Spark vs AppBlock
AppBlock is the strictest software blocker on Android: its Strict Mode can block the Settings app itself, along with recent apps, split screen and applications you reinstall to get around a block. Two things bound that strictness — the free tier caps Strict Mode at 24 hours, and AppBlock's support can issue a one-time code to disable it. Spark's answer is structural instead: locking is one tap, and unlocking means fetching a physical key and holding the phone against it, with five emergency unlocks for life. AppBlock is available today on Android, iOS and desktop browsers; Spark is not in the app stores yet.
Every figure below was read from AppBlock’s own site or store listing on 18 Sept 2026. Read on 18 Sep 2026, including the Indian Play listing. The rupee figures are Play's in-app-purchase range for the whole app, not the price of any single plan — no per-tier rupee price is published by the vendor. Prices change — check the source links before deciding. What this page says about Spark was last corrected on 13 Sept 2026.
At a glance
Side by side
| Dimension | AppBlock | Spark |
|---|---|---|
| What gates the unlock | A condition you chose: PIN, charger, timer, cooldown or a trusted person | Holding the phone against a key you left in another room |
| Strongest mode | Strict Mode — blocks Settings, recents, split screen, reinstalls | Strict mode, which also switches off the emergency unlocks |
| The escape hatch | Support issues a one-time code; free tier expires after 24 hours | Five emergency unlocks, for life, with no network needed |
| Price in India | Play listed in-app purchases from ₹25 to ₹11,700 on 18 Sep 2026 | Free app; the key is bought once, in rupees quoted ex-GST |
| Platforms | Android, iOS, desktop browser extensions | iOS 17+ and Android 12+ — not in the app stores yet |
| Who holds the way back in | You, or AppBlock's support team | Nobody — it is an object, not a credential |
AppBlock
How AppBlock works
AppBlock is a cross-platform app and website blocker from MobileSoft, a Czech company, driven by scheduled profiles and available on Android, iOS and as browser extensions.
On Android it combines the accessibility service with device administrator permission, which is what lets its Strict Mode resist being switched off — the vendor documents blocking the Settings app, recent apps, split screen and reinstalled applications. On iPhone it uses Apple's Screen Time framework, so it is bound by the same limits as every other iOS blocker.
Platforms
Android, iOS, and extensions for Chrome, Edge and Brave.
Pricing
A free tier plus Premium in monthly, yearly and one-time lifetime forms. The vendor's premium page lists the tiers without amounts; on the Indian Play Store on 18 Sep 2026 the listing showed in-app purchases from ₹25 to ₹11,700, which is Play's range for the app rather than a price for any one plan.
How hard it is to get around
Hard by software standards, and not absolute. Strict Mode is ended by whichever condition you chose — a PIN, a charger, a timer, a cooldown, a schedule or a trusted person's approval — and, if none of those will serve, AppBlock's support issues a one-time code that disables it, deliberately easier the first time and harder afterwards. On the free tier Strict Mode expires after 24 hours regardless. Its Block Recent Apps feature is available only on some manufacturers' phones, which tells you the gap it patches remains elsewhere.
The difference that matters
Both admit the same problem; the answers differ
Read AppBlock's help pages and you are reading a long, honest catalogue of the ways a determined person gets past a blocker that lives on the phone: through Settings, through the recents switcher, through split screen, by uninstalling, by reinstalling. Each feature exists because somebody did that. It is the most thorough software answer to the problem anybody has built.
It is still an answer inside the box. Every one of those defences is code running on a device you administer, which is why the last line of defence is a human being at AppBlock deciding whether to send you a code. Spark moves the credential out of the box entirely: the thing that ends a session is an object in another room, and nobody at Spark can unlock your phone for you because there is nothing for us to unlock.
Which is better depends on what you are defending against. If your failure mode is fiddling with Settings at midnight, AppBlock's Strict Mode genuinely addresses that and costs nothing to try. If your failure mode is that you will eventually find the legitimate-sounding reason — and take the two minutes to email support for a code — then the deciding factor should be distance, not cleverness.
To be fair
When AppBlock is the better choice
Depth and coverage. Nothing else on Android blocks Settings, recents, split screen and reinstalls in one product, and few blockers span phone, tablet and desktop browser with one set of profiles. Its condition-based unlocks — charger plugged in, a location, a Wi-Fi network, a trusted person's approval — are genuinely inventive, and the free tier is usable rather than a demo.
Choose AppBlock if
- You want something today, from an app store, on more than one platform. AppBlock ships; Spark does not yet.
- You need one blocker across Android, iPhone and a desktop browser with shared profiles.
- You want unlock conditions that are contextual rather than physical — on the charger, at a location, on a given network.
- You would rather have an accountability partner approve unlocks than keep a physical object somewhere inconvenient.
- You refuse to buy hardware, which is an entirely reasonable position.
Documented limitations
- On the free tier, Strict Mode lasts a maximum of 24 hours.
- Support can issue a one-time code that disables Strict Mode — a door that exists by design, however sensibly it is operated.
- Block Recent Apps is limited to certain manufacturers' phones, so that route remains open on others.
- On iPhone it is bound by Apple's Screen Time framework, which constrains what any blocker can do there.
- No per-tier rupee price is published on the vendor's own site; Play shows only a range.
Sources
Questions
AppBlock, answered
Can AppBlock be bypassed?
Its Strict Mode is the hardest software block on Android — it can block the Settings app, recents, split screen and reinstalled apps. The documented ways out are the unlock condition you set, and a one-time code from AppBlock's support. On the free tier, Strict Mode also expires after 24 hours.
Is there a free alternative to AppBlock?
Android's own Digital Wellbeing is free and worth exhausting first. Spark's app has no subscription, but it is not free to use — it locks nothing until you have bought and paired a key.
How much does AppBlock cost in India?
The vendor does not publish rupee amounts per tier. On 18 Sep 2026 the Indian Play Store showed in-app purchases ranging from ₹25 to ₹11,700 for the app as a whole, which includes a lifetime option. Check the price inside the app before buying.
AppBlock or a physical key?
If you have not tried a strict software blocker, try AppBlock first — it is free to start and genuinely good. If you already know you will find a way through any switch that is within reach, the useful difference is that a key is not within reach.
Read next
Related reading
Compare something else
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Freedom blocks Mac, Windows, iPhone and Android in one session, and wins if your problem is a laptop. On a phone, the Spark key changes the comparison.
Read the comparisonApple Screen TimeSpark vs Apple Screen Time
If you set your own Screen Time passcode, you can always get past your limits. The two fixes that work: give the code away, or move the unlock to a key.
Read the comparisonCold TurkeySpark vs Cold Turkey
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Read the comparisonkSafeSpark vs a timed phone lock box
A timed phone lock box like kSafe takes the whole phone: no calls, no early release. The Spark app blocker locks only the apps you pick. When a box wins.
Read the comparisonStay FocusedSpark vs Stay Focused
Stay Focused is an Indian-built Android blocker with per-app quotas and rupee pricing. Spark puts the unlock on a physical key. An honest comparison.
Read the comparisonGoogle Family LinkSpark vs Google Family Link
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Read the comparisonFacts checked 18 Sept 2026 · Spark’s side corrected 13 Sept 2026
Locking is one tap. Unlocking costs you a walk.
No subscription. Buy a Spark once and sign in to pair it; after that, locking is one tap, even offline. Unlocking means fetching the key and holding your phone against it — which turns a bad moment into a walk.