Retent vs u4a Хитро
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Retent
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Turn what you study into long-term memory. Retent helps you remember what you learn by turning your study material into intelligent quizzes after each Focus session. STUDY SMARTER - Add your study material - Set up your desired quiz or flashcards - Read during your Focus session - Test your retention later with AI-powered quizzes FEATURES - AI-generated quizzes based on your notes - Smart Flashcards - Focus sessions that track your attention span - Points, ranks, leaderboards and coins - Ambient audio to help you study - Custom avatars, badges and profile frames WHY CHOOSE RETENT? Retent is built for real retention, not just studying. Instead of passively reviewing material, Retent helps reinforce what you learn so knowledge actually sticks. You can study your own notes, books, slides or any text in general. The app will in turn automatically generate quizzes to test your memory. With a point and coin system, ranks and total personalisation, Retent keeps you motivated while learning, and distraction free Focus sessions with optional ambient sounds help you stay in the zone. Retent is not about studying more - it is about remembering more. WHO IS IT FOR? - Students preparing for exams or studying in general - Anyone interested in improving their attention span while also learning Retent is not just another study timer - it helps reinforce what you learn so it actually stays with you. Start learning. Start remembering. Start Retenting.
u4a Хитро
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u4a Хитро е геймифицирано приложение по български език за ученици от 1. до 4. клас. С весели упражнения, интерактивна карта на нивата и госпожа Лисица, децата тренират: Правопис и диктовки Четене с разбиране Откриване на грешки в текст Мини-игри за затвърждаване на наученото Всяко упражнение е съобразено с учебната програма и възрастта на детето, а прогресията по нива поддържа мотивацията през цялата учебна година. u4a Хитро прави ученето на български език забавно и достъпно — навсякъде, по всяко време. Условия за ползване: https://u4a.bg/terms
Screenshots
Verdict
Retent and u4a Хитро are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Retent sells 2 in-app purchases, starting at $6.99 per month and u4a Хитро sells 5 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.
Retent ships an update every 9 days, u4a Хитро every 11 days. The most recent releases landed on October 31, 2026 and October 24, 2026 respectively.
| Parameter | Retent | u4a Хитро |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 9 days — better | Every 11 days |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 27 MB | 109 MB |
| Age rating | 9+ | 4+ |
| Developer | Kristiyan Grigorov | MUZIKA DVAISET I EDNO EOOD |
In-app purchases
Retent
- Retent Unlimited Monthly$6.991 Month
- Retent Unlimited Yearly$39.991 Year
u4a Хитро
- u4a Хитро Monthly7 Days trial$3.991 Month
- 6-месечен абонамент$12.996 Months
- Годишен абонамент$24.991 Year
- Доживотен достъп$34.99
- Lifetime Access$44.99









