Sandflash vs FlashZen
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sandflash
This app provides a straightforward digital flashcard experience for studying and memorization. It aims to replicate the simplicity of traditional flashcards for educational purposes.
- Digital flashcard creation
- Study and memorization tool
- Simple user interface
- Free to use
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A free and simple vibe coded flashcard app for learning purposes. Sandflash's goal is to mimic basic flashcards used for studying or memorization.
FlashZen
This app helps you learn vocabulary and build memory through active recall and spaced repetition. It offers a clean interface, allows custom definitions, and generates practice sentences with corrections. It's designed for efficient, focused study.
- Spaced repetition system
- 800+ high-frequency English words
- Custom definitions and translations
- Sentence generation with corrections
- Clean flashcard interface
- Import custom decks
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With FlashZen you get: • 800+ high-frequency English words • Organized for efficient learning • Clean flashcard interface • Add your own definitions or translations • Generate sentences from known words and get corrections Active recall builds real memory. Built-In Spaced Repetition ---- FlashZen uses spaced repetition to help you: • Review at the perfect time • Strengthen long-term memory • Avoid forgetting • Study efficiently Perfect for: - Students - TOEFL / IELTS prep - Self-learners - Travelers - Vocabulary building ---- Why FlashZen? • No complex setup • No technical interface • Option to import decks • Clean, focused experience • 100% free Open the app. Start learning.
Screenshots
Verdict
The clearest difference is ads: Sandflash at none against FlashZen's shown. Sandflash also leads on monetization model (free vs ad-supported). FlashZen's advantage is update cadence (every 2 weeks vs monthly). On price, rating, ratings volume 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. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for Sandflash against 5.0 for FlashZen. Both are backed by a comparable volume of ratings — 3 and 2 respectively.
Sandflash ships an update monthly, FlashZen every 2 weeks. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.
| Parameter | Sandflash | FlashZen |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) | 5.0 (2 ratings) |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 3 — better | 2 |
| Update frequency | Monthly | Every 2 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.6 | 15.1 — better |
| Further details — not scored | ||
| Size | 2 MB | 29 MB |
| Age rating | 4+ | 4+ |
| Developer | Joshua Smith | Baptiste Fehrenbach |
Customer experience
Sandflash
FlashZen
In-app purchases
Sandflash
No in-app purchases
FlashZen
No in-app purchases
