# Blue Arch vs 9R KSA

The clearest difference is rating: Blue Arch at 3.5 against 9R KSA's 2.3. Blue Arch also leads on iOS requirement (11.0 vs 14.0). 9R KSA's advantage is update cadence (every 3 weeks vs every 14 months) and ratings volume (12 vs 4). On price, review sentiment, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Blue Arch holds the better App Store score, 3.5 against 2.3. Both are backed by a comparable volume of ratings — 4 and 12 respectively. Written reviews point the same way: 30% of Blue Arch's written reviews are positive against 23% of 9R KSA's.

Blue Arch ships an update every 14 months, 9R KSA every 3 weeks. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Blue Arch | 9R KSA |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.5 (4 ratings)](https://appshunter.io/ios/app/blue-arch/id1447597831/reviews)** | [2.3 (12 ratings)](https://appshunter.io/ios/app/9r-ksa/id6451135575/reviews) |
| Number of ratings | 4 | **12** |
| Positive reviews | **29.6% of reviews** | 22.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 14 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 3 MB | 96 MB |
| Requires iOS | **11.0** | 14.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [MAJED ALSUBAIE](https://appshunter.io/developer/1653762037) | [9 Round Company Ltd.](https://appshunter.io/developer/1703983493) |

## What reviewers say

### Blue Arch

[App page](https://appshunter.io/ios/app/blue-arch/id1447597831)

Control Bluetooth-enabled scent diffusers with this app. Adjust scent intensity, frequency, and operating schedules. Manage multiple devices, name them, and secure them with custom passwords.

**Highlights:** Turn diffusers on and off, Control scent frequency and intensity, Set working hours and days, Manage and name multiple diffusers, Change diffuser passwords

**In-app purchases:** none


### 9R KSA

[App page](https://appshunter.io/ios/app/9r-ksa/id6451135575)

Manage your fitness membership, subscribe to new packages, and access the club using a QR code. Track your visits, report issues, and find club locations with ease.

**Highlights:** Manage membership packages, Subscribe to new packages, QR code club entry, Request membership freeze/extension, Manage profile, Report issues and track tickets, Find clubs on map

**In-app purchases:** none


## Frequently asked questions

### Is Blue Arch free?

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

### Is 9R KSA free?

9R KSA is free to download, with no in-app purchases.

### Which has better reviews, Blue Arch or 9R KSA?

Blue Arch is rated higher. Blue Arch averages 3.5 out of 5 from 4 ratings, while 9R KSA averages 2.3 from 12 ratings.

### Do Blue Arch or 9R KSA have ads?

Neither Blue Arch nor 9R KSA shows ads.

### Which is updated more often, Blue Arch or 9R KSA?

Blue Arch ships an update every 14 months, and 9R KSA every 3 weeks. Most recently, Blue Arch was updated on November 2, 2026 and 9R KSA on November 3, 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.*