Comparison

Blue Light Filter vs Odd Lock

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

Head to head
About

Blue Light Filter

Reduce eye strain and improve sleep with an adjustable blue light filter. Organize your files, photos, and videos with an integrated file manager. Enjoy a seamless web browsing experience with built-in filtering and bookmarking.

Highlights
  • Adjustable blue light filter
  • Eye strain relief
  • Improved sleep quality
  • Intuitive file manager
  • Zip/unzip support
  • Integrated web browser
Read full description

Blue Light Filter is your all-in-one solution for a comfortable and productive digital experience on iOS. Equip your device with our adjustable blue light filter to alleviate eye strain and improve sleep quality, especially during nighttime browsing and reading. Effortlessly manage and organize your documents, photos, and videos with our intuitive file manager, featuring zip/unzip support. Enjoy a seamless web browsing experience with an integrated blue light filter and easy access to bookmarks and history. Designed with a user-friendly interface, the app ensures easy navigation for users of all ages, and is fully optimized for iOS with Dark Mode compatibility, haptic feedback, and quick actions via 3D Touch. Download Blue Light Filter today and transform your screen time into a safer, more comfortable, and more efficient experience. Privacy Policy: https://riviacorp.com/privacy-filter/ Terms of Services: https://riviacorp.com/terms-filter/ Support: https://riviacorp.com/

About

Odd Lock

This utility app helps you regain control over your device usage by restricting access to chosen applications. It requires completing a simple task, like speaking a phrase or walking, before apps become available for a set duration.

Highlights
  • App access restriction
  • Task-based unlocking
  • User-defined access periods
  • On-device processing
  • No account required
  • No personal data collection
Read full description

Odd Lock is an iOS application that helps users limit their use of selected apps. Using Apple's Screen Time framework, it restricts access to the apps a user chooses and requires the completion of a brief task before they can be reopened. For example, speaking a recorded phrase or walking a short distance. Once the task is completed the apps remain available for a user-defined period of time before resetting. The app requires no account, collects no personal data, and performs all processing on the device.

Screenshots

Blue Light Filter3 screens
Odd Lock4 screens

Verdict

The call

The clearest difference is price: Blue Light Filter at Free against Odd Lock's $4.99. Blue Light Filter also leads on ratings volume (137 vs 3) and iOS requirement (17.0 vs 26.5). Odd Lock's advantage is rating (5.0 vs 3.3) and in-app purchases (none vs 5). On 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

Blue Light Filter is free to download; Odd Lock costs $4.99 up front. Blue Light Filter sells 5 in-app purchases, starting at $4.99 per 7 days. Odd Lock asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Odd Lock holds the better App Store score, 5.0 against 3.3. That said, the two scores are not equally well evidenced: Blue Light Filter has 137 ratings behind it against 3, so its average is the more settled of the two.

UpkeepUpdate frequency

Blue Light Filter ships an update weekly, Odd Lock every 2 weeks. The most recent releases landed on October 17, 2026 and October 4, 2026 respectively.

Scorecard6 real differences · 4 level
Blue Light Filter versus Odd Lock: the parameters behind the verdict, then further details
ParameterBlue Light FilterOdd Lock
PriceFree — better$4.99
Rating3.3 (137 ratings)5.0 (3 ratings) — better
Positive reviews2.6% of reviews—
Number of ratings137 — better3
Update frequencyWeekly — betterEvery 2 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
DevicesiPhone, iPad, Mac — betteriPhone, iPad
Requires iOS17.0 — better26.5
Further details — not scored
Size19 MB7 MB
Age rating17+4+
DeveloperRivia Corp s.r.o.Abstract Syntax LLC

Customer experience

Blue Light Filter

All ratings137 ratings
Positive56.2%
Neutral2.9%
Negative40.9%
Written reviews38 reviews
Positive2.6%
Neutral5.3%
Negative92.1%

Odd Lock

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Blue Light Filter

Reported bugs

5 issues
  • App doesn't open
  • App keeps crashing
  • App doesn't work on Mac
  • Blank 'Trial Page' window
  • Free cancellation not working

Requested features

4 requests
  • Automatically turn on at login
  • Toggle on/off with shortcut key
  • Apply blue light filter to entire phone
  • More customization options

Odd Lock

Not enough reviews yet to summarise bugs or requests.

In-app purchases

5 purchases

Blue Light Filter

Subscriptions5
  • Weekly3 Days trial$4.997 Days
  • 1 month3 Days trial$6.991 Month
  • Blue Light Filter - Monthly3 Days trial$7.991 Month
Show 2 more
  • 1 year3 Days trial$24.991 Year
  • Annually$29.991 Year
None

Odd Lock

No in-app purchases

Questions

Is Blue Light Filter free?
Blue Light Filter is free to download, with in-app purchases available.
Is Odd Lock free?
Odd Lock costs $4.99, with no in-app purchases.
Which has better reviews, Blue Light Filter or Odd Lock?
Odd Lock is rated higher. Blue Light Filter averages 3.3 out of 5 from 137 ratings, while Odd Lock averages 5.0 from 3 ratings.
Do Blue Light Filter or Odd Lock have ads?
Neither Blue Light Filter nor Odd Lock shows ads.
Which is updated more often, Blue Light Filter or Odd Lock?
Blue Light Filter ships an update weekly, and Odd Lock every 2 weeks. Most recently, Blue Light Filter was updated on October 17, 2026 and Odd Lock on October 4, 2026.

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