# Flashcards by MemZorb vs Read 21 Jumpstart

The clearest difference is in-app purchases: Flashcards by MemZorb at none against Read 21 Jumpstart's 1. Read 21 Jumpstart's advantage is iOS requirement (12.0 vs 16.0). On price, rating, ratings volume and update cadence there is nothing between them.

Both are free to download. Read 21 Jumpstart sells 1 in-app purchase, starting at $4.99 per month. Flashcards by MemZorb asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Flashcards by MemZorb against 5.0 for Read 21 Jumpstart. Both are backed by a comparable volume of ratings — 2 and 3 respectively.

Flashcards by MemZorb ships an update every 5 days, Read 21 Jumpstart every 3 days. The most recent releases landed on October 10, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Flashcards by MemZorb | Read 21 Jumpstart |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/flashcards-by-memzorb/id6503262923/reviews) | [5.0 (3 ratings)](https://appshunter.io/ios/app/read-21-jumpstart/id6745806435/reviews) |
| Number of ratings | 2 | **3** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 days | **Every 3 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 30 MB | 102 MB |
| Requires iOS | 16.0 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Erik Cummins](https://appshunter.io/developer/1315440637) | [Read 21, Corp.](https://appshunter.io/developer/1685163270) |

## What reviewers say

### Flashcards by MemZorb

[App page](https://appshunter.io/ios/app/flashcards-by-memzorb/id6503262923)

This app uses a multi-sensory approach with audio, visual, and text elements to improve vocabulary retention. Create custom flashcards, utilize audio integration, and play a memory match game to accelerate learning for any subject. It's designed for efficient memorization and recall.

**Highlights:** Multi-sensory flash cards, Customizable vocabulary sets, Audio integration, Offline mode, Match It memory game, Vocabulary memorization

**In-app purchases:** none


### Read 21 Jumpstart

[App page](https://appshunter.io/ios/app/read-21-jumpstart/id6745806435)

Master reading fundamentals in 21 days with this app. It uses phonics and decoding strategies, with speech recognition for instant feedback. Suitable for all ages, from elementary kids to adults and ESL learners.

**Highlights:** Phonics and decoding strategies, Speech recognition with instant feedback, Timed reading challenges, Science of Reading methodology, Suitable for all ages, ESL friendly

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Read21: Jumpstart | $4.99 | per month |


## Frequently asked questions

### Is Flashcards by MemZorb free?

Flashcards by MemZorb is free to download, with no in-app purchases.

### Is Read 21 Jumpstart free?

Read 21 Jumpstart is free to download, with in-app purchases available.

### Which has better reviews, Flashcards by MemZorb or Read 21 Jumpstart?

Flashcards by MemZorb and Read 21 Jumpstart are both rated 5.0 out of 5 on the App Store, from 2 and 3 ratings respectively.

### Do Flashcards by MemZorb or Read 21 Jumpstart have ads?

Neither Flashcards by MemZorb nor Read 21 Jumpstart shows ads.

### Which is updated more often, Flashcards by MemZorb or Read 21 Jumpstart?

Flashcards by MemZorb ships an update every 5 days, and Read 21 Jumpstart every 3 days. Most recently, Flashcards by MemZorb was updated on October 10, 2026 and Read 21 Jumpstart on October 15, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*