# Subnet Plus vs OpSec Purchase

The clearest difference is in-app purchases: OpSec Purchase at none against Subnet Plus's 1. OpSec Purchase also leads on ads (none vs shown) and iOS requirement (13.0 vs 26.0). Subnet Plus's advantage is update cadence (monthly vs every 7 months). On price and device support there is nothing between them.

Both are free to download. Subnet Plus sells 1 one-off in-app purchase. OpSec Purchase asks for nothing beyond the download.

Subnet Plus ships an update monthly, OpSec Purchase every 7 months. The most recent releases landed on October 24, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Subnet Plus | OpSec Purchase |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (57 ratings)](https://appshunter.io/ios/app/subnet-plus-subnet-calculator/id724663668/reviews)** | — |
| Number of ratings | **57** | — |
| Positive reviews | 89.2% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Monthly** | Every 7 months |
| Monetization | Free | — |
| Size | 18 MB | 8 MB |
| Requires iOS | 26.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ted Trentler](https://appshunter.io/developer/380264826) | [Opsec Security Group, Inc.](https://appshunter.io/developer/1046385060) |

## What reviewers say

### Subnet Plus

[App page](https://appshunter.io/ios/app/subnet-plus-subnet-calculator/id724663668)

Calculate IP subnets with ease on your iPhone or iPad. This tool helps visualize binary and hex information for subnets, aiding in network studies and professional calculations. Save your calculated networks for future reference.

**Highlights:** Subnet calculation, Save calculated networks, Binary and hex display, Network address ranges, Broadcast IP addresses, Study aid for networking exams

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| remove Ads | $4.99 | one-time |

**What reviewers like**

- 👍 Convenient and simple interface
- 👍 Practical and useful tool
- 👍 Saves locations and provides needed information
- 👍 Smart layout
- 👍 Great use of sliding octets for real-time effects

**What reviewers complain about**

- 🐛 Interface needs work
- 🐛 Text in subnet netmask field too large
- 🐛 Last octet not visible
- 🐛 No apparent way to enlarge field or change text
- 🐛 No landscape mode for iPad Pro

**Reported bugs**

- Text in subnet netmask field too large, last octet not visible
- Values truncated, cannot view full values
- Subnet mask and IP addresses truncated
- Cannot read all data
- Numbers truncated on iPhone 5s

**Requested features**

- Export option to share saved subnets
- Pay to remove ads
- Landscape mode for iPad Pro
- Update for visualising or adjusting screen on iOS 9
- Ability to type netmask


### OpSec Purchase

[App page](https://appshunter.io/ios/app/opsec-purchase/id1525722092)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Subnet Plus free?

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

### Is OpSec Purchase free?

OpSec Purchase is free to download, with no in-app purchases.

### Do Subnet Plus or OpSec Purchase have ads?

Subnet Plus shows ads; OpSec Purchase does not.

### Which is updated more often, Subnet Plus or OpSec Purchase?

Subnet Plus ships an update monthly, and OpSec Purchase every 7 months. Most recently, Subnet Plus was updated on October 24, 2026 and OpSec Purchase on October 4, 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.*