# Duono vs Zekai

The clearest difference is price: Zekai at Free against Duono's $2.99. Zekai also leads on review sentiment (100% vs 83%) and iOS requirement (15.1 vs 17.0). Duono's advantage is rating (4.0 vs 3.0) and in-app purchases (none vs 3). On ratings volume, update cadence and device support there is nothing between them.

Zekai is free to download; Duono costs $2.99 up front. Zekai sells 3 in-app purchases, starting at $4.99 per month. Duono asks for nothing beyond the download.

Duono holds the better App Store score, 4.0 against 3.0. Both are backed by a comparable volume of ratings — 1 and 2 respectively. Written reviews complicate that: 83% of Duono's written reviews are positive against 100% of Zekai's, so the app with the better star average is not the one people write more warmly about.

Duono ships an update every 2 weeks, Zekai every 9 days. The most recent releases landed on October 11, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | Duono | Zekai |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/duono-binary-logic-puzzle/id6745228046/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/zekai-5-logic-puzzles/id6756515513/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | 83.3% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 weeks | **Every 9 days** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 23 MB | 133 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Fatma Nur Usluer](https://appshunter.io/developer/1811406191) | [Selcuk Guler](https://appshunter.io/developer/1844555670) |

## What reviewers say

### Duono

[App page](https://appshunter.io/ios/app/duono-binary-logic-puzzle/id6745228046)

Engage in a unique binary logic puzzle adventure with a beautiful sun and moon theme. Solve tricky tango-style patterns using pure logic, with no guessing required. Enjoy offline play, global competition, and a distraction-free experience.

**Highlights:** Unique Sun & Moon Theme, 100% Offline Gaming, Ad-Free Experience, Game Center Integration, Multiple Difficulty Levels, Smart Hint System, Unlimited Undo

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

**In-app purchases:** none


### Zekai

[App page](https://appshunter.io/ios/app/zekai-5-logic-puzzles/id6756515513)

This app offers five premium logic puzzles, including Sudoku, Word Hunt, Queens, Tango, and Zip, with over 20,000 hand-crafted levels. Enjoy daily challenges, offline play, and a minimalist design without forced subscriptions or intrusive ads.

**Highlights:** 5 curated logic games in one app, 20,000+ hand-crafted levels, Daily goal and streaks, XP progression and achievements, Offline play, Minimalist design with dark mode, No subscription required

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $4.99 | per month |
| Yearly | $29.99 | per year |
| Lifetime | $59.99 | one-time |


## Frequently asked questions

### Is Duono free?

Duono costs $2.99, with no in-app purchases.

### Is Zekai free?

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

### Which has better reviews, Duono or Zekai?

Duono is rated higher. Duono averages 4.0 out of 5 from 1 ratings, while Zekai averages 3.0 from 2 ratings.

### Do Duono or Zekai have ads?

Zekai shows ads; Duono does not.

### Which is updated more often, Duono or Zekai?

Duono ships an update every 2 weeks, and Zekai every 9 days. Most recently, Duono was updated on October 11, 2026 and Zekai on September 26, 2026.

---

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