lockrMail
Protect your inbox and optimize your browsing
Opal: Screen Time Control
The fun, free Screen Time app to improve your focus.
Updated February 2026
| lockrMail | Opal: Screen Time Control | |
|---|---|---|
| Rating | 5.0★ | 4.8★ |
| Reviews | 8 | 5 |
| Pros | 13 | 0 |
| FactScore™ | 47.7 | 37.4 |
FactScore™ Comparison
FactScore™ weighs both quality (rating) and popularity (reviews) for a fairer ranking than stars alone.
Pros & Cons
Only in lockrMail — Pros
Chrome extension Control over inbox Discount code notifications Easy to use Email management Automated filters Coupon code integration Loyalty program management Newsletter management No new inbox Online registration management Productivity improvement Site registration managementBoth tools — Pros
—Only in Opal: Screen Time Control — Pros
No unique pros listedOnly in lockrMail — Cons
—Both tools — Cons
—Only in Opal: Screen Time Control — Cons
—Details
| lockrMail | Opal: Screen Time Control | |
|---|---|---|
| Categories | Email clients, Safety and Privacy platforms, Chrome Extensions | Safety and Privacy platforms, Apps for kids |
| Platforms | Web | Web · iOS · Android |
| Became Popular | May 25, 2021 | January 26, 2021 |
| Website | lockrmail.com | www.opal.so |
Who Should Pick Which?
Choose lockrMail if...
- Chrome extension
- Control over inbox
- Discount code notifications
Choose Opal: Screen Time Control if...
- No unique pros listed
With a FactScore™ of 47.7 vs 37.4, lockrMail leads in community reception. lockrMail uniquely offers Chrome extension and Control over inbox, while Opal: Screen Time Control stands out for No unique pros listed.
What Users Say
lockrMail
5 Stars! I first used Lockr to filter out all the unwanted promotional emails, but the chrome extension takes the product to a whole new level. The extension conveniently populates the coupon codes...
LockrMail is a 5-star product and solution to a daily problem growing onus consumers like kudzu. There are moments I consider a) not buying from a merchant or b) stopping my browsing journey becaus...
I’ve been a supporter and user of lockrMail since day 1. I do like that it’s not necessarily a new inbox but also very excited to be able to read emails directly in the extension. Love the approach...
Opal: Screen Time Control
I really like Opal for helping me stay focused during the workday. But also for the opposite, to being able to relax on the weekend and not being allowed to visit apps like Slack, Gmail etc. Has re...
The difference is Opal actually works. I thought maybe it would be gimmicky but within a few days it forever changed my relationship with my phone. It creates the right amount of friction to keep y...
Love it! 😻 Been using the app for year+ and convinced easily 10+ people to use it. It's a game changer for schools!
Related Comparisons
Frequently Asked Questions
Which is better, lockrMail or Opal: Screen Time Control?
Based on FactScore™, lockrMail leads with a score of 47.7 vs 37.4. lockrMail has a higher rating of 5.0★ compared to 4.8★.
What are the pros of lockrMail compared to Opal: Screen Time Control?
lockrMail uniquely offers: Chrome extension, Control over inbox, Discount code notifications, Easy to use, Email management.
What are the pros of Opal: Screen Time Control compared to lockrMail?
Opal: Screen Time Control uniquely offers: No unique pros listed.
Is lockrMail better rated than Opal: Screen Time Control?
lockrMail is rated 5.0★ from 8 reviews. Opal: Screen Time Control is rated 4.8★ from 5 reviews.
What is the FactScore™ of lockrMail and Opal: Screen Time Control?
FactScore™ weighs rating and review volume together. lockrMail scores 47.7 and Opal: Screen Time Control scores 37.4.
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