Katnet vs SunStem
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Katnet
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katnet is a network discovery and connectivity toolkit for IT Professionals. See which hosts are online, which ports respond, and what each device advertises-then jump straight into SSH or VNC when you need a terminal or remote desktop. Discover devices Run a TCP sweep across your subnet (with a sensible default port set, or your own list). Results merge with Bonjour browsing and SSDP/UPnP-style hints so cameras, printers, NAS boxes, and servers show up with clearer context. Enrichment includes lightweight probes where appropriate (for example HTTP, TLS certificate summaries, SSH banners, and SNMP where reachable) to build a richer fingerprint-without sending your scan results to us. Built-in clients Use SSH for shell access and VNC for remote screen sharing to machines you are authorized to manage. A URL test tab helps verify HTTP/HTTPS reachability and status. A Status view summarizes local addressing and network context. Privacy katnet is built for on-network, on-device use. Discovery talks to your routers, printers, and servers over local Wi-Fi or Ethernet. You control when scanning runs. Grant Local Network access when iOS asks so multicast, Bonjour, and LAN probes can work. Important Only scan networks and systems you own or have explicit permission to test. Unauthorized scanning or access may violate law or policy.
SunStem
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SunStem is an offline solar and battery calculator for RVs, vans, boats and cabins. Build a saved system profile, then estimate battery runtime, solar yield, reserve risk and safer system sizing on iPhone or iPad. CALCULATE BATTERY RUNTIME - Compare load, solar and usable battery capacity - Forecast the next charge window and hours to the reserve floor - Work offline from a saved profile and local inputs SIZE AN OFF-GRID SYSTEM - Review battery, PV, MPPT, inverter, wire and fuse planning outputs - Check voltage drop, cold Voc and fuse-versus-wire safety gates - See assumptions and deterministic calculations from the native core AUDIT THE NEXT SEVEN DAYS - Scan daily reserve risk from saved load and solar assumptions - See what to shed, when to charge and why the risk changed - Export facts for a trip partner, installer or hardware review No cloud account is required before first value. SunStem provides planning estimates and field-review evidence, not engineering certification. It does not control chargers, inverters or BMS hardware. Background or unattended hardware monitoring is not promised in this release.
Screenshots
Verdict
Katnet and SunStem are too close to call on the numbers: across 5 compared parameters โ price, ads, in-app purchases and device support among them โ neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Katnet | SunStem |
|---|---|---|
| Price | Free | Free |
| Update frequency | โ | Weekly |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone | iPhone, iPad โ better |
| Requires iOS | 18.6 | 17.0 โ better |
| Further details โ not scored | ||
| Size | 9 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | IT Guy IO | Dmitriy Motorin |
In-app purchases
Katnet
No in-app purchases
SunStem
No in-app purchases









