# 67 Duos vs 67s Challenge

The clearest difference is in-app purchases: 67 Duos at none against 67s Challenge's 1. 67 Duos also leads on ratings volume (9 vs 1) and iOS requirement (13.0 vs 17.6). 67s Challenge's advantage is rating (5.0 vs 4.6) and review sentiment (100% vs 80%). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. 67s Challenge sells 1 one-off in-app purchase. 67 Duos asks for nothing beyond the download.

67s Challenge holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: 67 Duos has 9 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 80% of 67 Duos's written reviews are positive against 100% of 67s Challenge's.

67 Duos ships an update every 2 days, 67s Challenge every 3 days. The most recent releases landed on October 24, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | 67 Duos | 67s Challenge |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (9 ratings)](https://appshunter.io/ios/app/67-duos/id6756528504/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/67s-challenge/id6756968825/reviews)** |
| Number of ratings | **9** | 1 |
| Positive reviews | 80.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 2 days** | Every 3 days |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 32 MB | 8 MB |
| Requires iOS | **13.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Matthew Margulis](https://appshunter.io/developer/1838211385) | [Kalyan Lakkavarapukota](https://appshunter.io/developer/1855873339) |

## What reviewers say

### 67 Duos

[App page](https://appshunter.io/ios/app/67-duos/id6756528504)

A simple yet addictive game where players tap numbers in a specific sequence to build combos. Offers different modes for quick play, endless challenges, or relaxed sessions. Customize the visual theme and compete globally for high scores.

**Highlights:** Sequence tapping gameplay, Blitz, Survival, and Zen modes, Customizable themes (kittens, puppies), Global leaderboard, Easy to learn, hard to master

**Features:** macOS Compatibility

**In-app purchases:** none


### 67s Challenge

[App page](https://appshunter.io/ios/app/67s-challenge/id6756968825)

Engage in rapid-fire micro-challenges within a 67-second time limit. Test your speed, focus, and reflexes by solving unique puzzles that change with each play. Compete globally on daily leaderboards or challenge friends.

**Highlights:** 67-second time limit challenges, Tests speed, focus, and reflexes, Daily global leaderboards, Challenge friends, New challenges each run, Unlock unlimited plays

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Unlimited – $2.99 | $2.99 | one-time |


## Frequently asked questions

### Is 67 Duos free?

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

### Is 67s Challenge free?

67s Challenge is free to download, with in-app purchases available.

### Which has better reviews, 67 Duos or 67s Challenge?

67s Challenge is rated higher. 67 Duos averages 4.6 out of 5 from 9 ratings, while 67s Challenge averages 5.0 from 1 ratings.

### Do 67 Duos or 67s Challenge have ads?

Both 67 Duos and 67s Challenge show ads.

### Which is updated more often, 67 Duos or 67s Challenge?

67 Duos ships an update every 2 days, and 67s Challenge every 3 days. Most recently, 67 Duos was updated on October 24, 2026 and 67s Challenge on October 22, 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.*