AI vs Spaced
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
AI
This app serves as an AI knowledge expert, offering comprehensive artificial intelligence content for members. It covers AI trends, technical analysis, book recommendations, expert interviews, courses, and a community forum. It's designed to help users stay updated and enhance their AI skills.
- AI Trends Blog
- Technical Analysis Videos
- Book Recommendations
- Expert Podcast Interviews
- Systematic AI Courses
- Active Tech Community
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AI-Nate是您的AI知识专家,为会员提供全方位人工智能内容(月订阅仅$1.99)。应用集合AI前沿技术、深度学习进展和实用应用案例,满足从入门到专业的全部需求。六大精选板块——AI趋势博客、技术解析视频、权威书籍推荐、专家播客访谈、系统化AI课程及活跃技术社区,让您随时掌握行业动态,精进AI技能。无论您是AI爱好者、学习者还是从业人员,AI-Nate都将成为您探索人工智能世界的得力助手。立即下载,与AI共同进化!
Spaced
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Spaced is a simple, effective vocabulary trainer language learning, built around spaced repetition. Review words and characters at the right moment—before you forget them—and build long-term memory with just a few minutes a day. Originally created to help our daughters learn Simplified Chinese characters (汉字 / Hanzi), Spaced has grown into a flexible tool designed especially for learning Chinese vocabulary, phrases, and characters in a structured way. WHY SPACED Spaced began as a physical Leitner box full of flashcards—useful for memorization, but not very portable. We turned that system into a lightweight app focused on efficient, long-term learning, especially for Chinese vocabulary and Hanzi. HOW IT WORKS Spaced is built around the forgetting curve: review information at increasing intervals to retain it longer. • Create a WordList for what you want to learn (such as Chinese vocabulary or Hanzi sets) • Study briefly each day • Remembered items move up through levels • Forgotten items return for reinforcement The app automatically schedules reviews using a 56-day spaced repetition cycle. CREATE YOUR WORDLISTS Create WordLists for anything you’re learning—commonly Chinese HSK levels, Hanzi character sets, vocabulary themes, or textbook content. Add words manually or use built-in Simplified Chinese lists. Each item supports notes, example sentences, and optional hints. STUDY Tap Start to begin a session. If you take a break, Spaced resumes where you left off. The Home screen shows your next scheduled review. To make learning more engaging, Spaced also includes voice recognition for pronunciation practice and fun learning games to reinforce recall in a more interactive way. STARRED WORDS Mark difficult items for extra practice. Filter by starred words, star levels, or use weighted mode to surface harder items more often. REVISION AND TESTING Spaced includes two study modes: • Revision (Levels 1–2): Build familiarity with new material • Test (Levels 3–7): Check what you know through recall Correct answers advance; incorrect ones return for reinforcement. External keyboard controls are supported. ICLOUD SYNC Your progress stays up to date across devices. Spaced uses iCloud and CloudKit to automatically sync WordLists, progress, and starred items. STAY CONSISTENT A few minutes a day can make a big difference. Keep going, trust the process, and build lasting vocabulary step by step. Happy studying with Spaced. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is update cadence: AI at every 9 days against Spaced's monthly. 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
Both are free to download. AI sells 1 in-app purchase, starting at $4.99 per month and Spaced sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.
AI ships an update every 9 days, Spaced monthly. The most recent releases landed on June 3, 2026 and September 24, 2026 respectively.
| Parameter | AI | Spaced |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 9 days — better | Monthly |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Subscription | — |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 17.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 20 MB | 356 MB |
| Age rating | 17+ | 4+ |
| Developer | Soul AI LLC | Sam Woolf |
In-app purchases
AI
- Basic Plan$4.991 Month
Spaced
- Premium$0.991 Month
- Premium$5.991 Year
- Premium$9.99









