Sinonimos ES vs Flashka
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sinonimos ES
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Aplicación de Sinónimos: Explora palabras similares con facilidad y cuenta con soporte en la búsqueda y verificación ortográfica, incluso sin conexión a internet (offline).
Flashka
Transform notes, PDFs, and lecture slides into interactive flashcards and AI-powered quizzes. Utilize spaced repetition and a personal AI tutor to master material and ace exams.
- AI-generated flashcards from notes/PDFs
- Spaced-repetition study algorithms
- AI-powered mock quizzes
- Personal AI tutor for explanations
- Import handwritten notes and photos
- 24/7 study assistance
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Learn 10× faster and ace every exam with Flashka — the best AI flashcard and quizzes app. Turn any notes, PDFs, photos or lecture slides into dynamic flashcards and mock quizzes in seconds. With Flashka you can: Import any material Upload your handwritten notes, PDFs, or photos, and highlight and interact with them Generate flashcards Let our AI create cards exclusively from your material, forget endless writing. Study in the most effective way Use spaced‑repetition algorithms that adapt to your studying Test your knowledge Practice with AI‑powered quizzes & mock exams, from your flashcards Get 24/7 professor on your side Ask Professor Ka, your personal AI tutor, for instant explanations, memorisations and chat. Join +2M students who’ve improved grades and conquered exams with Flashka. Download now and start studying smarter. Terms of Use: https://flashka.ai/terms Privacy Policy: https://flashka.ai/privacy
Screenshots
Verdict
The clearest difference is in-app purchases: Sinonimos ES at none against Flashka's 4. Sinonimos ES also leads on ads (none vs shown) and iOS requirement (12.0 vs 16.4). Flashka's advantage is update cadence (fortnightly vs every 11 months). On price 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. Flashka sells 4 in-app purchases, starting at $3.99 per month. Sinonimos ES asks for nothing beyond the download.
Sinonimos ES ships an update every 11 months, Flashka fortnightly. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.
| Parameter | Sinonimos ES | Flashka |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.8 (398 ratings) — better |
| Positive reviews | — | 79.2% of reviews |
| Number of ratings | — | 398 — better |
| Update frequency | Every 11 months | Fortnightly — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 12.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 65 MB | 173 MB |
| Age rating | 17+ | 4+ |
| Developer | Ivo Fernandes | Flashka OÜ |
In-app purchases
Sinonimos ES
No in-app purchases
Flashka
- Wizard Subscription$3.991 Month
- Wizard Subscription$9.991 Month
- Black Friday Discount$29.991 Year
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- Wizard Subscription$59.991 Year
