IPMask vs VLSM | Subnet
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
IPMask
This utility helps calculate IP network addresses and subnetworks for IPv4. It assists in understanding IP addressing functions like host identification and location addressing within a network. The tool is useful for dividing networks into smaller subnetworks through subnetting.
- IP network address calculation
- Subnetwork subdivision
- Host identification
- Location addressing
- IPv4 support
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IPMask works out an IPv4 network from an address and a mask: network and broadcast address, first and last host, number of hosts, netmask and wildcard. • Type the address the way you have it: 192.168.1.1, 192.168.1.1/22 or with a dotted mask. • Move the mask slider and watch the 32 bits split into the network part and the host part. • See the address type at a glance: private, public, loopback, link-local, multicast. • Switch to the binary view to see the address, netmask and network bit by bit. • Copy the whole result as text or share it. • On Apple Watch: enter an address with a keypad, turn the Digital Crown to set the prefix and read the result on your wrist. /31 point-to-point links (RFC 3021) and /32 host routes are handled correctly. Made for network engineers, students and anyone who sets up a router at home. The app works offline; it needs a connection only for the small ad banner.
VLSM | Subnet
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Network, Mask, Wildcard, Broadcast, First Host, Last Host, Requested hosts, Available hosts
Screenshots
Verdict
The clearest difference is ads: VLSM | Subnet at none against IPMask's shown. VLSM | Subnet also leads on iOS requirement (15.6 vs 17.0). On price, update cadence, in-app purchases and device support 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.
IPMask ships an update every 5 months, VLSM | Subnet every 9 months. The most recent releases landed on November 1, 2026 and November 8, 2026 respectively.
| Parameter | IPMask | VLSM | Subnet |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 5 months — better | Every 9 months |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Requires iOS | 17.0 | 15.6 — better |
| Further details — not scored | ||
| Size | 5 MB | 23 MB |
| Age rating | 4+ | 4+ |
| Developer | Aleksei Neronov | Edwin Mejia |
In-app purchases
IPMask
No in-app purchases
VLSM | Subnet
No in-app purchases
Questions
Is IPMask free?
Is VLSM | Subnet free?
Do IPMask or VLSM | Subnet have ads?
Which is updated more often, IPMask or VLSM | Subnet?
Other comparisons
