Subnet Calculator + vs CIDR
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Subnet Calculator +
This utility app simplifies network calculations for professionals and students. It offers tools for IPv4 and IPv6 subnetting, including live CIDR sliders and subnet splitting. Results can be easily shared or copied.
- IPv4 subnet calculator with CIDR slider
- Subnet Splitter for VLSM
- IPv6 calculator with prefix slider
- Auto-detect device IP from Wi-Fi
- Navigate adjacent subnets
- Share or copy results
- Native Mac support
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SubnetCalc is a fast, intuitive subnet calculator for networking professionals and students. Features: - IPv4 subnet calculator with live CIDR slider (1-30) - Subnet Splitter for equal-split and VLSM subdivision - IPv6 calculator with prefix slider (1-128) - Auto-detect your device's IP and subnet from Wi-Fi - Navigate between adjacent subnets - Share or copy results instantly - Native Mac support via Mac Catalyst Enter any IP address, adjust the CIDR prefix with the slider, and instantly see: - Subnet mask - Network address - Broadcast address - Usable host range - Maximum hosts - Wildcard mask The Subnet Splitter lets you divide a network into equal subnets or use VLSM to allocate subnets by host count. Perfect for network planning and design. No ads. No tracking. No subscription.
CIDR
This utility calculates IP address ranges from an IP address and subnet mask. It supports IPv4 calculations, including prefix display, address range counts, and bit notation. Useful for quick CIDR notation checks and subnet mask conversions.
- IP address range calculation
- Subnet mask to CIDR conversion
- IPv4 prefix display
- Number of address ranges
- Bit notation display
- Quick reference table
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Calculate the IP address range from the IP address and subnet mask. It can be used to calculate IPv4 addresses, including prefix display, number of address ranges, and bit notation. CIDR calculation, when you want to check CIDR notation quickly. To convert subnet mask to CIDR notation. It can also be used as a quick reference table for subnet masks. Bit notation is also available, so it is suitable for learning IPv4.
Screenshots
Verdict
The clearest difference is rating: CIDR at 5.0 against Subnet Calculator +'s 4.0. CIDR also leads on update cadence (every 3 weeks vs every 64 months) and iOS requirement (15.6 vs 18.6). Subnet Calculator +'s advantage is ratings volume (7 vs 1). On price, ads, in-app purchases and monetization model 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. Subnet Calculator + sells 4 one-off in-app purchases and CIDR sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
CIDR holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: Subnet Calculator + has 7 ratings behind it against 1, so its average is the more settled of the two.
Subnet Calculator + ships an update every 64 months, CIDR every 3 weeks. The most recent releases landed on September 27, 2026 and October 2, 2026 respectively.
| Parameter | Subnet Calculator + | CIDR |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (7 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 72.7% of reviews | — |
| Number of ratings | 7 — better | 1 |
| Update frequency | Every 64 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free | Free |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Requires iOS | 18.6 | 15.6 — better |
| Further details — not scored | ||
| Size | 1 MB | 23 MB |
| Age rating | 4+ | 4+ |
| Developer | Steven Eppler | akira ohmachi |
Customer experience
Subnet Calculator +
CIDR
In-app purchases
Subnet Calculator +
- Small Tip$0.99
- Medium Tip$1.99
- Large Tip$4.99
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- Huge Tip$9.99
CIDR
- Remove Ads$1.99
Questions
Is Subnet Calculator + free?
Is CIDR free?
Which has better reviews, Subnet Calculator + or CIDR?
Do Subnet Calculator + or CIDR have ads?
Which is updated more often, Subnet Calculator + or CIDR?
Other comparisons
