Comparison

Eureka vs Yadex

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

Head to head
About

Eureka

This AI-powered tutor offers step-by-step solutions for math, science, and geography problems. It allows users to input questions via typing, snapping a photo, or scanning, providing detailed explanations to foster understanding and boost exam readiness.

Highlights
  • Type, snap, or scan math and science problems
  • Detailed explanations for complex concepts
  • Interactive AI tutoring at your own pace
  • Boost exam readiness with practice solutions
  • Covers algebra, physics, geography, chemistry, and more
Features
Read full description

Unlock your potential with Eureka, the all-in-one AI tutor that makes learning engaging, efficient, and fun. Whether you're tackling tricky equations, puzzling over scientific concepts, or exploring geography, Eureka is here to guide you with step-by-step solutions tailored to help you truly understand. Here’s what Eureka can do for you: - Type, Snap, or Scan: Instantly solve math problems, geometry puzzles, and even science questions. Simply input your question, snap a picture, or scan your query for a complete breakdown. - Master Any Subject: From algebra to physics, geography to chemistry, Eureka provides detailed explanations to help you grasp the toughest concepts. - Learn at Your Pace: Our AI tutor offers interactive tutoring, walking you through each problem so you can learn as you go. - Boost Exam Readiness: Practice smarter with customized solutions and explanations to prepare for tests and quizzes. With a premium subscription, you unlock unlimited requests using snap or text inputs. With Eureka, learning doesn’t have to be stressful. Say goodbye to confusion and hello to confidence. Whether it’s homework help or mastering new topics, Eureka empowers you to achieve academic success anytime, anywhere. Terms of use: https://eurekaapp.io/terms Privacy policy: https://eurekaapp.io/privacy

About

Yadex

Features
Read full description

Learn German from A1 to C2 – anywhere, even without internet. Yadex combines smart vocabulary reviews, clear grammar lessons, reading and writing practice in one app. Everything works offline. Sign in and your progress follows you to all your devices. SMART VOCABULARY • 5,000+ German words with example sentences • Spaced repetition (FSRS): each word comes back right before you would forget it • Rate Again, Hard, Good or Easy – each button shows the next review time • Create your own decks or import word lists • Spelling and sentence practice, swipe mode and quizzes • Problem words are detected, with tips and your own memory aids GRAMMAR A1–C2 • 135 grammar lessons: understand, recognise, practise, apply • Scored on your real answers, with a repeat round for mistakes • Finished topics return as short mixed reviews • Write your own notes and save example sentences READING & WRITING • 1,500+ graded German texts with questions • Writing exercises by level YOUR PROGRESS, EVERYWHERE • Works fully offline • Sync words, decks, grammar progress, notes and streak across your devices • Reminders when words are due PRIVACY FIRST • No ads, no tracking • We never sell your data • Delete your account and all its data any time in Settings Available in English, German and Persian. Questions or feedback? info@gandomai.com

Screenshots

Eureka4 screens
Yadex4 screens

Verdict

The call

The clearest difference is in-app purchases: Yadex at none against Eureka's 8. Yadex also leads on ads (none vs shown). Eureka's advantage is update cadence (every 4 days vs every 4 months). On price, 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

Both are free to download. Eureka sells 8 in-app purchases, starting at $0.99 per 7 days. Yadex asks for nothing beyond the download.

UpkeepUpdate frequency

Eureka ships an update every 4 days, Yadex every 4 months. The most recent releases landed on October 21, 2026 and October 13, 2026 respectively.

Scorecard3 real differences · 7 level
Eureka versus Yadex: the parameters behind the verdict, then further details
ParameterEurekaYadex
PriceFreeFree
Rating4.5 (24 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings24 — better—
Update frequencyEvery 4 days — betterEvery 4 months
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhoneiPhone, iPad — better
Requires iOS16.0 — better17.0
Further details — not scored
Size27 MB38 MB
Age rating4+4+
DeveloperAnastasiia KhovaevaAli Reza Hussaini

In-app purchases

8 purchases

Eureka

Subscriptions8
  • Eureka Premium access$0.997 Days
  • Eureka Premium access3 Days trial$0.997 Days
  • Eureka Premium access3 Days trial$2.997 Days
Show 5 more
  • Eureka Premium access3 Days trial$4.997 Days
  • Eureka Premium Access3 Days trial$7.997 Days
  • Eureka Premium access3 Days trial$9.991 Month
  • Eureka Premium access3 Days trial$14.991 Month
  • Eureka Premium access3 Days trial$39.991 Year
None

Yadex

No in-app purchases

Questions

Is Eureka free?
Eureka is free to download, with in-app purchases available.
Is Yadex free?
Yadex is free to download, with no in-app purchases.
Do Eureka or Yadex have ads?
Eureka shows ads; Yadex does not.
Which is updated more often, Eureka or Yadex?
Eureka ships an update every 4 days, and Yadex every 4 months. Most recently, Eureka was updated on October 21, 2026 and Yadex on October 13, 2026.

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