Comparison

MistakeLab vs Study On

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

Head to head
About

MistakeLab

Features
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Stop making the same mistake twice. MistakeLab is the ultimate wrong answer journal (error log) and spaced repetition assistant engineered for elite students preparing for high-stakes competitive exams. Whether you are studying for the SAT, ACT, GMAT, GRE, LSAT, MCAT, CFA, or college finals, keeping a structured "error log" is the single most effective strategy recommended by top-scoring students (99th percentile) worldwide. MistakeLab automates this process, transforming your failures into exam-day breakthroughs. ▸ SNAP & EXTRACTION WITH ON-DEVICE OCR Stop wasting precious study time typing out long prompts. Instantly take a photo of any failed question from a prep book, worksheet, or computer screen. Apple's native OCR (Live Text) extracts the question text locally in seconds, creating a clean record automatically. ▸ DIAGNOSE THE ROOT CAUSE (COGNITIVE TAXONOMY) To fix a mistake, you must understand why you made it. Classify your errors under 5 distinct cognitive categories: • Content Gap: You did not know the underlying formulas or rules. • Careless Mistake: You knew the concept but made a silly calculation slip. • Misread: You missed a crucial word (e.g. "except", "not") or misread the question stem. • Concept Trap: You fell for a logical trap or distractor option. • Time Pressure: You ran out of time or panicked under the clock. Add your custom notes and actionable remediation rules (lessons learned) to ensure you don't repeat them. ▸ SCIENTIFIC SPACED REPETITION (SM-2 SRS) Reviewing a correction immediately after seeing it creates a false sense of fluency. Powered by a local adaptation of the SuperMemo-2 (SM-2) algorithm, MistakeLab schedules review sessions at mathematically optimal intervals (Day 1, Day 3, Day 7, etc.) based on your performance. • Daily Review Queue: Easily work through questions scheduled for revision today. • Fluid gestures: Swipe right to master, swipe left to keep in queue. • Rich haptic feedback via CoreHaptics for an engaging, physical review loop. ▸ ANALYZE YOUR WEAKNESS PATTERNS Stop guessing what to study. The analytics engine uses native Swift Charts to visualize: • Cognitive Failure Breakdown: Check if you suffer more from careless slips or core concept gaps. • Topic Weakness Matrix: Find which exam sections (e.g. Quantitative, Reading Comp) have the highest error density. • Learning Curve: Monitor your progress as you turn active errors into mastered concepts. ▸ 100% OFFLINE & PRIVACY FIRST Your study data is yours alone: • 100% Offline: No account signups, no external servers, no internet connection required. Review anywhere, even in library basement study rooms. • Zero Data Collection: We do not collect, store, or transmit your name, text, or photos. • PDF Booklet Export: Generate a clean, formatted PDF of your mistakes to print out or share with your tutor. Eliminate your blind spots, boost your score, and walk into your exam room with absolute confidence. Start your error journal with MistakeLab today. Support: contact.devotellix@gmail.com

About

Study On

Features
Read full description

Your perfect study mate, Study On! The most intuitive and complete study planner app for everyone running toward their goals. Gather your scattered school timetables, academy schedules, and daily assignments all in one place! Our smart timer keeps you from getting distracted, and the ranking system with friends will definitely keep you motivated. With Study On, boring study sessions turn into an exciting quest. [ Study On's Special Core Features ] 1. Smart Calendar & Timetable at a Glance • Clearly separate and manage your regular school classes and academy/tutoring schedules. • Flexibly adjust everything from your macro exam plans to today's detailed timeline with support for monthly, weekly, and daily views. • Easily register and manage recurring academy schedules or regular study sessions all at once. 2. Block Distractions! Pure Focus Timer • Accurately measure your "pure" focus time today with our intuitive stopwatch and timer features. • Helps you put your smartphone away and completely immerse yourself in your studies. • Your daily measured focus time is meticulously recorded in the calendar, allowing you to review and reflect on your study patterns anytime. 3. ZERO Missed Assignments! Today's Quests & D-Days • Automatically categorizes all approaching deadlines—like performance assessments, school homework, academy assignments, and materials to prepare—into the "Today's Quests" list. • Maintain your focus by checking the remaining days for important midterms, finals, mock exams, and college entrance exams every day through the D-Day banner on the main dashboard. • Convert what you've learned into long-term memory with the review quest feature, tailored perfectly to the Ebbinghaus Forgetting Curve. 4. Weekly Study Rankings with Friends • Register study mates in real-time by sharing your unique friend code. • A real-time TOP 3 ranking among friends is displayed on your dashboard based on this week's "accumulated study time." • Get twice the motivation and positive study stimulation compared to studying alone! 5. Customize Your Own Aesthetic Planner • Earn coins and EXP (Experience) by checking in daily, completing quests, and achieving your target study times! • Use your collected coins in the shop to unlock various planner background textures (like grid paper, vintage drawing paper, etc.). • Decorate your one-and-only, unique planner with a variety of free custom fonts and aesthetic stickers. 6. Perfect Sync Between iPhone & iPad (iCloud Support) • Lightly check your quests on your iPhone while on the go, and set up in-depth study plans on your iPad's wide screen at your desk! • Supports real-time syncing between devices via Apple iCloud and Firebase, providing the optimal, seamless study environment anytime, anywhere. 7. Quick Memo to Capture Brilliant Ideas • Provides a "Quick Memo" canvas accessible right from the home screen without any complex steps. • Instantly type and safely store ideas that suddenly pop up while studying, important appointments, or urgent notes. Study On sincerely cheers on your fierce and hardworking days. Download now and start your very own shining study record!

Screenshots

MistakeLab4 screens
Study On4 screens

Verdict

The call

The clearest difference is ads: MistakeLab at none against Study On's shown. On price, in-app purchases, device support and iOS requirement 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. Neither carries in-app purchases, so what you see is what you pay.

Scorecard1 real difference · 5 level
MistakeLab versus Study On: the parameters behind the verdict, then further details
ParameterMistakeLabStudy On
PriceFreeFree
Update frequency—Every 2 weeks
AdsNo — betterYes
In-app purchasesNoNo
DevicesiPhoneiPhone, iPad — better
Requires iOS17.0 — better17.6
Further details — not scored
Size5 MB113 MB
Age rating4+4+
DeveloperTRIMECH DhakerMoon Su Choi

In-app purchases

None

MistakeLab

No in-app purchases

None

Study On

No in-app purchases

Questions

Is MistakeLab free?
MistakeLab is free to download, with no in-app purchases.
Is Study On free?
Study On is free to download, with no in-app purchases.
Do MistakeLab or Study On have ads?
Study On shows ads; MistakeLab does not.

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