Comparison

Study Lock vs StudyIn

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

Head to head
About

Study Lock

This app blocks distracting applications until you complete study sessions. It uses AI to generate personalized quizzes and flashcards from your course materials, rewarding you with screen time for correct answers. Track your progress with detailed statistics and spaced repetition.

Highlights
  • AI-generated quizzes and flashcards
  • Import course material from PDF, photos, text
  • App blocking via Screen Time integration
  • Spaced repetition learning algorithm
  • Oral analysis with AI evaluation
  • Progress tracking and statistics
  • Pomodoro timer with Live Activity
Features
Read full description

Study Lock blocks your distracting apps until you study. Import your courses from PDF, photos, or plain text, and the app generates personalized quiz questions, flashcards, and oral analysis exercises, all powered by AI. How it works: Import your course material in any format. AI instantly creates quiz questions, flashcards, and oral analysis prompts covering the full content. Select which apps to block using Screen Time. When you try to open a blocked app, Study Lock asks you to study first. Answer correctly and earn screen time as a reward. The harder the question, the more time you unlock. Oral analysis lets you explain concepts out loud while AI evaluates your understanding and gives you a detailed correction. Every question follows a spaced repetition algorithm so you focus on what you actually need to review. Your progress is tracked with streaks, mastery percentages, and detailed session statistics. Study Lock is built for students who want real results without relying on willpower alone. It turns the time you spend on your phone into structured study sessions. Key features: AI-generated quizzes, flashcards, and oral exercises from any course material. PDF, photo, and text import with full-document coverage. Screen Time integration to block and unblock apps based on study performance. Spaced repetition scheduling adapted to your level. Oral analysis with speech recognition and AI-powered evaluation. Pomodoro timer with Live Activity support. Detailed statistics including streaks, accuracy, study time, and earned screen time. Works in any language. No ads. No gimmicks. Just a simple system that works. Privacy Policy: https://studylock.framer.website/privacy-policy Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

StudyIn

This app helps students prepare for standardized tests by blocking distracting applications. Users answer exam-specific questions to earn back screen time, reinforcing learning through retrieval practice and adaptive difficulty.

Highlights
  • App blocking for distracting applications
  • Exam-specific practice questions
  • Adaptive difficulty levels
  • Mastery tracking for study topics
  • Study and casual modes
  • Exam countdown and session history
Features
Read full description

