# NanoPrompt vs Subnet CIDR Pro

The clearest difference is price: NanoPrompt at Free against Subnet CIDR Pro's $0.99. Subnet CIDR Pro's advantage is in-app purchases (none vs 1) and update cadence (fortnightly vs monthly). On ads and device support there is nothing between them.

NanoPrompt is free to download; Subnet CIDR Pro costs $0.99 up front. NanoPrompt sells 1 one-off in-app purchase. Subnet CIDR Pro asks for nothing beyond the download.

NanoPrompt ships an update monthly, Subnet CIDR Pro fortnightly. The most recent releases landed on October 31, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | NanoPrompt | Subnet CIDR Pro |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/subnet-cidr-pro/id6816397989/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Fortnightly** |
| Monetization | — | Paid |
| Size | 10 MB | 2 MB |
| Requires iOS | 18.6 | **16.0** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [恒俭 董](https://appshunter.io/developer/947356968) | [超 张](https://appshunter.io/developer/1895478141) |

## What reviewers say

### NanoPrompt

[App page](https://appshunter.io/ios/app/nanoprompt/id6778705122)

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| NanoPrompt Pro | $2.99 | one-time |


### Subnet CIDR Pro

[App page](https://appshunter.io/ios/app/subnet-cidr-pro/id6816397989)

This app is a fast and accurate IPv4 subnet calculator and visual planner for network professionals and students. It offers instant calculations, VLSM planning, and a comprehensive CIDR reference, all while operating offline with no ads or tracking.

**Highlights:** Instant IPv4 & CIDR calculation, Visual VLSM subnet planner, Complete CIDR & mask reference, Offline operation, No ads or tracking, One-tap copying

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

**In-app purchases:** none


## Frequently asked questions

### Is NanoPrompt free?

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

### Is Subnet CIDR Pro free?

Subnet CIDR Pro costs $0.99, with no in-app purchases.

### Do NanoPrompt or Subnet CIDR Pro have ads?

Neither NanoPrompt nor Subnet CIDR Pro shows ads.

### Which is updated more often, NanoPrompt or Subnet CIDR Pro?

NanoPrompt ships an update monthly, and Subnet CIDR Pro fortnightly. Most recently, NanoPrompt was updated on October 31, 2026 and Subnet CIDR Pro on November 6, 2026.

---

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