# DuotingZ vs Flipside

The clearest difference is rating: Flipside at 5.0 against DuotingZ's 4.0. Flipside also leads on ratings volume (6 vs 1). DuotingZ's advantage is in-app purchases (none vs 1) and update cadence (weekly vs fortnightly). On price, review sentiment and ads there is nothing between them.

Both are free to download. Flipside sells 1 one-off in-app purchase. DuotingZ asks for nothing beyond the download.

Flipside holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: Flipside has 6 ratings behind it against 1, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

DuotingZ ships an update weekly, Flipside fortnightly. The most recent releases landed on October 7, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | DuotingZ | Flipside |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (1 ratings)](https://appshunter.io/ios/app/duotingz/id1438273099/reviews) | **[5.0 (6 ratings)](https://appshunter.io/ios/app/flipside-korean-flashcards/id6761292251/reviews)** |
| Number of ratings | 1 | **6** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Fortnightly |
| Monetization | **Free** | Paid |
| Size | 33 MB | 18 MB |
| Requires iOS | **10.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [OMTea App](https://appshunter.io/developer/1155973880) | [HoneyReserve LLC](https://appshunter.io/developer/1888707209) |

## What reviewers say

### DuotingZ

[App page](https://appshunter.io/ios/app/duotingz/id1438273099)

This app allows users to repeatedly play audio files from their iPod library, including albums, audiobooks, and podcasts. It features adjustable playback speeds, sound wave visualization, and speech recognition in 58 languages. The app also supports background playback and remote control functionality.

**Highlights:** iPod library integration, Adjustable playback speed, Repeat playback options, Speech recognition (58 languages), Sound wave visualization, Background playback, Remote control

**Features:** macOS Compatibility

**In-app purchases:** none


### Flipside

[App page](https://appshunter.io/ios/app/flipside-korean-flashcards/id6761292251)

Learn Korean with interactive flashcards, a guided Hangul course, and a comprehensive dictionary. Features spaced repetition, K-drama themed decks, and offline access. Buy once, own forever.

**Highlights:** Guided Hangul course, Built-in Korean and English dictionaries, Spaced repetition system, Curated K-drama starter packs, Offline access, Quiz mode with Tinder-style gestures

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Flipside — Lifetime Unlock | $7.99 | one-time |


## Frequently asked questions

### Is DuotingZ free?

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

### Is Flipside free?

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

### Which has better reviews, DuotingZ or Flipside?

Flipside is rated higher. DuotingZ averages 4.0 out of 5 from 1 ratings, while Flipside averages 5.0 from 6 ratings.

### Do DuotingZ or Flipside have ads?

Neither DuotingZ nor Flipside shows ads.

### Which is updated more often, DuotingZ or Flipside?

DuotingZ ships an update weekly, and Flipside fortnightly. Most recently, DuotingZ was updated on October 7, 2026 and Flipside on October 18, 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.*