# ZeroDay Dev vs FlipStudy

The clearest difference is in-app purchases: ZeroDay Dev at none against FlipStudy's 1. ZeroDay Dev also leads on update cadence (weekly vs fortnightly) and ratings volume (4 vs 1). FlipStudy's advantage is rating (5.0 vs 4.8). On price, ads, monetization model and device support there is nothing between them.

Both are free to download. FlipStudy sells 1 one-off in-app purchase. ZeroDay Dev asks for nothing beyond the download.

FlipStudy holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 4 and 1 respectively.

ZeroDay Dev ships an update weekly, FlipStudy fortnightly. The most recent releases landed on October 31, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | ZeroDay Dev | FlipStudy |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (4 ratings)](https://appshunter.io/ios/app/zeroday-dev/id6760129673/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/flipstudy-flashcards/id6786766266/reviews)** |
| Number of ratings | **4** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Fortnightly |
| Monetization | Free | Free |
| Size | 97 MB | 85 MB |
| Requires iOS | **17.0** | 26.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [John Lawniczak](https://appshunter.io/developer/1882793043) | [Richard Wheatley](https://appshunter.io/developer/6786766268) |

## What reviewers say

### ZeroDay Dev

[App page](https://appshunter.io/ios/app/zeroday-dev/id6760129673)

Learn secure coding and blockchain security through hands-on challenges and real-world exploit analysis. Practice building exploit intuition with interactive exercises and prepare for security assessments with timed tests. Offers curated learning tracks and offline access.

**Highlights:** Hands-on coding challenges, Real-world exploit analysis, Interactive practice exercises, Timed security assessment exams, Curated learning tracks, Offline-first functionality, Progress tracking and gamification

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### FlipStudy

[App page](https://appshunter.io/ios/app/flipstudy-flashcards/id6786766266)

Create and study flashcards using spaced repetition for effective learning. Translate words instantly and hear pronunciations in their native languages. This private, offline-friendly app helps you focus on what you need to learn most.

**Highlights:** Spaced repetition learning, Built-in translator, Native language audio pronunciation, Offline study mode, Private and account-free, Distraction-free interface

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| FlipStudy Pro | $0.99 | one-time |


## Frequently asked questions

### Is ZeroDay Dev free?

ZeroDay Dev is free to download, with no in-app purchases.

### Is FlipStudy free?

FlipStudy is free to download, with in-app purchases available.

### Which has better reviews, ZeroDay Dev or FlipStudy?

FlipStudy is rated higher. ZeroDay Dev averages 4.8 out of 5 from 4 ratings, while FlipStudy averages 5.0 from 1 ratings.

### Do ZeroDay Dev or FlipStudy have ads?

Neither ZeroDay Dev nor FlipStudy shows ads.

### Which is updated more often, ZeroDay Dev or FlipStudy?

ZeroDay Dev ships an update weekly, and FlipStudy fortnightly. Most recently, ZeroDay Dev was updated on October 31, 2026 and FlipStudy on October 24, 2026.

---

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