Sparky vs Opal: Which Screen Time App Actually Fits You
Full disclosure: we make Sparky, so we have a stake in this comparison. We’re also trying to write the version we’d want to read if we were choosing, which means naming where Opal genuinely wins, not just where it doesn’t.
The core difference in one line
Opal is a blocker with a timer: you set Focus Rules, start a session, and your chosen apps stay locked until the session ends. Sparky is an earning system: your apps stay locked until you finish something small and real first, water, a walk, a chapter, and the lock opens because you paid for it, not because a clock ran out.
Both approaches use Apple’s Screen Time framework (FamilyControls and ManagedSettings) under the hood, so neither is a workaround, and both are subject to the same iOS-level limitation: if you remove the app’s Screen Time permission, the block stops. That’s not a flaw specific to either app, it’s how the underlying API works.
What Opal does well
Opal covers more ground than Sparky does. It runs on iOS, Android, and macOS, so a single Focus Rule can lock your phone and your laptop together, which Sparky can’t do (iPhone only, for now). It also has a Deep Focus mode for sessions you commit to with zero negotiation, useful when you want a wall, not a gate, and an Opal Score that rolls sleep, focus, and rest into one wellbeing number.
If your problem is “I need my laptop and phone locked at the same time during work,” or “I want a session I genuinely cannot back out of,” Opal’s model fits that better than an earnable gate ever will. An earnable gate is, by design, still a gate you can open.
Where the two pull apart
- Cost of access. Opal’s free tier gives you one recurring focus session; the features people actually want (Deep Focus, unlimited rules) sit behind Opal Pro at $19.99/month, $99.99/year, or a $399 lifetime option. Sparky starts free with five habit types and only asks you to pay for more habits and a monthly recap, not for the core gate itself.
- What breaks the loop. Opal’s timer ends the same way every time: the clock hits zero and the app unlocks, whether or not anything in your day changed. Sparky’s gate opens because you did something, so a heavy scroll day is also a day you drank water or read a chapter. The friction is the same size, but what you get for it is different.
- The failure mode. A pure timer or block has one failure mode: you disable it because it fought you all day. There’s real evidence that a brief, one-time pause before opening an app, the same mechanism an earning gate relies on, made people abandon 36 percent of their app-opening attempts and cut opening attempts by 37 percent over six weeks, according to a 2023 PNAS study by Grüning, Riedel, and Lorenz-Spreen. A gate that also gives you something back, instead of just costing you a moment, is trying to survive that same failure mode for longer.
Which one fits you
Pick Opal if you need your phone and your laptop locked together, you want a session with zero override option, or the Opal Score’s sleep/focus/ rest tracking is genuinely useful to you.
Pick Sparky if you’re on iPhone only, you’d rather earn your way back in than watch a timer, and you want the unused minutes from a session you ended early to bank for later instead of just disappearing. We compared the whole earned-time category, not just Opal, in our guide to apps that make you earn screen time.
Neither model is wrong. A hard block is the right tool for a two-hour deep work session. An earning gate is the right tool for the twenty other hours a day when you still need your phone, just not on autopilot. If you want to try the earned version, Sparky is free to start.
Sparky turns small habits into screen time you earn. Download it free on the App Store.