StudyIn is an SAT/ACT app blocker designed specifically for students preparing for the Digital SAT/ACT. Block distracting apps like TikTok and Instagram, study, then pass Math or Reading & Writing questions to earn your screen time back. Unlike ordinary screen-time blockers, StudyIn combines app blocking with exam-specific questions, adaptive difficulty and mastery tracking. Block distracting apps, study, then prove you've studied by answering questions that are subject-specific and are the type that actually appear on your exam. Pass? You've earned your screen time! Guilt-free scrolling, and no more nagging feeling in the back of your head. Fail? No more coddling, your future is at stake here. Get back to studying and come back once you know your stuff. You can talk yourself into fifteen more minutes. You can't talk yourself into knowing the answer. HOW IT WORKS 1. Choose the apps that have you scrolling for hours. 2. Customise a study session to fit your needs. 3. Actually do some studying (this one is on you). 4. Answer questions from your real syllabus and see if you've earned access to your apps. 5. Pass, and your apps open for a set window. Enjoy your break. Fail, and the shield stays up. There is no negotiating here. A question doesn't care how tired you are or how much 6. you deserve a break. 7. Get back to studying. Repeat this pattern and see a healthy habit form. 8. Ace your exam! 9. Delete StudyIn or use us for your next exam. THE QUIZ IS THE STUDYING This is the part people don't expect. Twenty years of research on retrieval practice found that testing yourself beats rereading and highlighting, which are the two things almost everyone does (Roediger & Karpicke, 2006). Are you starting to get it? The thing standing between you and that dopamine hit is also the thing improving your score. Now you are training yourself to WANT to study. WHAT'S INSIDE - An OS-level shield on any app you choose, built on Apple's Family Controls framework, so it holds across the whole device instead of inside one app. - Questions from real syllabuses: SAT Reading & Writing, SAT Math, ACT Mathematics, ACT English & Reading. - Adaptive difficulty across four levels. Questions get harder as you improve, and the ones you got wrong come back until you have them locked down. - Per-module mastery tracking, so you can see which topics are costing you marks. - Different modes. Study mode for exam season, interval-gated. Casual mode for maintenance, with lives and a daily unlock budget. - An exam countdown, full session history, and a study companion that reacts to how the session is going. WHY IT COSTS What makes this study system work is the questions we put in front of you at quiz time. Too easy, and you don't learn anything. Too hard, and you lose motivation to study. That's why we use a difficulty-adaptive algorithm built on thousands of past-paper questions. This ensures concepts you have learnt are being reinforced, while also pushing the limits of your understanding. Private SAT tutoring runs $45 to $400 an hour. A year of StudyIn costs less than one of those hours and will help you build a study structure across your entire independent study. Unlike a generic free blocker, StudyIn will actually make you study. Psychological research and behavioural economics studies show time and time again that people who pay for a product, service, or program exhibit stronger commitment, completion rates, and perceived value compared to those who receive the same item for free. By paying, you are making a commitment to yourself about your intentions for studying. StudyIn is a subscription with weekly, monthly and annual plans. There is no free version and no ads. Every plan starts with a 7-day free trial, and you are not charged if you cancel before it ends. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Study Lock4 screens
StudyIn4 screens

Verdict

The call

The clearest difference is rating: StudyIn at 5.0 against Study Lock's 4.8. Study Lock's advantage is ratings volume (10 vs 1). On price, update cadence, ads and in-app purchases there is nothing between them.

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. Study Lock sells 2 in-app purchases, starting at $5.99 per month and StudyIn sells 6 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

StudyIn holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Study Lock has 10 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Study Lock ships an update every 10 days, StudyIn every 2 weeks. Both last shipped on October 24, 2026.

Scorecard2 real differences · 8 level
Study Lock versus StudyIn: the parameters behind the verdict, then further details
ParameterStudy LockStudyIn
PriceFreeFree
Rating4.8 (10 ratings)5.0 (1 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings10 — better1
Update frequencyEvery 10 days — betterEvery 2 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFree with in-app purchases
DevicesiPhoneiPhone, iPad — better
Requires iOS17 — better18.6
Further details — not scored
Size42 MB32 MB
Age rating4+4+
DeveloperEthan DietrichPierce Duffy

Customer experience

Study Lock

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

StudyIn

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

2 purchases

Study Lock

Subscriptions2
  • Monthly Pro$5.991 Month
  • Annual Pro3 Days trial$34.991 Year
6 purchases

StudyIn

Subscriptions6
  • Starter7 Days trial$4.997 Days
  • Focused7 Days trial$8.991 Month
  • Sprint7 Days trial$14.992 Months
Show 3 more
  • Term Subscription7 Days trial$19.993 Months
  • Half-Year Subscription7 Days trial$30.996 Months
  • Dedicated7 Days trial$49.991 Year

Questions

Is Study Lock free?
Study Lock is free to download, with in-app purchases available.
Is StudyIn free?
StudyIn is free to download, with in-app purchases available.
Which has better reviews, Study Lock or StudyIn?
StudyIn is rated higher. Study Lock averages 4.8 out of 5 from 10 ratings, while StudyIn averages 5.0 from 1 ratings.
Do Study Lock or StudyIn have ads?
Neither Study Lock nor StudyIn shows ads.
Which is updated more often, Study Lock or StudyIn?
Study Lock ships an update every 10 days, and StudyIn every 2 weeks. Most recently, Study Lock was updated on October 24, 2026 and StudyIn on October 24, 2026.

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