Sasu vs LockFeed
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sasu
This app helps children aged 2-8 develop empathy, values, and critical thinking through interactive stories and guided questions. It transforms passive screen time into meaningful conversations for families and schools.
- Interactive stories for dialogue
- Guided questions for reflection
- Developmentally adapted experiences
- Structured moments for connection
- Empathy and emotional awareness
- Critical thinking and independent judgment
- Responsibility and values formation
Read full descriptionHide full description
Convierte el tiempo en pantalla en conversaciones que realmente importan. Sasu ayuda a niñas y niños de 2 a 8 años a desarrollar empatía, valores y pensamiento crítico a través de historias y preguntas guiadas que generan conexión real. ¿Qué es Sasu? Sasu transforma el contenido pasivo en diálogo activo. En lugar de solo ver, las niñas y los niños participan en experiencias diseñadas para conversar, reflexionar y formar criterio propio. Cada historia abre la puerta a conversaciones importantes que muchas veces no sabemos cómo iniciar. ¿Cómo funciona? Historias interactivas diseñadas para generar diálogo Preguntas guiadas que fomentan la reflexión Experiencias adaptadas a cada etapa de desarrollo Momentos estructurados que convierten la pantalla en conexión ¿Qué desarrollan? Empatía y conciencia emocional Pensamiento crítico y criterio propio Responsabilidad y formación en valores Habilidades de comunicación Para familias Sasu ofrece una forma clara y práctica de hablar sobre emociones, decisiones, justicia y comportamiento. No necesitas improvisar: la guía ya está integrada en cada experiencia. Para escuelas Extiende la formación más allá del aula. Sasu refuerza el desarrollo humano desde casa en coherencia con el proceso educativo. ¿Por qué Sasu? Sasu no es solo contenido. Es un proceso. Un sistema que ayuda a que las conversaciones importantes ocurran, de forma constante e intencional, en las etapas que más influyen en la formación de una persona.
LockFeed
This app requires users to answer short quizzes before granting access to selected applications. Users can customize unlock times and the number of questions needed per unlock. It offers various learning topics and a one-time purchase for unlimited access.
- Answer quizzes to unlock apps
- Customize unlock duration
- Select number of questions per unlock
- Variety of quiz topics
- Offline quiz content
- One-time purchase for unlimited access
Read full descriptionHide full description
Earn your screen time with a little learning. LockFeed puts a short challenge before the apps you choose. Enable one or more quizzes, choose how many questions to complete, and use Apple Screen Time to add a pause before you scroll. HOW IT WORKS • Choose the apps you want to lock. • Enable quizzes and choose how many correct answers you need to unlock. • Set a default unlock time, with optional custom times for individual apps. • Complete your challenge to unlock the app you want to use. • When your unlock time ends, the app locks again. MAKE EACH UNLOCK YOUR OWN Start with one question per unlock, or choose up to 10. Each completed quiz round counts as one question. Your progress is saved if you leave before finishing. Use Manage Apps to Lock to add or remove apps and give each app its own unlock time, or let it follow your default. Changing a time does not cut short an unlock you have already earned. FIVE FREE APP UNLOCKS Try five successful quiz-based app unlocks. After those five unlocks, Lifetime Access is required for further unlocks. Each earned unlock lasts for the full duration you chose. LIFETIME ACCESS A one-time in-app purchase enables unlimited quiz-based app unlocks and standalone quiz practice. Standalone practice requires Lifetime Access. There is no subscription, and the price for your region is shown before purchase. Restore Purchases is available for previous buyers. FIND SOMETHING YOU WANT TO LEARN Practice vocabulary, identify famous artworks and country flags, solve chess puzzles, or find notes on a guitar fretboard. Read short Python functions and identify their time complexity, or explore practice questions in math, science, exam preparation, driving theory, and citizenship. Learn about AI with LLM Fundamentals and Practical Deep Learning: 304 questions with explanations and links to supporting lessons. Questions and explanations work offline; opening source lessons requires an internet connection. Your enabled quizzes form a shared pool across your protected apps. The quizzes take turns in a shuffled order, with each getting a turn before repeating. When you require multiple answers, each question advances to the next quiz in the rotation. Manage your enabled quizzes or adjust your unlock settings anytime. Quiz content is bundled for offline use, and no account is required. CHOOSE YOUR STYLE Switch between Classic and a neutral black-and-white Dark appearance in Settings. Your lock screens follow your chosen style, while quiz artwork keeps its original colors. HAVE AN IDEA OR NEED HELP? Use the Feedback tab to write a message and send it to joma@lockfeed.app from your email account. Unsent drafts are saved on your device. LockFeed uses Apple Screen Time permission to manage access to the apps you select. Short practice quizzes are learning aids, not complete exam preparation courses or official exam simulations.
Screenshots
Verdict
The clearest difference is rating: Sasu at 5.0 against LockFeed's 4.3. Sasu also leads on monetization model (free vs free with in-app purchases) and device support (3 vs 1). LockFeed's advantage is ads (none vs shown) and update cadence (daily vs every 2 weeks). 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
Both are free to download. Sasu sells 2 in-app purchases, starting at $6.99 per month and LockFeed sells 6 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
Sasu holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 3 and 11 respectively.
Sasu ships an update every 2 weeks, LockFeed daily. The most recent releases landed on October 18, 2026 and October 31, 2026 respectively.
| Parameter | Sasu | LockFeed |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) — better | 4.3 (11 ratings) |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 3 | 11 — better |
| Update frequency | Every 2 weeks | Daily — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.1 — better | 18.0 |
| Further details — not scored | ||
| Size | 76 MB | 33 MB |
| Age rating | 4+ | 12+ |
| Developer | Chokolad Private Limited | Mosaic Integral Innovations LLC |
Customer experience
Sasu
LockFeed
In-app purchases
Sasu
- Sasu Plus Monthly$6.991 Month
- Sasu Plus Yearly$59.991 Year
LockFeed
- Lifetime Access$0.99
- Lifetime Access$2.99
- Lifetime Access$4.99
Show 3 moreShow fewer
- Lifetime Access$9.99
- Lifetime Access$19.99
- Lifetime Access$30.00









