Comparison

Subnet Plus vs SD+ charge

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

SD+ charge

Features
Read full description

Open the App and scan the QR code of the charging station. Start charging quickly with just one click. Say goodbye to the cumbersome card insertion process. You can freely choose between gun A or gun B to meet the charging needs of different vehicle models. View the charging status visually, precisely grasp the battery level, current, voltage and estimated cost, and have a clear understanding. Support multiple mainstream payment methods, automatic settlement, no need for change, saving time and hassle. No matter where you are, SD+ is your reliable energy partner. Download now and enjoy a new efficient charging experience!

Screenshots

Subnet Plus4 screens
SD+ charge3 screens

Verdict

The call

The clearest difference is in-app purchases: SD+ charge at none against Subnet Plus's 1. SD+ charge also leads on ads (none vs shown) and iOS requirement (13.0 vs 26.0). On price, update cadence 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. SD+ charge asks for nothing beyond the download.

UpkeepUpdate frequency

Subnet Plus ships an update every 2 weeks, SD+ charge every 9 days. The most recent releases landed on September 29, 2026 and September 21, 2026 respectively.

Scorecard3 real differences · 7 level
Subnet Plus versus SD+ charge: the parameters behind the verdict, then further details
ParameterSubnet PlusSD+ charge
PriceFreeFree
Rating4.6 (54 ratings) — better—
Positive reviews89.2% of reviews—
Number of ratings54 — better—
Update frequencyEvery 2 weeksEvery 9 days — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree—
DevicesiPhone, iPadiPhone, iPod
Requires iOS26.013.0 — better
Further details — not scored
Size12 MB65 MB
Age rating4+17+
DeveloperTed TrentlerSANDISOLAR RENEWABLE ENERGY DEVELOPMENT INTERNATIONAL COMPANY LIMITED

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

SD+ charge

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

Subnet Plus

One-time1
  • remove Ads$4.99
None

SD+ charge

No in-app purchases

Questions

Is Subnet Plus free?
Subnet Plus is free to download, with in-app purchases available.
Is SD+ charge free?
SD+ charge is free to download, with no in-app purchases.
Do Subnet Plus or SD+ charge have ads?
Subnet Plus shows ads; SD+ charge does not.
Which is updated more often, Subnet Plus or SD+ charge?
Subnet Plus ships an update every 2 weeks, and SD+ charge every 9 days. Most recently, Subnet Plus was updated on September 29, 2026 and SD+ charge on September 21, 2026.

Other comparisons