Comparison

PaperDue vs Studva

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

Head to head
About

PaperDue

Never miss a crucial submission deadline for AI research conferences. This app provides live countdowns, smart notifications, and conference rankings to help academics stay organized and focused on their work.

Highlights
  • Live countdown tracker for hundreds of conferences
  • Smart reminder notifications
  • CORE & CCF conference rankings
  • Dynamic Island countdown ticker
  • Home & Lock Screen widgets
  • Timeline & calendar view
  • Multi-timezone support
Features
Read full description

PAPERDUE — NEVER MISS A SUBMISSION DEADLINE Your next breakthrough paper deserves a shot. Don't let it miss the deadline. PaperDue is the essential deadline tracker built for AI researchers, PhD students, and academics who live and breathe conference submissions. Track CVPR, NeurIPS, ICML, ICLR, ACL, AAAI, ECCV, and hundreds more — all in one beautiful, distraction-free app. ———————————————————— WHY RESEARCHERS CHOOSE PAPERDUE ———————————————————— Conference season is brutal. You're juggling abstract deadlines, full-paper windows, rebuttal periods, and camera-ready dates — across dozens of venues simultaneously. Missing a deadline doesn't just mean disappointment; it means waiting another year. PaperDue keeps every critical date front and center, so you can focus on the science. —————— FEATURES —————— - LIVE COUNTDOWN TRACKER — Browse hundreds of AI, CV, NLP, and ML conferences sorted by urgency. Real-time day countdowns, second-precise timers for your followed venues. - SMART NOTIFICATIONS — Custom reminder alerts at 14, 7, 3 days or the day of — configured independently for abstract and full-paper deadlines. - CORE & CCF RANKINGS — Every conference tagged with its CORE (A*, A, B, C) and CCF (A, B, C) ranking. Filter instantly to surface only the venues that match your impact target. - DYNAMIC ISLAND COUNTDOWN — When a deadline enters the final 24 hours, a live ticker activates in the Dynamic Island. The most urgent alert on your phone. - HOME & LOCK SCREEN WIDGETS — Glance at your next deadline without opening the app. Multiple sizes with live countdown bars. - TIMELINE & CALENDAR — Visualize your full submission roadmap in a scrollable timeline or monthly calendar, with one-tap export to Apple Calendar. - MULTI-TIMEZONE SUPPORT — Local time, UTC, AoE, or any fixed offset. Essential for international submissions. ———————————— DESIGNED FOR FOCUS ———————————— No clutter. No social feed. No noise. The dark navy interface keeps your eyes comfortable during late-night writing sessions. —————————————— YOUR COMPETITIVE EDGE —————————————— The researchers who get accepted aren't always the ones with the best ideas — they're the ones who submitted on time, without the last-minute panic. Download free. Upgrade when you're ready.

About

Studva

Transform focus hours into measurable, shareable achievements. This app turns study or work sessions into verified activities, complete with leaderboards and community support. Track progress, block distractions, and discover your peak productivity times.

Highlights
  • Verified focus sessions with start/end photos
  • Distraction blocking by pausing apps
  • Personalized productivity coaching
  • Social feed with friend interactions
  • Location-based leaderboards
  • Exportable session data (CSV)
Features
Read full description

Studva is the Strava of deep work: turn your focus hours into wins you share. Whether you're cramming for an exam, pushing a side project forward or working remotely: staying focused alone is hard. Studva turns every work session into a measured, verified, social activity - just like a workout. HOW IT WORKS 1. Arrive - settle in wherever you work: library, campus, café, office. 2. Start - take a photo at the start of your session, the timer begins. It becomes half of your before/after. 3. Focus - stay locked in, the app counts distractions. 4. Share - post your before/after with your stats baked in: proof of what you got done. Friends cheer you on with a Focus and you climb the leaderboards together. VERIFIED SESSIONS Start photo, end photo, on-site presence verified by GPS. Your stats are genuine - and so is everyone else's. No fake timers in the leaderboards. YOUR TIMER, ALWAYS IN SIGHT Your time keeps running on your lock screen - and in the Dynamic Island on iPhones that have one. Pause or finish your session without even reopening the app. BLOCK WHAT DISTRACTS YOU Pick the apps to pause during your sessions: they stay out of reach until the timer ends. Studva never sees which ones you chose - the selection stays on your phone. YOUR PRODUCTIVITY COACH Every week, Studva analyzes your sessions and tells you when and where you perform best: your peak time slot, your home base, your trends. Everything is computed on your phone. A COMMUNITY THAT PUSHES YOU - A feed of your friends: cheer with a Focus, comment, chat in private messages - Clubs: your class, your team or your friends, with built-in chat - Weekly league with friends, challenges and trophies to unlock - Streaks: stack up the days and keep your run alive 560,000 PLACES ON THE MAP Libraries, campuses and study spots worldwide. Every place has its own leaderboard: become the reference of your spot. YOUR STATS, YOUR PROGRESS Time per subject or project, personal records, weekly goals, exam and deadline countdowns, CSV export. PRIVACY FIRST - Your location is only used to verify your session - never a GPS trace, never a real-time position visible to others - Your home is always hidden - Private audiences by default - Data hosted in Europe, GDPR compliant, never sold - Delete your account and all your data in one tap Ready to make focus a sport? Download Studva and start your first session.

Screenshots

PaperDue4 screens
Studva4 screens

Verdict

The call

The clearest difference is in-app purchases: Studva at none against PaperDue's 1. Studva also leads on iOS requirement (16.4 vs 18.6). On price, rating, ratings volume and update cadence 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. PaperDue sells 1 one-off in-app purchase. Studva asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for PaperDue against 5.0 for Studva. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on October 5, 2026 and October 12, 2026 respectively.

Scorecard2 real differences · 7 level
PaperDue versus Studva: the parameters behind the verdict, then further details
ParameterPaperDueStudva
PriceFreeFree
Rating5.0 (1 ratings)5.0 (1 ratings)
Number of ratings11
Update frequencyWeeklyWeekly
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreeFree
DevicesiPhone, iPad — betteriPhone
Requires iOS18.616.4 — better
Further details — not scored
Size3 MB83 MB
Age rating4+4+
Developer梓豪 朱Geant Luka

In-app purchases

1 purchases

PaperDue

One-time1
  • PaperDue Pro$1.99
None

Studva

No in-app purchases

Questions

Is PaperDue free?
PaperDue is free to download, with in-app purchases available.
Is Studva free?
Studva is free to download, with no in-app purchases.
Which has better reviews, PaperDue or Studva?
PaperDue and Studva are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.
Do PaperDue or Studva have ads?
Neither PaperDue nor Studva shows ads.
Which is updated more often, PaperDue or Studva?
PaperDue ships an update weekly, and Studva weekly. Most recently, PaperDue was updated on October 5, 2026 and Studva on October 12, 2026.

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