Simple Cidr vs Halo OS
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Simple Cidr
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I often found that I didn't want a complicated calculator to translate Cidr notation into subnet mask and so fourth. So I made a simple one...
Halo OS
Transform your iPhone or iPad into a functional desktop computer. Connect external displays, keyboards, and mice to navigate a web browser and file explorer with ease.
- External monitor support
- Bluetooth keyboard and mouse compatibility
- Web browser
- File explorer
- TXT file reader
- Window management
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Initial Project to turn your iPhone/iPad into a computer. How to use this app: - Connect your iPhone/iPad to an external monitor (use Lightning Digital AV Adapter, HDMI (for iPad) or use Apple AirPlay) - Connect Bluetooth Mouse and Bluetooth Keyboard (if you are using iPhone you gonna need to activate Assistive Touch and screen orientation change to Off so you can rotate the iPhone screen) Feature: Web browser File Explorer with a txt file reader. -- How to use the app --- Double click to open files and folders Click the window top bar so that windows became top window Double click top bar will expand the screen
Screenshots
Verdict
The clearest difference is iOS requirement: Halo OS at 15.2 against Simple Cidr's 17.6. On price, update cadence, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Simple Cidr ships an update every 30 months, Halo OS every 26 months. The most recent releases landed on September 8, 2026 and August 14, 2026 respectively.
| Parameter | Simple Cidr | Halo OS |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.3 (8 ratings) — better |
| Positive reviews | — | 75.0% of reviews |
| Number of ratings | — | 8 — better |
| Update frequency | Every 30 months | Every 26 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.6 | 15.2 — better |
| Further details — not scored | ||
| Size | 0 MB | 5 MB |
| Age rating | 4+ | 17+ |
| Developer | Luke Pilkington | Tiago Mendes |
In-app purchases
Simple Cidr
No in-app purchases
Halo OS
No in-app purchases
