Comparison

Hata Defteri vs Octo AI

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

Head to head
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/

About

Octo AI

Features
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Octo AI is an advanced, AI-powered study companion designed to help students master their courses, boost their grades, and prepare for school exams. Whether you are tackling complex math, science, or humanities, Octo AI provides intuitive tools to enhance your learning experience. Key Features: Photo Analysis & Scan Snap a photo of any academic problem to receive instant concept breakdowns and step-by-step analytical guides. Step-by-Step Video Solutions Watch comprehensive video solutions for your questions. Learn the underlying logic of complex topics through engaging, tutor-style video explanations. Personalized Quiz & Test Generator Create custom practice quizzes based on your study topics. Perfect for self-testing, reinforcing knowledge, and preparing for upcoming exams. YouTube Educational Video Summaries Extract key highlights and structured summaries from long educational videos in seconds to save study time. Study Guide & PDF Analyzer Upload textbooks, research articles, or lecture slides. Octo AI summarizes massive documents and extracts key concepts instantly. Math & Science Mentor Understand the logic behind formulas, geometry, and equations with detailed step-by-step methodologies. Concept Simplifier Ask the AI to break down high-level theories into simple, easy-to-understand explanations. 24/7 Academic Support Get round-the-clock guidance, concept clarifications, and learning support whenever you need it. Privacy Policy: https://codeblocstudio.com/apps/octoai/privacy Terms of Use: https://codeblocstudio.com/apps/octoai/terms

Screenshots

Hata Defteri4 screens
Octo AI4 screens

Verdict

The call

The clearest difference is update cadence: Octo AI at every 4 days against Hata Defteri's every 3 weeks. On price, ads, in-app purchases 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

Both are free to download. Hata Defteri sells 2 in-app purchases, starting at $1.99 per month and Octo AI sells 2 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Hata Defteri ships an update every 3 weeks, Octo AI every 4 days. The most recent releases landed on October 24, 2026 and October 19, 2026 respectively.

Scorecard1 real difference · 5 level
Hata Defteri versus Octo AI: the parameters behind the verdict, then further details
ParameterHata DefteriOcto AI
PriceFreeFree
Update frequencyEvery 3 weeksEvery 4 days — better
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.115.0 — better
Further details — not scored
Size43 MB58 MB
Age rating4+4+
DeveloperCagatay EMEKCICENGIZHAN ERTURAN

In-app purchases

2 purchases

Hata Defteri

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

Octo AI

Subscriptions2
  • Octo AI Pro - Weekly3 Days trial$4.997 Days
  • Octo AI Pro - Monthly$12.991 Month

Questions

Is Hata Defteri free?
Hata Defteri is free to download, with in-app purchases available.
Is Octo AI free?
Octo AI is free to download, with in-app purchases available.
Do Hata Defteri or Octo AI have ads?
Neither Hata Defteri nor Octo AI shows ads.
Which is updated more often, Hata Defteri or Octo AI?
Hata Defteri ships an update every 3 weeks, and Octo AI every 4 days. Most recently, Hata Defteri was updated on October 24, 2026 and Octo AI on October 19, 2026.

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