Comparison

StudyTimer, TaskTimer vs OnLock

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

StudyTimer, TaskTimer

Features
Read full description

"StudyTimer" is a simple and stylish timer application that allows you to easily manage your work and study time by dividing multiple tasks. Main features: - Manage multiple tasks individually - Simple and modern black-and-white design - Offline support & timer continues even after exiting the app - Simple time management to reduce stress Start managing your time with "StudyTimer"!

About

OnLock

This app enforces focus by locking distracting applications at the operating system level. It uses AI to verify study sessions with photos, ensuring your progress is genuine and building an earned streak. Features include scheduled blocks, intent journaling, and focus intelligence insights.

Highlights
  • OS-level distraction blocking
  • AI-verified study sessions
  • Streak building
  • Scheduled recurring blocks
  • Intent journaling
  • Focus intelligence insights
  • Home screen widgets
Features
Read full description

Studying doesn't fail because you're lazy. It fails because Instagram is one swipe away, and willpower is not a strategy. OnLock is the block you can't talk yourself out of. When a session starts, OnLock locks your distractions at the operating system level using Apple's Family Controls. No "5 more minutes." No uninstall trick. The shield holds until you finish. But blocking is the easy part. The hard part is proving the work was real. Before any session counts toward your streak, OnLock's AI reviews a photo of what you did. No proof, no credit. THE SHIELD • Un-bypassable OS-level enforcement built on Apple's Family Controls • Locks the apps that derail you: social, games, browsers, anything • Holds through restarts, app deletion, and panic uninstalls • Schedule recurring blocks for the hours you always slip AI PROOF • Submit a photo of your notes, work, or finished problem set • AI verifies the session was genuine study before your streak counts • Catches the "I just sat there" sessions you'd rather forget • Builds a streak you actually earned THE INTERVENTION • A quiet pause before every session to ask if this is really study time • Journal your intent so distraction has to argue with your own words • Reflect after to see what is actually working THE WHY ON A TIMER • Plot your exams on a real countdown • Every session lands against the clock • See what each lost hour costs you FOCUS INTELLIGENCE • Learns your peak hours, worst blockers, and patterns • Tells you when to study and when to stop pretending • Your data, your insight, never shared ALWAYS ON • Home screen widgets in three sizes • Lock screen complications for glanceable streaks • Quick Study: one tap and you're locked in THE AESTHETIC A calm, editorial interface designed to feel nothing like the apps it replaces. No infinite scroll. No screaming notifications. No dopamine arcade. Just focus. PRIVACY • Screen time data stays on your device • Built on Apple's native Family Controls and Screen Time APIs • Photos for AI proof are reviewed and discarded • No tracking, no sale, no leak FREE Every feature above is included, free. No subscription, no upsells, no locked tools. Stop trying harder. Start being unable. OnLock. The focus you can't undo. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://onlock-api.joshuawang2048.workers.dev/legal/privacy

Screenshots

StudyTimer, TaskTimer2 screens
OnLock4 screens

Verdict

The call

StudyTimer, TaskTimer and OnLock are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ScorecardNo meaningful differences
StudyTimer, TaskTimer versus OnLock: the parameters behind the verdict, then further details
ParameterStudyTimer, TaskTimerOnLock
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequency—Every 5 weeks
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better16.0
Further details — not scored
Size0 MB48 MB
Age rating4+4+
DeveloperTomatoAppLabTing Ting Xu

In-app purchases

None

StudyTimer, TaskTimer

No in-app purchases

None

OnLock

No in-app purchases

Questions

Is StudyTimer, TaskTimer free?
StudyTimer, TaskTimer is free to download, with no in-app purchases.
Is OnLock free?
OnLock is free to download, with no in-app purchases.
Do StudyTimer, TaskTimer or OnLock have ads?
Neither StudyTimer, TaskTimer nor OnLock shows ads.

Other comparisons