Comparison

VNSenergy vs FastDDNS

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

Head to head
About

VNSenergy

Features
Read full description

VNSenergy APP to monitor PV plant and PV inverter meter/parameters, provide local/remote setting.

About

FastDDNS

Features
Read full description

FastDDNS is a free Dynamic DNS (DDNS) service with built-in network tools for remote access, device setup, and troubleshooting. Create DDNS hostnames, track IP changes, and diagnose connection problems from one mobile app. FastDDNS is especially useful for CCTV installers, IT technicians, home lab users, and anyone managing devices behind a changing public IP. Why FastDDNS Most DDNS apps stop at hostname management. FastDDNS also includes a LAN scanner, ping with live graphs, DNS and Whois lookups, a CGNAT checker, and a CCTV storage calculator โ€” tools commonly used during on-site setup and troubleshooting. It also provides setup references for common devices and systems, including Dahua, Hikvision, MikroTik, pfSense, DrayTek, Windows clients, and Linux-based environments. What you can do with FastDDNS โ€ข Create and manage DDNS hostnames โ€ข View current IP, last update time, expiry date, and service pack details โ€ข Review recent IP update history โ€ข Check CGNAT when remote access is not working โ€ข Turn on IP change notifications โ€ข Add notes to each hostname for easier organization โ€ข Move hostnames between service packs Built-in network tools Ping Test any hostname or IP address and view real-time latency with min, avg, max, packet loss, standard deviation, and a live graph. LAN Scanner Discover devices on your local network, including IP addresses, gateway details, device types, and open ports. Useful for installation, verification, and troubleshooting. DNS Lookup Check common DNS records for a domain, including A, AAAA, CNAME, MX, TXT, and NS. MX Lookup Look up mail server records for a domain. Domain Whois Lookup View registration details for a domain name. IP Whois Lookup Identify the organization behind a public IP address. CCTV Storage Calculator Estimate storage requirements for camera systems based on channels, bitrate, resolution, and recording schedule. Useful for real deployments FastDDNS is designed for: โ€ข CCTV installers working with Dahua, Hikvision, NVR, DVR, and IP camera setups โ€ข IT technicians managing routers, firewalls, servers, and Windows clients โ€ข MikroTik, pfSense, and DrayTek users who need practical DDNS support โ€ข Home lab and self-hosting users who want simple hostname management and diagnostics โ€ข Anyone who needs free DDNS plus useful network tools on mobile Plan options FastDDNS offers multiple ways to get started: โ€ข Free 1 Hostname โ€” one hostname valid for one year at no cost โ€ข Free with Limited Use โ€” create additional hostnames, each active for 30 days (reactivate to continue using) โ€ข Premium Packs โ€” more hostnames and longer validity for users managing multiple devices The DDNS update protocol is DynDNS-compatible, so it also works with third-party clients and scripts. FastDDNS focuses on practical DDNS management, remote access support, and network diagnostics in a simple mobile experience. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://fastddns.net/privacy

Screenshots

VNSenergy4 screens
FastDDNS1 screens

Verdict

The call

The clearest difference is in-app purchases: VNSenergy at none against FastDDNS's 3. VNSenergy also leads on ads (none vs shown) and iOS requirement (8.0 vs 15.0). FastDDNS's advantage is update cadence (fortnightly vs every 5 months). On price and device support there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. FastDDNS sells 3 in-app purchases, starting at $19.99 per year. VNSenergy asks for nothing beyond the download.

UpkeepUpdate frequency

VNSenergy ships an update every 5 months, FastDDNS fortnightly. The most recent releases landed on September 11, 2026 and September 10, 2026 respectively.

Scorecard4 real differences ยท 2 level
VNSenergy versus FastDDNS: the parameters behind the verdict, then further details
ParameterVNSenergyFastDDNS
PriceFreeFree
Update frequencyEvery 5 monthsFortnightly โ€” better
AdsNo โ€” betterYes
In-app purchasesNo โ€” betterYes
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS8.0 โ€” better15.0
Further details โ€” not scored
Size59 MB45 MB
Age rating17+4+
DeveloperAsianPowerDevicesIncMinh Nguyen

In-app purchases

None

VNSenergy

No in-app purchases

3 purchases

FastDDNS

Subscriptions3
  • Premium Basic Yearly$19.991 Year
  • Premium Pro Yearly$34.991 Year
  • Premium Business Yearly$69.991 Year

Questions

Is VNSenergy free?
VNSenergy is free to download, with no in-app purchases.
Is FastDDNS free?
FastDDNS is free to download, with in-app purchases available.
Do VNSenergy or FastDDNS have ads?
FastDDNS shows ads; VNSenergy does not.
Which is updated more often, VNSenergy or FastDDNS?
VNSenergy ships an update every 5 months, and FastDDNS fortnightly. Most recently, VNSenergy was updated on September 11, 2026 and FastDDNS on September 10, 2026.

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