Comparison

eSquirrel vs Stone Identifier by RockPic

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

Head to head
About

eSquirrel

This app helps users learn and retain information through spaced repetition quizzes. It offers gamified learning with quests and levels, ideal for exam preparation and employee training. Practice anytime, anywhere, and track your progress against classmates.

Highlights
  • Spaced repetition for long-term memory
  • Gamified quests with acorn rewards
  • Progress tracking and ranking lists
  • Mobile-optimized quiz format
  • Tailored learning materials
  • Employee training modules
Features
Read full description

eSquirrel for education Successfully learn to many textbooks and courses - especially for the school-leaving exam, vocational maturity exam & entrance tests. With the support of A1. With eSquirrel you don't just practise the questions once and forget them, but repeat them until you have memorised them! eSquirrel for business Digital learning for employees without a laptop or the internet. The clever combination of gamification, blended and mobile learning motivates employees to engage in independent but also guided training. With eSquirrel for business you also learn with ready-to-use course materials on data protection, first aid, occupational safety and much more! An eSquirrel course is divided into quests each consisting of up to 10 questions. Embark on a quest by answering questions to collect acorns. But beware: A quest is not completed easily! You can only complete them once you have answered each question correctly. Don’t worry: We will help you! The first time you successfully complete a quest, you have made it to the Bronze level. Increase the value of your acorns even more by moving from level to level in a quest. Did you make it to the Silver level already? With eSquirrel you only repeat quests when you are about to forget them. Every child knows that you learn by repeating. According to the principle of “spaced repetitions“, you only repeat when you might start to forget your knowledge. The more often you repeat, the longer these intervals become. In this way you transfer knowledge into your long-term memory – without getting bored. Are you waiting for the bus? For friends? Till the food comes? Ideal time to complete a quest! You don’t need to have your textbook with you, you can simply answer quiz questions. Whenever and wherever you want. Our questions are mobile optimized. They easily fit on a smartphone and can usually be solved without any tools. Are you one of the best? In the ranking list you see yourself and the TOP 33% of your classmates. If you are not assigned to a teacher, you will be compared to all other students who also practice independently of a teacher. Are you one of the best? With eSquirrel you use high quality learning materials tailored to your subject or exam. Practice matching the textbook or course materials created by university lecturers, high school professors and textbook authors. With an eSquirrel course you will learn tested knowledge in the right formats.

About

Stone Identifier by RockPic

Instantly identify rocks, minerals, and gemstones by simply snapping a photo. This AI-powered app provides detailed insights into a stone's rarity, composition, origin, and uses. Perfect for collectors, students, and geology enthusiasts looking to learn more about their discoveries.

Highlights
  • AI-powered rock identification
  • Gemstone scanner
  • Rarity and magnetism analysis
  • Composition and origin details
  • Alternative names and uses
  • Organize rock collection
Features
Read full description

Stone Identifier by RockPic – AI-Powered Rock & Jewelry Finder App Unlock the secrets of rocks, minerals, and gemstones with a powerful identification tool designed for enthusiasts, students and professional geologists. Snap a picture of any rock, gem, crystal or mineral and let our AI scanner do the work. RockPic instantly recognizes the stone and provides essential insights, including rarity, magnetism, composition, origin, common uses, and more. Key Features: ▶ AI-Powered Rock Identification – Take a picture or upload from your photo library, and our gemstone scanner will quickly verify the stone. ▶ Rarity & Magnetism – Determine how rare the stone is and whether it has magnetic properties. ▶ Composition & Origin – Learn about the rock’s chemical makeup, formation, and history. ▶ Alternative Names & Uses – Discover other names for the stone and its common applications in jewelry, construction, and more. ▶ Organize Your Collection – Build your personal rock collection and track your discoveries. ▶ All-in-One Gem & Fossil Identifier – Works with diamonds, crystals, fossils, minerals, and more precious stones. With RockPic, identifying a stone has never been easier. Whether you’re a gemstone collector, jewelry enthusiast or just curious, this powerful AI image analyser is the perfect tool for every rock lover. Terms of service: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

eSquirrel4 screens
Stone Identifier by RockPic4 screens

Verdict

The call

The clearest difference is review sentiment: eSquirrel at 100% against Stone Identifier by RockPic's 75%. eSquirrel also leads on monetization model (free vs free with in-app purchases). On price, update cadence, ads and in-app purchases 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. eSquirrel sells 10 one-off in-app purchases and Stone Identifier by RockPic sells 4 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

eSquirrel ships an update every 5 weeks, Stone Identifier by RockPic every 3 weeks. The most recent releases landed on November 6, 2026 and November 4, 2026 respectively.

Scorecard2 real differences · 8 level
eSquirrel versus Stone Identifier by RockPic: the parameters behind the verdict, then further details
ParametereSquirrelStone Identifier by RockPic
PriceFreeFree
Rating—4.8 (160 ratings) — better
Positive reviews100.0% of reviews — better75.0% of reviews
Number of ratings—160 — better
Update frequencyEvery 5 weeksEvery 3 weeks — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.0 — better15.6
Further details — not scored
Size60 MB77 MB
Age rating4+4+
DevelopereSquirrel GmbHPablo Paciello

Customer experience

eSquirrel

Written reviews5 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Stone Identifier by RockPic

All ratings160 ratings
Positive95.0%
Neutral1.9%
Negative3.1%
Written reviews16 reviews
Positive75.0%
Neutral12.5%
Negative12.5%

In-app purchases

10 purchases

eSquirrel

One-time10
  • DigiUp NEXT (hu)Free
  • DigiUp NEXT (at)Free
  • Englisch Vocabulary for MORE!1Free
Show 7 more
  • Digitale Grundbildung 1Free
  • LSL: LebensmittelverschwendungFree
  • Märchen für alle – Märchenklassiker$14.99
  • Digitale Grundbildung 3$14.99
  • einfach bio 4 (öbv)$14.99
  • Musik 1 (eSquirrel)$14.99
  • Innere Medizin (Herold)$89.99
4 purchases

Stone Identifier by RockPic

Subscriptions3
  • PRO Subscription weekly$4.997 Days
  • PRO Subscription monthly$6.991 Month
  • PRO Subscription Yearly$29.991 Year
One-time1
  • RockPic Pro Lifetime$49.99

Questions

Is eSquirrel free?
eSquirrel is free to download, with in-app purchases available.
Is Stone Identifier by RockPic free?
Stone Identifier by RockPic is free to download, with in-app purchases available.
Do eSquirrel or Stone Identifier by RockPic have ads?
Neither eSquirrel nor Stone Identifier by RockPic shows ads.
Which is updated more often, eSquirrel or Stone Identifier by RockPic?
eSquirrel ships an update every 5 weeks, and Stone Identifier by RockPic every 3 weeks. Most recently, eSquirrel was updated on November 6, 2026 and Stone Identifier by RockPic on November 4, 2026.

Other comparisons