Num Trainer vs CapWords
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Num Trainer
This app offers quick, engaging number-based exercises to sharpen your mind. Improve focus, memory, and mental math skills with short training sessions that can be adjusted for difficulty.
- Improve reflection and focus
- Enhance attention and memory
- Develop mental math skills
- Boost logic abilities
- Multiple training modes
- Adjustable difficulty levels
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Num Trainer is a lightweight app for building sharper number skills through four focused training games. Improve attention, memory, reaction speed, mental math, and logic with short practice sessions you can fit into your day. Choose your challenge: • Mental Math — solve addition, subtraction, multiplication, and division problems. • Memory Pairs — remember positions and match identical numbers. • Tap in Order — find and tap numbers from smallest to largest. • Digit-by-Digit Math — remember a number, then transform each digit using the same step. Adjust the difficulty to match your level, play at your own pace, and review completed sessions in Training History. With a clean, distraction-free interface and no ads or in-app purchases, Num Trainer keeps number practice simple and focused.
CapWords
Capture words from real life using your camera and instantly create smart flashcards. AI provides definitions with context, and a spaced repetition system helps you remember them. Perfect for students, travelers, and professionals looking to expand their vocabulary.
- AI text recognition from photos
- AI-powered definitions with context
- Photo-linked vocabulary flashcards
- Intelligent spaced repetition review
- Progress tracking
- Offline word bank
- Multiple language support
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⊕ Apple Design Awards 2025 Winner ⊕ App Store Awards App of the Year ⊕ App Store APP OF THE DAY ⊕ App Store Editor's Choice Turn the world into your vocabulary book. CapWords is the first app that lets you capture words from real life and instantly turn them into smart flashcards. See an interesting word on a sign, book, or screen? Just snap a photo, and CapWords will recognize the text, provide AI-powered definitions, and add it to your personal vocabulary library. HOW IT WORKS • Point your camera at any text • AI instantly recognizes and extracts words • Get smart definitions with context • Words automatically saved to your vocabulary • Review with intelligent spaced repetition WHY CAPWORDS? Traditional vocabulary apps make you type words manually or browse pre-made lists. CapWords changes that completely. CAPTURE FROM REAL LIFE See a word while reading, traveling, or studying? Snap it. The photo becomes your memory anchor, helping you remember where and when you learned each word. AI-POWERED UNDERSTANDING Our AI doesn't just give you dictionary definitions. It analyzes context from your photo to provide relevant meanings, example sentences, and usage notes. SMART REVIEW SYSTEM Forget about forgetting. CapWords uses spaced repetition algorithms to remind you to review words just before you'd forget them. VISUAL MEMORY BOOST Studies show visual context dramatically improves retention. Each word stays connected to the image where you found it. PERFECT FOR ⊕ Students - Build vocabulary from textbooks and articles ⊕ Travelers - Learn local words from signs and menus ⊕ Readers - Capture unfamiliar words from books ⊕ Professionals - Master industry terminology ⊕ Test Prep - GRE, TOEFL, IELTS vocabulary building FEATURES ⊕ AI recognizes words instantly ⊕ Photo-linked flashcards ⊕ Spaced repetition review ⊕ Progress tracking ⊕ Offline word bank ⊕ Export to other apps ⊕ Multiple language support LEARNING BACKED BY SCIENCE CapWords combines three proven learning techniques: 1. Visual Association - Images boost memory retention by 65% 2. Active Capture - Finding words yourself beats passive lists 3. Spaced Repetition - Review at optimal intervals Stop typing words into apps. Start capturing them from life. Download CapWords and turn every moment into a learning opportunity. FEEDBACK & SUPPORT Questions or ideas? We’d love to hear from you: support@capwords.app LEGAL Privacy Policy: https://capwords.app/privacy Terms of Use: https://capwords.app/terms
Screenshots
Verdict
The clearest difference is in-app purchases: Num Trainer at none against CapWords's 7. Num Trainer also leads on review sentiment (100% vs 71%) and rating (5.0 vs 4.7). CapWords's advantage is ratings volume (545 vs 2) and update cadence (every 5 days vs every 3 weeks). On price, ads, device support and iOS requirement 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. CapWords sells 6 in-app purchases, starting at $4.99 per month. Num Trainer asks for nothing beyond the download.
Num Trainer holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: CapWords has 545 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 100% of Num Trainer's written reviews are positive against 71% of CapWords's.
Num Trainer ships an update every 3 weeks, CapWords every 5 days. The most recent releases landed on October 4, 2026 and October 15, 2026 respectively.
| Parameter | Num Trainer | CapWords |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | 4.7 (545 ratings) |
| Positive reviews | 100.0% of reviews — better | 71.1% of reviews |
| Number of ratings | 2 | 545 — better |
| Update frequency | Every 3 weeks | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 18.0 | 17.0 — better |
| Further details — not scored | ||
| Size | 2 MB | 235 MB |
| Age rating | 4+ | 4+ |
| Developer | Yang Wang | HappyPlan Tech |
Customer experience
Num Trainer
CapWords
Bugs and requests
Num Trainer
Not enough reviews yet to summarise bugs or requests.
CapWords
Reported bugs
1 issue- Some website links not working properly
Requested features
5 requests- Add ability to import existing flashcards
- Integrate with other language learning apps
- Provide option to change native language
- Add home screen widgets
- Expand object description capabilities
In-app purchases
Num Trainer
No in-app purchases
CapWords
- Premium-Monthly-b$4.991 Month
- Premium-Monthly$5.991 Month
- Premium-Yearly3 Days trial$19.991 Year
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- Premium-Yearly3 Days trial2 variants$29.991 Year
- Premium-Yearly-Promo1 Year trial$29.991 Year
- Premium-Yearly-Promo-b1 Year trial$29.991 Year









