Quick answerOpal is the iOS / macOS leader in screen-time apps, $99.99/year, $10M ARR, no Android product. Linden is Android-first, $79.99/year, and adds an AI gatekeeper Lumi who argues with you before unlocking apps. If you're on Android and tired of static block screens that stop working after week 3, Linden is the natural choice.
The two-sentence summary
Opal is the most polished iOS screen-time app out there — beautiful design, deep analytics, no Android version, and a price tag to match. Linden is what the Android side of that looks like, plus an AI gatekeeper named Lumi who turns each unlock attempt into a conversation instead of a wall.
Side-by-side
| Linden | Opal | |
|---|---|---|
| Platform | Android (iOS coming) | iOS, macOS |
| Annual price | $79.99 | ~$99.99 |
| Monthly price | $7.99 | Varies (~$8.33 effective) |
| Free trial | No (by design) | 7-day free trial |
| AI conversation | Yes — Lumi (6 personalities) | No |
| Static block screen | — | Yes |
| Analytics dashboard | Hours saved + streaks | Deep analytics — Opal's strength |
| Hardcore mode | Yes — locks for hours if you lie | Deep Focus mode (Pro) |
| Friend codes / accountability | Yes — daily-rotating 6-digit code | — |
| Personality customization | 6 voices | — |
| Anti-habituation design | Lumi rotates intervention style | Static intervention |
| Founder | Solo founder | Team of ~11 (Speedinvest-backed) |
| Russian-language UI | Phase-2 plan | — |
What Opal does better
- Analytics depth. Opal's screen-time charts and "phone life" reports are genuinely nice to look at. We don't try to match this; Linden's stats are minimal by design.
- iOS / macOS coverage. Opal works across iPhone, iPad, and Mac. If you live on Apple silicon, Opal's cross-device blocking is hard to beat right now.
- Brand maturity. Opal has had years and a real marketing team behind it. Their TikTok presence, creator partnerships (Olivia Unplugged, Ali Abdaal), and press coverage are hard to touch.
Where Linden is the answer
- Android-first. Opal has no Android product and hasn't signaled one coming. If you're on Android, Linden isn't an alternative — at this price and quality, it's the only option in this category.
- The block actually adapts. Static block screens habituate. Lumi rotates intervention style — different question, different angle, different personality if you've picked one. The friction stays fresh past week 3.
- You have to talk back. The single biggest behavioral difference. Saying out loud "I want TikTok because I'm bored" is, for many users, the moment the urge ends. Opal does not require articulation.
- Friend codes. External accountability that survives weak-willpower moments. No equivalent on Opal.
- Lower price. $79.99/year vs $99.99/year — ~20% cheaper.
Try Linden
Linden is $7.99/month or $79.99/year on Android. No free trial — Lumi is for people who already know what doesn't work.
Verdict — who should pick which
- Pick Opal if you're on iPhone/iPad/Mac, you primarily want analytics and a polished cross-device experience, and the static block screen still works for you.
- Pick Linden if you're on Android (no choice anyway), or you're on iOS but you've been on Opal for 3+ months and the wall has become invisible to you.
- Pick neither if you've never paid for a screen-time app and just want to see if the category works. Try the free version of ScreenZen for two weeks first; if it doesn't change anything, then come back here.
FAQ
- Is Linden cheaper than Opal?
- Yes. Linden is $79.99/year vs Opal's ~$99.99/year — about 20% less. Monthly is also slightly cheaper at $7.99/month.
- Does Opal work on Android?
- No. Opal is iOS and macOS only as of 2026. This is the most-asked question in Opal's reviews and community forum.
- What does Linden have that Opal doesn't?
- An AI gatekeeper conversation. Opal blocks apps with a static screen and offers analytics afterwards. Linden replaces the static screen with a real-time conversation with Lumi (an AI character) — you have to articulate why you want the app, and Lumi often says no.
- Should I switch from Opal to Linden?
- If you're on Android, you can't be on Opal anyway. If you're on iOS and Opal works for you, stay — there's no urgent reason to switch. iPhone version of Linden is in development.