Comparison

Subnet Plus vs About Subnet Mask

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Subnet Plus

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
Read full description

Subnet Plus is a fast, beautiful subnet calculator for network engineers, sysadmins, and students — now completely rebuilt for iPhone and iPad. Type any IPv4 or IPv6 address and instantly see the network address, broadcast, usable host range, subnet mask, wildcard mask, prefix length, total and usable hosts, IP class, and address type. A live prefix stepper lets you dial the mask up or down and watch every value update in real time. NETWORK CALCULATIONS • IPv4 and IPv6, auto-detected • Binary view with network/host bits color-coded • Visual address-space map PRO TOOLS • VLSM Designer — carve a network into right-sized subnets and save the plan • CIDR to subnet mask to wildcard converter • Subnet membership — is an address inside a network? • Range to CIDR, and supernet / aggregate • CIDR cheat sheet NETWORK UTILITIES • DNS Lookup — A, AAAA, MX, NS, TXT, CNAME, SOA, SRV, and reverse PTR — using your device's resolver or any IPv4/IPv6 DNS server you add • Ping — round-trip time and packet loss • Traceroute — see the path to any host • Path Monitor (Pro) — a live, MTR-style traceroute with per-hop packet loss and latency • Network Scanner (Pro) — find the active devices on your local network, their names, and open ports • Email Auth — check a domain's SPF, DKIM, and DMARC records SIRI, WIDGETS & APPLE INTELLIGENCE • Explain this — turn any subnet calculation or Email Auth report into a plain-English explanation, generated on-device by Apple Intelligence • Siri & Shortcuts — calculate a subnet, ping a host, check a port, or ask "What's my network?" by voice, and use the same actions in your own Shortcuts • Live Activities — follow Path Monitor and Network Scanner from the Lock Screen and Dynamic Island • Home Screen widget — pin any saved subnet, with a different subnet per widget SAVE & SYNC • Label and save subnets, VLSM plans, and lookups • Everything syncs across your devices with iCloud • Share and export your results Available in 45 languages. Remove ads with a one-time in-app purchase.

About

About Subnet Mask

This utility tool calculates subnet masks based on IP and subnet inputs. It supports both IP and CIDR formats, determines class-based network numbers, and saves previous calculations for easy access. Users can also check the class of any IP address.

Highlights
  • Subnet mask calculation
  • IP and CIDR format support
  • Class-based network number calculation
  • IP class checking
  • Search history
Features
Read full description

I believe. My App makes your life more valuable. You will be the greatest better than ever and shine with me. This is a Subnet Calculator. Enter your IP and Subnet. That is all! Subnet mask could write IP format or CIDR format. It also calculates the class-based network number. The search was saved at history and click to lead result. You can check the class of IP. Thank you. :) If there are any incorrect translations, please contact us by email at starlightlab14@gmail.com

Screenshots

Subnet Plus4 screens
About Subnet Mask4 screens

Verdict

The call

The clearest difference is in-app purchases: About Subnet Mask at none against Subnet Plus's 1. About Subnet Mask also leads on rating (5.0 vs 4.6) and iOS requirement (15.0 vs 26.0). Subnet Plus's advantage is ratings volume (54 vs 1). On price, update cadence, ads 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

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

About Subnet Mask holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Subnet Plus has 54 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Subnet Plus ships an update every 2 weeks, About Subnet Mask every 9 days. The most recent releases landed on September 20, 2026 and September 10, 2026 respectively.

Scorecard5 real differences · 5 level
Subnet Plus versus About Subnet Mask: the parameters behind the verdict, then further details
ParameterSubnet PlusAbout Subnet Mask
PriceFreeFree
Rating4.6 (54 ratings)5.0 (1 ratings) — better
Positive reviews89.2% of reviews—
Number of ratings54 — better1
Update frequencyEvery 2 weeksEvery 9 days — better
AdsYesYes
In-app purchasesYesNo — better
MonetizationFree — betterAd-supported
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS26.015.0 — better
Further details — not scored
Size12 MB9 MB
Age rating4+4+
DeveloperTed TrentlerJaehwa Noh

Customer experience

Subnet Plus

All ratings54 ratings
Positive92.6%
Neutral3.7%
Negative3.7%
Written reviews74 reviews
Positive89.2%
Neutral4.1%
Negative6.8%

About Subnet Mask

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Subnet Plus

Reported bugs

8 issues
  • 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
Show 3 more
  • Fields populated by app cannot be expanded
  • Screen cannot fit full mask on iPad
  • Calculation for number of subnets may be incorrect

Requested features

5 requests
  • 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

About Subnet Mask

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

Subnet Plus

One-time1
  • remove Ads$4.99
None

About Subnet Mask

No in-app purchases

Questions

Is Subnet Plus free?
Subnet Plus is free to download, with in-app purchases available.
Is About Subnet Mask free?
About Subnet Mask is free to download, with no in-app purchases.
Which has better reviews, Subnet Plus or About Subnet Mask?
About Subnet Mask is rated higher. Subnet Plus averages 4.6 out of 5 from 54 ratings, while About Subnet Mask averages 5.0 from 1 ratings.
Do Subnet Plus or About Subnet Mask have ads?
Both Subnet Plus and About Subnet Mask show ads.
Which is updated more often, Subnet Plus or About Subnet Mask?
Subnet Plus ships an update every 2 weeks, and About Subnet Mask every 9 days. Most recently, Subnet Plus was updated on September 20, 2026 and About Subnet Mask on September 10, 2026.

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