Comparison

Prolog vs Study Timer Tracker

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

Head to head
About

Prolog

Features
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Unlike other screen time, focus, or productivity apps, Prolog delays access to applications by showing you your dreams and goals instead of completely blocking them. Have you ever tried using focus and screen time apps, but they didn’t always work? It only takes one relapse to fall right back into old habits, right? BENEFITS Stay focused on achieving your goals and dreams quickly. Save more than an hour a day effortlessly. Improve your physical and mental health in just 20 minutes. Increase your productivity at work or in your studies. Live without regrets. Prolog is the solution to get the life you want: Prolog solves our unhealthy relationship with our phones by making social media less important and putting your top priorities first so you don’t forget to work on your goals and dreams, and to actually achieve them. 92% of people fail to achieve their goals, and this is mainly due to two factors, both linked to social media. The first is that our brains are overloaded with information, leaving us unclear on what we really want. Social media makes this worse—many people do things not for themselves but because they’ve seen others doing it. They end up not liking it, quit, and the cycle repeats. The second reason is that social media distracts us; instead of working on ourselves to become better and achieve our goals and dreams, we find it easier to scroll for hours, wasting the most valuable thing in life: your time. But with Prolog, every time you open one of your favorite apps like YouTube, Instagram, TikTok, and others, it will first show you your goals and why you need to achieve them. This gives you time to think about whether it’s really worth going into the app. And if you still decide to use the app after seeing your goal, you can. And if you say, “I don’t know what my goals are,” don’t worry, we’ll assist you from the very beginning, from setting your goals to achieving them. You only have one life—avoid regrets and become the person you truly want to be. FEATURES Define, edit, and improve your goals with our help. Anti-Distraction View: Activates a page with your goals every time you launch one of your favorite apps (YouTube, Instagram, Facebook, Tinder, etc.). Don’t get stuck in the social media spiral. Notifications: Set a timer for how long you want to stay on an app, and once it’s over, the app will close, ensuring you don’t spend hours scrolling. Prolog is based on something that already works; we just made it better. It’s called 'one sec'. The effectiveness of 'one sec' was confirmed in a scientific study with the Max Planck Institute and the University of Heidelberg: app usage decreased by an average of 57% in the long term! "Prolog" uses shortcut automation to trigger an animation that shows your goals every time you open one of the configured apps (Instagram, Twitter, YouTube...). Thanks to this, you’ll think twice before opening social media and consider if it’s better to work on your goals instead. Your Privacy We do not save any of your data. We don’t have a database, and you don’t even need an email to use the app. All your information stays on your phone. You are the sole owner of your data with us. Unlike most companies, we do not sell any of your information. This app helps you reflect on your actions, thoughts, and feelings, breaking harmful social media habits through mindfulness.

About

Study Timer Tracker

Features
Read full description

Know exactly how much you study - and finally stay ahead. Studius is a distraction-free study tracker, focus timer, and Pomodoro app that turns scattered study sessions into real, measurable progress. Most students lose hours to guesswork and procrastination. Studius replaces "Did I study enough?" with a clear answer, every single day. TRACK EVERY MINUTE • Live study timer — watch your hours add up in real time • Daily streaks — build momentum and keep the chain alive • Activity heatmap — see your consistency at a glance • Color-coded progress — instantly know if you're on track or behind HIT YOUR GOALS • Daily, weekly & monthly targets that fit your schedule • Catch-up math — see exactly how many hours you need today • Progress alerts before you fall behind, not after STUDY SMARTER, NOT HARDER • Built-in Pomodoro timer for proven, focused work • Track deep-focus sessions separately from passive reading • Break tracking for better retention • Per-subject breakdown so no class gets neglected AI-POWERED INSIGHTS • Weekly review of your study patterns • Personalized tips to optimize how you learn • Smart reminders tuned to your own habits DESIGNED FOR FOCUS A clean, minimalist interface with light and dark modes. No social feeds, no noise, no distractions — just you and your goals. GO PRO • Unlimited time tracking • Pomodoro focus timer • Daily, weekly & monthly goals • Activity heatmap & streaks • Track up to 3 subjects • Unlimited, color-coded subjects • Smart reminders & knowledge-decay alerts • AI insights & advanced analytics • Export your data — perfect for academic advisors Whether you're protecting your GPA, prepping for finals, or applying to med school, Studius gives you the accountability to follow through. Stop guessing if you've studied enough. Start knowing. Download Studius and turn time tracking into better grades. Questions or feedback? anpr@outlook.com Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Prolog4 screens
Study Timer Tracker4 screens

Verdict

The call

The clearest difference is price: Prolog at Free against Study Timer Tracker's $1.99. Prolog also leads on in-app purchases (none vs 2) and update cadence (every 2 days vs every 3 months). On ads, 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

Prolog is free to download; Study Timer Tracker costs $1.99 up front. Study Timer Tracker sells 2 in-app purchases, starting at $0.99 per month. Prolog asks for nothing beyond the download.

UpkeepUpdate frequency

Prolog ships an update every 2 days, Study Timer Tracker every 3 months. The most recent releases landed on September 20, 2026 and October 5, 2026 respectively.

Scorecard3 real differences · 3 level
Prolog versus Study Timer Tracker: the parameters behind the verdict, then further details
ParameterPrologStudy Timer Tracker
PriceFree — better$1.99
Update frequencyEvery 2 days — betterEvery 3 months
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.6 — better18.6
Further details — not scored
Size55 MB7 MB
Age rating4+4+
DeveloperElever (CA)Aneesh Pradeep

In-app purchases

None

Prolog

No in-app purchases

2 purchases

Study Timer Tracker

Subscriptions2
  • Studius Pro Monthly7 Days trial$0.991 Month
  • Studius Pro - Annual7 Days trial$6.991 Year

Questions

Is Prolog free?
Prolog is free to download, with no in-app purchases.
Is Study Timer Tracker free?
Study Timer Tracker costs $1.99, and also offers in-app purchases.
Do Prolog or Study Timer Tracker have ads?
Neither Prolog nor Study Timer Tracker shows ads.
Which is updated more often, Prolog or Study Timer Tracker?
Prolog ships an update every 2 days, and Study Timer Tracker every 3 months. Most recently, Prolog was updated on September 20, 2026 and Study Timer Tracker on October 5, 2026.

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