Comparison

Sage vs Hata Defteri

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

Head to head
About

Sage

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AfetHoca helps you learn by thinking, not just copying answers! Take a photo of your question — AfetHoca's AI reads it and guides you with Socratic hints. No direct answers, just smart clues that help you truly understand. PHOTO QUESTION HELPER - Snap a photo of any homework question - AI reads and analyzes the problem - Get step-by-step hints to reach the answer yourself SOCRATIC METHOD - Doesn't give answers — teaches you to think - Each hint brings you closer to understanding - Real learning, not memorization STUDY FLASHCARDS + SPACED REPETITION - 420+ exam flashcards covering all subjects - Review Mode: Don't Know / Hard / Got It - SM-2 algorithm shows cards at exactly the right time - Focus on your weak spots, skip what you already know PRACTICE TEST ANALYSIS - Track your score trend with charts - Automatically identify your weakest subjects - See your improvement between first and latest tests - Organize unanswered questions by subject AI STUDY PLANNER - Personalized weekly plan based on your weak subjects - Priority schedule based on days left until exam - AI-powered strategy: SAT, AP, ACT, college prep STUDY TIMER & POMODORO - Classic 25/5 Pomodoro or custom single timer - Beautiful candle animation theme - Set daily and weekly study goals - Live Activity — track time on your lock screen ALL SUBJECTS - Math, Geometry, Physics, Chemistry, Biology - SAT, AP, ACT, and college exam preparation - Suitable for all grade levels COMMUNITY & GROUPS - Create study groups with friends - Share questions and study together - Join communities and collaborate AfetHoca — The AI that teaches you HOW to think. Set your planner, stay focused, learn deeply.

About

Hata Defteri

Features
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Yanlışların artık fırsat. YanlışKutu, sınava hazırlanan öğrenciler için tasarlanmış akıllı bir hata defteri. Çözemediğin ya da yanlış yaptığın soruları kaydet, yapay zeka senin için etiketlesin, doğru zamanda tekrar ederek kalıcı olarak öğren. Çek ve unut — gerisini AI halleder Soruyu fotoğrafla, yapay zeka dersini, konusunu ve hata tipini saniyeler içinde tespit etsin. İstersen tek dokunuşla düzenle. Akıllı tekrar sistemi Unutma eğrisine göre her gün karşına çıkan kişisel tekrar listesi. "Çözdüm", "Hâlâ zor" veya "Atla" — uygulama gerisini ayarlar. Nerede zayıfsın, net gör Ders bazlı performans, hata dağılımı ve kişiye özel AI önerileri. Hangi konuya çalışman gerektiğini tahmin etmeyi bırak. AI çözüm önerileri (Pro) Sadece doğru cevabı değil, adım adım çözümü ve yaptığın hatayı da gör. Ailen de yanında Veliler QR kod ile bağlanır, çocuklarının gelişimini takip eder. Soru içerikleri gizli kalır — sadece istatistikler paylaşılır. Seri ve rozetler Her gün çalış, serini koru, rozetler kazan. Çalışmayı oyuna çevir. Kimler için? LGS, TYT, AYT ve KPSS'ye hazırlanan 12–18 yaş öğrenciler ve velileri. Hata Defteri Pro Temel soru kaydetme ve tekrar özellikleri süresiz ücretsizdir. Ücretsiz planda ayda 5 AI analiz ve 1 detaylı çözüm; Pro planda ayda 100 AI analiz ve 30 detaylı çözüm sunulur. Hatalarını biriktir, onlardan öğren. YanlışKutu ile her yanlış bir adım ileri. Gizlilik Politikası: https://appapi-production-ee9d.up.railway.app/gizlilik/ Kullanım Şartları (EULA): https://appapi-production-ee9d.up.railway.app/sartlar/ Apple Standart EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Sage4 screens
Hata Defteri4 screens

Verdict

The call

The clearest difference is update cadence: Hata Defteri at every 3 weeks against Sage's every 2 months. Hata Defteri also leads on device support and iOS requirement (15.1 vs 17.0). On price 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. Sage sells 3 in-app purchases, starting at $2.99 per 7 days and Hata Defteri sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Sage ships an update every 2 months, Hata Defteri every 3 weeks. Both last shipped on October 31, 2026.

Scorecard3 real differences · 3 level
Sage versus Hata Defteri: the parameters behind the verdict, then further details
ParameterSageHata Defteri
PriceFreeFree
Update frequencyEvery 2 monthsEvery 3 weeks — better
Ads—No
In-app purchasesYesYes
Devices—iPhone, iPod — better
Requires iOS17.015.1 — better
Further details — not scored
Size17 MB43 MB
Age rating4+4+
DeveloperSelin Gursoy YucelCagatay EMEKCI

In-app purchases

3 purchases

Sage

Subscriptions3
  • Weekly3 Days trial$2.997 Days
  • Monthly3 Days trial$4.991 Month
  • Yearly3 Days trial$24.991 Year
2 purchases

Hata Defteri

Subscriptions2
  • 1 Aylık Pro Plan$1.991 Month
  • 1 Yıllık Pro Plan$19.991 Year

Questions

Is Sage free?
Sage is free to download, with in-app purchases available.
Is Hata Defteri free?
Hata Defteri is free to download, with in-app purchases available.
Which is updated more often, Sage or Hata Defteri?
Sage ships an update every 2 months, and Hata Defteri every 3 weeks. Most recently, Sage was updated on October 31, 2026 and Hata Defteri on October 31, 2026.

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