# DuotingZ vs Spaced.

The clearest difference is rating: Spaced. at 5.0 against DuotingZ's 4.0. DuotingZ's advantage is in-app purchases (none vs 2) and update cadence (weekly vs every 5 months). On price, ratings volume, ads and monetization model there is nothing between them.

Both are free to download. Spaced. sells 2 one-off in-app purchases. DuotingZ asks for nothing beyond the download.

Spaced. holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

DuotingZ ships an update weekly, Spaced. every 5 months. The most recent releases landed on October 7, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | DuotingZ | Spaced. |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (1 ratings)](https://appshunter.io/ios/app/duotingz/id1438273099/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/spaced/id6762540303/reviews)** |
| Number of ratings | 1 | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 5 months |
| Monetization | Free | Free |
| Size | 33 MB | 6 MB |
| Requires iOS | **10.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [OMTea App](https://appshunter.io/developer/1155973880) | [Clement Boissiere](https://appshunter.io/developer/1696386692) |

## 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


### Spaced.

[App page](https://appshunter.io/ios/app/spaced/id6762540303)

This minimalist flashcard app helps you remember information through spaced repetition. Create custom decks with text, images, or audio, and review efficiently by focusing on what you need to learn. It's designed for privacy with no ads or tracking.

**Highlights:** Spaced repetition learning, Customizable decks, Text, image, and audio cards, AI-assisted deck creation, Starter decks included, Private by design, no ads or tracking

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small Tip | $4.99 | one-time |
| Large Tip | $9.99 | one-time |


## Frequently asked questions

### Is DuotingZ free?

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

### Is Spaced. free?

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

### Which has better reviews, DuotingZ or Spaced.?

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

### Do DuotingZ or Spaced. have ads?

Neither DuotingZ nor Spaced. shows ads.

### Which is updated more often, DuotingZ or Spaced.?

DuotingZ ships an update weekly, and Spaced. every 5 months. Most recently, DuotingZ was updated on October 7, 2026 and Spaced. on October 8, 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.*