Comparison

LockDown Browser vs Codon

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

Head to head
About

LockDown Browser

This application creates a secure browser environment for online exams, preventing access to other applications, websites, or device functions. It ensures the integrity of assessments by locking users into the exam until submission. It is compatible with specific learning systems and can be used with proctoring systems if enabled by an instructor.

Highlights
  • Locks down exam environment
  • Prevents switching applications
  • Blocks access to other URLs
  • Disables screenshots
  • Prohibits copying or printing
  • Integrates with learning systems
Read full description

LockDown Browser is a custom browser that locks down the exam environment within specific learning and assessment systems. When LockDown Browser is used during an online exam, you are unable to go to other URLs, switch applications, take screenshots, copy questions or print. It essentially locks you into the exam until it’s submitted for grading. Important: This application can only be used with the Respondus Monitor proctoring system if your instructor has enabled the use of an iPad for the exam. If your instructor hasn't enabled the use of an iPad for the exam, you will be unable to use this application with it. While LockDown Browser isn’t the most exciting app available, it does make online assessments possible. And, hey, you can download it for free. This is NOT a limited-feature version and there are NO advertisements of any type.

About

Codon

Explore biology from molecules to ecosystems with 100 structured lessons. Features include quizzes, researcher profiles, and landmark experiments. Study offline with bundled content and track progress with flashcards and notes.

Highlights
  • 100 structured biology lessons
  • Researcher profiles and glossary
  • Quizzes with explanations
  • Spaced-review flashcards
  • Offline study capabilities
  • Home screen widgets
Features
Read full description

Codon is a structured biology study course with 100 lessons covering cells and molecules, inheritance, evolution, ecology, organisms and physiology. It teaches mechanisms and evidence without presenting the course as a university degree or medical advice. WHAT IS INSIDE 100 lessons with estimated reading times and on-device narration 82 researcher profiles 735 glossary entries 20 quizzes with answer explanations 18 landmark experiments Spaced-review flashcards, bookmarks and notes Three Home Screen widgets: a source idea, a term and a figure FREE AND FULL ACCESS The first ten lessons are free. A one-time Full Access purchase opens the other 90 lessons. The current price for your App Store region is shown in the app before purchase. No subscription or app account is required. OFFLINE STUDY Lessons, profiles, glossary entries, quizzes and case studies are bundled for offline reading. Loading a purchase, buying or restoring Full Access, and opening external reference or support links may require a network connection.

Screenshots

Codon4 screens

Verdict

The call

The clearest difference is rating: Codon at 5.0 against LockDown Browser's 1.2. LockDown Browser's advantage is in-app purchases (none vs 1) and ratings volume (4K vs 1). On price, update cadence, 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. Codon sells 1 one-off in-app purchase. LockDown Browser asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Codon holds the better App Store score, 5.0 against 1.2. That said, the two scores are not equally well evidenced: LockDown Browser has 4K ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

LockDown Browser ships an update every 5 weeks, Codon every 3 weeks. The most recent releases landed on November 11, 2026 and November 10, 2026 respectively.

Scorecard5 real differences · 5 level
LockDown Browser versus Codon: the parameters behind the verdict, then further details
ParameterLockDown BrowserCodon
PriceFreeFree
Rating1.2 (4K ratings)5.0 (1 ratings) — better
Positive reviews7.5% of reviews—
Number of ratings4K — better1
Update frequencyEvery 5 weeksEvery 3 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPadiPhone, iPad — better
Requires iOS15.0 — better17.0
Further details — not scored
Size17 MB6 MB
Age rating4+12+
DeveloperRespondus Inc.OMAR DANIEL GRAZIANO

Customer experience

LockDown Browser

All ratings3,954 ratings
Positive4.5%
Neutral0.9%
Negative94.6%
Written reviews425 reviews
Positive7.5%
Neutral1.6%
Negative90.8%

Codon

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

Bugs and requests

LockDown Browser

Reported bugs

4 issues
  • Fails to load tests and quizzes
  • Prevents device power off and exit
  • Incompatible with other apps like Canvas
  • Randomly kicks users out of exams

Requested features

4 requests
  • Improved compatibility with iPads
  • Better error handling and recovery
  • Streamlined setup and onboarding
  • More user-friendly interface

Codon

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

LockDown Browser

No in-app purchases

1 purchases

Codon

One-time1
  • Codon Full Access$9.99

Questions

Is LockDown Browser free?
LockDown Browser is free to download, with no in-app purchases.
Is Codon free?
Codon is free to download, with in-app purchases available.
Which has better reviews, LockDown Browser or Codon?
Codon is rated higher. LockDown Browser averages 1.2 out of 5 from 4K ratings, while Codon averages 5.0 from 1 ratings.
Do LockDown Browser or Codon have ads?
Neither LockDown Browser nor Codon shows ads.
Which is updated more often, LockDown Browser or Codon?
LockDown Browser ships an update every 5 weeks, and Codon every 3 weeks. Most recently, LockDown Browser was updated on November 11, 2026 and Codon on November 10, 2026.

Other comparisons