Comparison

Study Deck vs DelayLens

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

Head to head
About

Study Deck

Transform study materials into organized memory cards for faster learning and better retention. Track progress with visual graphs and maintain study habits with a personal calendar. Enjoy an ad-free, distraction-free learning experience.

Highlights
  • Create unlimited custom decks and cards
  • Visualize learning progress with graphs
  • Personal study calendar and habit tracking
  • AI-powered flashcard creation
  • Ad-free and distraction-free interface
Features
Read full description

Stop juggling messy notes and scattered study materials. Study Deck helps you turn any subject into organized, powerful memory cards—so you can learn faster, track your progress, and actually remember. Create Unlimited Decks & Cards Whether you're studying medicine, learning a language, or preparing for finals, build custom decks for every subject. Add your own memory cards, tailor each fact, and learn at your own pace. Visualize Your Progress Knowledge should be measurable. See exactly how well you're doing with clear graphs and percentage scores. Watch your retention grow and know when you've truly mastered a topic. Stay Consistent with a Personal Study Calendar Motivation fades—habits stick. Keep track of every study session, see which subjects you studied each day, and build a streak you're proud of. No more guessing if you're on track. Simple. Flexible. Yours. No ads, no distractions, no limits. Just you, your cards, and a smarter way to learn. Terms and Conditions & Privacy Policy: https://github.com/estersr/App-Policies

About

DelayLens

This app helps you recover from procrastination by logging the experience, identifying causes, and guiding you to take one small next step. It offers focused work sessions and provides insights into what helps you restart.

Highlights
  • Log procrastination time
  • Identify causes and add notes
  • Define small next actions
  • Set focus sessions (5, 15, 25 min)
  • Review daily and weekly trends
  • Gain insights into method effectiveness
Features
Read full description

Procrastinated? You can still restart. DelayLens is a gentle tool for the moment after you realize you got stuck. Instead of asking you to become perfectly disciplined, it helps you record what happened, name the cause, choose the smallest next action, and return to focused work. It is not a generic Pomodoro timer, to-do list, or habit tracker. DelayLens is built around one clear recovery loop: record → understand → take one small step → focus → learn from what helped. HOW IT WORKS 1. Record the procrastination Start a log when you notice you are putting something off. End it when you are ready to come back, so the time that actually passed is captured. 2. Name what got in the way Choose a reason, add a task category, and leave a note if useful. A task may feel too large, the first step may be unclear, or you may be tired or distracted. Recording the cause turns a vague feeling into something you can review. 3. Choose one small next action Replace “finish the report” with “open the document and write the title.” Make the next move specific enough to begin. 4. Choose a restart method and focus length Pick a restart method that fits the moment, then focus on the next action for 5, 15, or 25 minutes. When it ends, decide what comes next. 5. Learn what helps you restart Review procrastination time, causes, restart methods, completion, and your own feedback. Over time, DelayLens can compare which methods are associated with more completed actions and provide method-based insights and personalized suggestions from your records. WHAT DELAYLENS HELPS YOU DO • Log procrastination time as it happens • Record reasons, categories, and notes • Turn a stuck task into a small next action • Follow small steps during a 5, 15, or 25 minute focus session • Use different restart methods and keep a record of what you tried • Review daily and weekly trends • Bring today’s procrastination and focus together in a daily reflection • Leave feedback on what helped • See method effectiveness and personalized suggestions based on your records • See the link between a procrastination log and the focused action that followed FREE AND PRO The free experience helps you complete the restart in front of you: log the episode, understand the cause, choose a next action, focus, and review today or this week. DelayLens Pro adds longer-range views and deeper pattern insights, including method effectiveness and personalized suggestions based on your recorded completion and feedback patterns. MADE FOR REAL-LIFE STARTING TROUBLE DelayLens can help when: • You know you should study but have not opened the material • A work task feels too large to begin • You are tired but still want to move forward a little • The same kind of procrastination keeps returning DelayLens does not promise to eliminate procrastination or complete your work for you. It gives you a calmer way to acknowledge what happened and begin again. Start with one small action. Terms of Use (Apple Standard EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Study Deck4 screens
DelayLens4 screens

Verdict

The call

The clearest difference is price: DelayLens at Free against Study Deck's $7.99. DelayLens also leads on update cadence (every 3 weeks vs every 3 months). Study Deck's advantage is in-app purchases (none vs 3). On rating, ratings volume, ads and device support 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

DelayLens is free to download; Study Deck costs $7.99 up front. DelayLens sells 3 in-app purchases, starting at $1.99 per month. Study Deck 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 Study Deck against 5.0 for DelayLens. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

UpkeepUpdate frequency

Study Deck ships an update every 3 months, DelayLens every 3 weeks. The most recent releases landed on September 6, 2026 and September 12, 2026 respectively.

Scorecard4 real differences · 6 level
Study Deck versus DelayLens: the parameters behind the verdict, then further details
ParameterStudy DeckDelayLens
Price$7.99Free — better
Rating5.0 (1 ratings)5.0 (1 ratings)
Positive reviews100.0% of reviews—
Number of ratings11
Update frequencyEvery 3 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFreemium — better
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.617.0 — better
Further details — not scored
Size32 MB14 MB
Age rating4+4+
DeveloperEsther Ramos子莹 李

Customer experience

Study Deck

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

DelayLens

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

In-app purchases

None

Study Deck

No in-app purchases

3 purchases

DelayLens

Subscriptions2
  • DelayLens Pro Monthly7 Days trial$1.991 Month
  • DelayLens Pro Yearly$9.991 Year
One-time1
  • DelayLens Founder Lifetime$19.99

Questions

Is Study Deck free?
Study Deck costs $7.99, with no in-app purchases.
Is DelayLens free?
DelayLens is free to download, with in-app purchases available.
Which has better reviews, Study Deck or DelayLens?
Study Deck and DelayLens are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.
Do Study Deck or DelayLens have ads?
Neither Study Deck nor DelayLens shows ads.
Which is updated more often, Study Deck or DelayLens?
Study Deck ships an update every 3 months, and DelayLens every 3 weeks. Most recently, Study Deck was updated on September 6, 2026 and DelayLens on September 12, 2026.

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