Comparison

PopStudy vs Einstein Recall

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

Head to head
About

PopStudy

Master any subject with this educational app utilizing a spaced repetition system. Create custom study mixes, engage in personalized sessions, and track your learning progress. Access curated content and study offline on your devices.

Highlights
  • Spaced repetition system
  • Curated expert content
  • Customizable study mixes
  • Personalized daily sessions
  • Progress tracking
  • Cross-device syncing
  • Offline studying
Features
Read full description

PopStudy — Master Spanish, French, or Chinese Most language apps teach you to dabble. PopStudy is built for learners who want to actually master a language — to read, write, listen, and speak with real fluency. Three languages. Curriculum-grade content. An AI coach that sharpens your skills. How does it work? Have you ever found yourself unwittingly singing the words to a song that's played over and over on the radio? That's spaced repetition at work. Research shows our brains transform repeated information into real knowledge, very quickly. PopStudy uses a scientifically-tuned spaced repetition engine to help you achieve fluency in record time — training you to recognize the nuanced sounds, patterns, and rhythms that are the building blocks of any language. What's inside: - A scientifically-tuned spaced repetition engine that gets vocabulary and grammar to stick — faster than streak-based apps. - An expert-curated library of lessons in Spanish, French, and Chinese, charting a path for everyday learners, plus ACTFL-aligned paths for school programs. - Custom AI lessons on any topic you choose — from job interview prep to vocabulary from your favorite TV shows — generated on demand. - A 24/7 AI coach to answer your questions and target your learning goals. - Listening, reading, speaking, and writing activities — comprehension drills built on native-speaker audio, pronunciation practice with instant feedback, spelling drills, and role-play scenarios. - Daily performance reports that show your strengths and weaknesses, so you always know how far you've come and where you need to go next. - Cross-platform sync across iPhone, iPad, and the web. Pick up where you left off. PopStudy is built for serious learners — students preparing for AP Spanish, AP French, or HSK Chinese exams; professionals working toward fluency; heritage speakers reconnecting with a family language; and anyone ready to go beyond beginner streaks. Have fun speaking your new language with confidence — you'll amaze yourself and the people around you. Download PopStudy and start mastering your language today. PopStudy Premium is an auto-renewable subscription. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://popstudy.com/privacy_policy

About

Einstein Recall

This app helps you retain more of what you read by using spaced repetition. It automatically schedules reviews and allows you to create memory cards from any content with a single tap. Build lasting knowledge with minimal daily effort.

Highlights
  • Auto-scheduled reviews
  • Instant memory card creation
  • AI-powered card generation
  • Image and screenshot analysis
  • Organize cards into folders
  • Streak tracking
  • Daily reminders
Read full description

Do you read constantly, but remember almost none of it? Einstein Recall fixes that. It uses spaced repetition — the same technique used by memory champions and top performers — to make sure the things you learn actually stick. Reviews are scheduled automatically, so you spend zero time managing the system and all your time building knowledge that lasts. Built for how you actually consume information Share anything directly from Safari, X, newsletters, or any app. Einstein Recall reads the content and turns it into memory cards instantly — no copy-pasting, no manual effort. Key features Auto-schedule reviews at scientifically optimal intervals Share articles, tweets, or screenshots from any app to create cards instantly Chat with AI to generate cards from any topic Upload images and screenshots to extract key insights Organize cards into folders by topic or source Streak tracking to build a consistent review habit Daily reminders so nothing falls through the cracks How it works Add something worth remembering. Review it when Einstein Recall tells you to. Forget about forgetting. Most users spend less than 5 minutes a day reviewing. The compounding effect over weeks and months is significant. Start remembering what you read

Screenshots

PopStudy4 screens
Einstein Recall4 screens

Verdict

The call

The clearest difference is in-app purchases: Einstein Recall at none against PopStudy's 3. Einstein Recall also leads on iOS requirement (16.6 vs 18.0). PopStudy's advantage is ads (none vs shown) and ratings volume (9 vs 2). On price, rating, review sentiment 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. PopStudy sells 3 one-off in-app purchases. Einstein Recall asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.9 for PopStudy against 5.0 for Einstein Recall. Both are backed by a comparable volume of ratings — 9 and 2 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

PopStudy ships an update fortnightly, Einstein Recall every 2 weeks. The most recent releases landed on October 24, 2026 and October 19, 2026 respectively.

Scorecard4 real differences · 6 level
PopStudy versus Einstein Recall: the parameters behind the verdict, then further details
ParameterPopStudyEinstein Recall
PriceFreeFree
Rating4.9 (9 ratings)5.0 (2 ratings) — better
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings9 — better2
Update frequencyFortnightlyEvery 2 weeks — better
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationAd-supportedAd-supported
DevicesiPhone, iPadiPhone, iPad
Requires iOS18.016.6 — better
Further details — not scored
Size151 MB15 MB
Age rating4+4+
DeveloperLongtail StudiosScott Collins

Customer experience

PopStudy

All ratings9 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Einstein Recall

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

3 purchases

PopStudy

One-time3
  • 1-Month Subscription$7.99
  • 3-Month Subscription$19.99
  • 1-Year Subscription$59.99
None

Einstein Recall

No in-app purchases

Questions

Is PopStudy free?
PopStudy is free to download, with in-app purchases available.
Is Einstein Recall free?
Einstein Recall is free to download, with no in-app purchases.
Which has better reviews, PopStudy or Einstein Recall?
Einstein Recall is rated higher. PopStudy averages 4.9 out of 5 from 9 ratings, while Einstein Recall averages 5.0 from 2 ratings.
Do PopStudy or Einstein Recall have ads?
Einstein Recall shows ads; PopStudy does not.
Which is updated more often, PopStudy or Einstein Recall?
PopStudy ships an update fortnightly, and Einstein Recall every 2 weeks. Most recently, PopStudy was updated on October 24, 2026 and Einstein Recall on October 19, 2026.

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