
  • Mark input
  • Report viewing
Features
Read full description

Using this app, students and teachers can easily manage the information shared with their schools and colleges. Features: * Students can avail of school information. * Students can view their personal information. * Attendance information. * Published results. * Students can easily manage their tuition fees. * Different types of notifications. * Teachers can view their personal info. * Teachers can get student attendance. * Teachers can send notifications for different events. * Teachers can input students' marks. * Teacher can view different reports.

About

Unknown app

Transform documents into audiobooks with a lifelike voice. Read along as text highlights in sync with narration. Sync your library across devices and even use your own voice for narration.

Highlights
  • PDF and EPUB narration
  • Lifelike voice narration
  • Synchronized text highlighting
  • Custom voice recording
  • Cross-device syncing
  • arXiv paper search
  • Mind map generation
Features
Read full description

Unknown turns dense reading into listening. Add a PDF, EPUB or paper and Unknown narrates it in a lifelike voice, lighting up every line on the real pages as it plays. YOUR OWN VOICE Read a few short passages aloud and Unknown narrates any document in your voice. Try it free for 5 minutes. Unknown Pro includes 1 free hour, and you can add 3, 6 or 12 more hours as one-time purchases. Your recordings stay on your device and go to our cloud only with documents narrated there, and are deleted as soon as each is ready. NO MAC NEEDED Add documents right on your iPhone or iPad: upload a file, paste a link, or share one from any app. Without a Mac, Unknown converts them in the cloud, up to 30 documents and 2,000 pages a month, 500 pages per document. With the Unknown app for Mac, documents are narrated privately on your Mac with no limits and appear here automatically. READ ALONG ON THE REAL PAGES The actual pages render on screen while the current paragraph lights up in sync with the audio. Swipe to a page and the audio follows. YOUR WHOLE LIBRARY, IN SYNC Progress, bookmarks, notes and mind maps sync through your account between your iPhone, iPad and Mac. Pause on the Mac, resume on your iPhone. FIND PAPERS ON ARXIV Search arXiv from the app and listen to any paper. MIND MAPS Maps generated on your Mac arrive with each document: the whole argument at a glance. WIDGETS AND SHORTCUTS Pick up where you left off from a Home Screen widget or a Control Center control. PRIVACY Documents your Mac narrates sync through your own iCloud, and no server of ours sees them. Documents converted in the cloud are sent over an encrypted connection, deleted after 7 days, never read by a person and never used to train AI. Voice recordings sent along for narration are deleted as soon as the document is ready. BUILT FOR LISTENING Background audio with lock screen controls, adjustable speed, 15 second skips, and paragraph by paragraph highlighting. SUBSCRIPTION Your first 2 documents are free, and a sample document is included. Unknown Pro unlocks the whole app with a weekly, monthly or yearly subscription; monthly and yearly start with a 7-day free trial for new subscribers. Payment is charged to your Apple ID when you confirm the purchase, or when the free trial ends. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period, and can be managed or cancelled in your App Store account settings. Unknown Pro also works in the Mac app and on unknown.ac. Voice hours for narrating in your own voice are one-time purchases that need an active subscription to use. Terms of Use: https://unknown.ac/terms.html Privacy Policy: https://unknown.ac/privacy.html

Screenshots

Odhyyon3 screens
Unknown app4 screens

Verdict

The call

The clearest difference is in-app purchases: Odhyyon at none against Unknown app's 6. Odhyyon also leads on iOS requirement (15.0 vs 17.0). Unknown app's advantage is update cadence (every 4 days vs every 2 months). On price, rating, ratings volume and ads 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. Unknown app sells 6 in-app purchases, starting at $2.99 per 7 days. Odhyyon asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Odhyyon against 5.0 for Unknown app. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

UpkeepUpdate frequency

Odhyyon ships an update every 2 months, Unknown app every 4 days. The most recent releases landed on November 3, 2026 and November 10, 2026 respectively.

Scorecard4 real differences · 5 level
Odhyyon versus Unknown app: the parameters behind the verdict, then further details
ParameterOdhyyonUnknown app
PriceFreeFree
Rating5.0 (1 ratings)5.0 (1 ratings)
Number of ratings11
Update frequencyEvery 2 monthsEvery 4 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFreemium
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better17.0
Further details — not scored
Size31 MB57 MB
Age rating4+4+
DeveloperADDIE Soft LtdVritam LP

Customer experience

Odhyyon

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Unknown app

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Odhyyon

No in-app purchases

6 purchases

Unknown app

Subscriptions3
  • Unknown Pro Weekly$2.997 Days
  • Unknown Pro Monthly7 Days trial$4.991 Month
  • Unknown Pro Yearly7 Days trial$49.991 Year
One-time3
  • 3 Hours in Your Voice$4.99
  • 6 Hours in Your Voice$9.99
  • 12 Hours in Your Voice$19.99

Questions

Is Odhyyon free?
Odhyyon is free to download, with no in-app purchases.
Is Unknown app free?
Unknown app is free to download, with in-app purchases available.
Which has better reviews, Odhyyon or Unknown app?
Odhyyon and Unknown app are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.
Do Odhyyon or Unknown app have ads?
Neither Odhyyon nor Unknown app shows ads.
Which is updated more often, Odhyyon or Unknown app?
Odhyyon ships an update every 2 months, and Unknown app every 4 days. Most recently, Odhyyon was updated on November 3, 2026 and Unknown app on November 10, 2026.

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