# Duono vs Crowns Keeper

The clearest difference is price: Crowns Keeper at Free against Duono's $2.99. Crowns Keeper also leads on rating (5.0 vs 4.0). Duono's advantage is in-app purchases (none vs 1) and update cadence (every 2 weeks vs every 3 months). On ratings volume, ads, device support and iOS requirement there is nothing between them.

Crowns Keeper is free to download; Duono costs $2.99 up front. Crowns Keeper sells 1 one-off in-app purchase. Duono asks for nothing beyond the download.

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

Duono ships an update every 2 weeks, Crowns Keeper every 3 months. The most recent releases landed on September 10, 2026 and August 29, 2026 respectively.

## The numbers

| Metric | Duono | Crowns Keeper |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [4.0 (1 ratings)](https://appshunter.io/ios/app/duono-binary-logic-puzzle/id6745228046/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/crowns-keeper/id6757496273/reviews)** |
| Number of ratings | 1 | 1 |
| Positive reviews | 83.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 months |
| Monetization | Paid | **Free** |
| Size | 23 MB | 22 MB |
| Requires iOS | **17.0** | 18.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Fatma Nur Usluer](https://appshunter.io/developer/1811406191) | [ioloro](https://appshunter.io/developer/1867266707) |

## 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


### Crowns Keeper

[App page](https://appshunter.io/ios/app/crowns-keeper/id6757496273)

This app simplifies scoring for card games like Five Crowns, automatically tracking rounds and totals. It remembers wild cards and displays final standings, making game nights easier. It also functions as a flexible scorekeeper for various other card games.

**Highlights:** Automatic round tracking, Running score totals, Wild card memory, Final standings display, Supports various card games, Lock Screen and Dynamic Island integration, Siri and Shortcuts support

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Crowns | $0.99 | one-time |


## Frequently asked questions

### Is Duono free?

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

### Is Crowns Keeper free?

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

### Which has better reviews, Duono or Crowns Keeper?

Crowns Keeper is rated higher. Duono averages 4.0 out of 5 from 1 ratings, while Crowns Keeper averages 5.0 from 1 ratings.

### Do Duono or Crowns Keeper have ads?

Neither Duono nor Crowns Keeper shows ads.

### Which is updated more often, Duono or Crowns Keeper?

Duono ships an update every 2 weeks, and Crowns Keeper every 3 months. Most recently, Duono was updated on September 10, 2026 and Crowns Keeper on August 29, 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.*