Opal is the “Apple First” premium choice, though now expanding to other platforms. It is beautifully designed, heavily social, and deeply integrated into the iOS ecosystem. If you live on your iPhone and Mac, and love gamification (gems, leaderboards), Opal is the luxury pick.
Zentra is the data-driven, Android-focused alternative. It offers superior hourly analytics and strict mode exclusively for Android users. It’s significantly more affordable and focuses on personal insight rather than social comparison.
Quick Comparison
| Feature | Zentra | Opal |
|---|---|---|
| Best For | Android Analytics | Design & Gamification |
| Pricing | $3.99/mo | $8.29/mo (yearly) |
| Free Tier | Excellent | Good (Basic) |
| Key Feature | Strict Mode | Focus Gems & Social |
| Platforms | Android only | iOS, macOS, Android |
| Desktop | No | macOS App |
| Vibe | Minimalist & Data | Playful, Social, Luxury |
In-Depth Feature Breakdown
Gamification vs. Data
Opal treats screen time like a game. You earn “Focus Gems” for staying off your phone. You have a “Focus Score.” You can see leaderboards of your friends. This social pressure is highly effective for some users.
Zentra treats screen time like a metric — with heatmaps, charts, and raw numbers — then keeps you motivated with personal goal streaks and achievements. No leaderboards, no social pressure: it assumes you want to optimize your life, competing only with yesterday’s self.
Ecosystem
Opal is heavily optimized for Apple. It has a native Mac app that syncs with your iPhone. It uses the Screen Time API to block apps very effectively on iOS. It recently launched on Android as well, expanding its reach.
Zentra is Android-focused and offers features that iOS doesn’t allow, like strict mode that locks your blocking schedules down at the system level. If you’re in the Apple ecosystem, Opal is the clear choice. If you have an Android device, Zentra provides deeper integration through strict enforcement.
Cost
Zentra is priced for accessibility at $3.99/month.
Opal positions itself as a premium product, often costing nearly double that (depending on the plan), primarily targeting the high-end iOS market.
Final Verdict
Choose Zentra If…
- You have an Android phone: Zentra is Android-only with exclusive strict mode features.
- You love data: You want detailed hourly charts and heatmaps of your usage.
- You want value: You prefer a lower monthly cost for premium features.
- You prefer private motivation: You want personal streaks and achievements, without avatars, leaderboards, or social pressure.
Choose Opal If…
- You have an iPhone: Opal supports iOS; Zentra is Android-only.
- You live in Apple’s ecosystem: You want seamless sync between iPhone, Mac, and Watch.
- You need gamification: Earning “Focus Gems” motivates you to stay off your phone.
- You like competition: You want to see how you rank against friends on leaderboards.
- You value design: You want the most polished, beautiful app experience available, regardless of price.