Comparison

DNS Optimizer vs NSM ISP Billing

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

Head to head
About

DNS Optimizer

Optimize your internet connection by easily switching DNS servers. Benchmark performance, block unwanted content, and enhance online gaming with secure and private browsing. Supports Wi-Fi and cellular networks on iPhone, iPad, and Mac.

Highlights
  • Switch system-wide DNS configurations
  • Benchmark DNS server performance
  • Pre-configured trusted DNS servers
  • Add custom encrypted DNS servers (DoH/DoT)
  • Block ads and unwanted content
  • Improve online gaming latency
Features
Read full description

Experience faster, safer, and more private internet browsing with DNS Optimizer—the ultimate DNS changer and benchmark app for your iPhone, iPad, and Mac. With this app, you can effortlessly switch between DNS servers, benchmark their performance, and customize your DNS settings to optimize your internet connection. Change DNS Server Enhance your browsing experience by easily changing system-wide DNS configurations. DNS Optimizer seamlessly integrates with your iPhone (iOS), iPad (iPadOS), and Mac (macOS), allowing you to configure DNS for both Wi‑Fi and cellular networks using your device’s built-in network settings—no VPN required. Pre-configured DNS Servers Quickly connect to fast, secure, and reliable pre-configured servers. Choose from trusted providers such as Cloudflare DNS (1.1.1.1), Google Public DNS (8.8.8.8), Quad9 (9.9.9.9), Cisco OpenDNS, AdGuard, CleanBrowsing, Control D, and dns0.eu. Add Custom DNS Servers Go beyond the defaults by setting up your own advanced, encrypted configurations. Enjoy integrated support for DNS over HTTPS (DoH), DNS over TLS (DoT), IPv4, and IPv6—giving you complete control over your DNS settings. (Available in the Pro version) Run DNS Benchmark Find the fastest DNS server for your network and location with advanced latency tests. You can easily measure and compare performance across multiple servers, including those that support encrypted protocols like DNS-over-HTTPS and DNS-over-TLS. Block Unwanted Content Take control of your browsing experience by choosing DNS servers designed for ad blocking, malicious content filtering, or parental controls (adult content filtering). Easily block unwanted content, protect your family, and keep your online activities secure and private. Improve Your Online Gaming Experience When every millisecond counts, your DNS configuration can be a game-changer. If your default or ISP-provided DNS server isn’t up to the task, you could experience lag, high ping, and other latency issues. Use this app to connect to the best DNS server for your connection and enjoy a smoother, more responsive gaming experience. Privacy: https://dnsoptimizer.app/privacy/ Terms: https://dnsoptimizer.app/terms/

About

NSM ISP Billing

Features
Read full description

Experience seamless internet management with the NSM ISP Billing app! Designed exclusively for our customers in Cambodia, this app puts the power of your internet connection right in your pocket. Whether you need to pay a bill, check your bandwidth, or upgrade your plan, you can do it all quickly and securely. Key Features: • Manage Your Connections: View your active internet plans, check your connection status, and monitor your bandwidth speeds (up to 200 Mbps). • Plan Upgrades & Renewals: Easily request a plan change or renew your current package directly from your phone. • Real-Time Notifications: Get instant alerts for upcoming payments, maintenance schedules, and exclusive promotions. • Customer Support: Contact our fast, reliable, and local support team whenever you need assistance. • Customer Management: View detailed customer profiles, connection statuses, and service history. • Service Actions: Administrators can remotely lock, terminate, or reactivate customer connections as needed. Stay connected with NSM ISP — proudly serving Cambodia with 100% Fiber Optic speed, reliable service, and dedicated local support.

Screenshots

DNS Optimizer4 screens
NSM ISP Billing4 screens

Verdict

The call

The clearest difference is in-app purchases: NSM ISP Billing at none against DNS Optimizer's 2. NSM ISP Billing also leads on iOS requirement (15.0 vs 17.0). 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. DNS Optimizer sells 2 one-off in-app purchases. NSM ISP Billing asks for nothing beyond the download.

UpkeepUpdate frequency

DNS Optimizer ships an update every 11 days, NSM ISP Billing every 3 weeks. The most recent releases landed on October 15, 2026 and October 19, 2026 respectively.

Scorecard2 real differences · 8 level
DNS Optimizer versus NSM ISP Billing: the parameters behind the verdict, then further details
ParameterDNS OptimizerNSM ISP Billing
PriceFreeFree
Rating5.0 (7 ratings) — better—
Positive reviews25.0% of reviews—
Number of ratings7 — better—
Update frequencyEvery 11 days — betterEvery 3 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, Mac — betteriPhone, iPod
Requires iOS17.015.0 — better
Further details — not scored
Size9 MB39 MB
Age rating4+4+
DeveloperATAKAN YILDIRIMNSM TECHNOLOGY CO., LTD.

In-app purchases

2 purchases

DNS Optimizer

One-time2
  • DNS Optimizer Pro$9.99
  • DNS Optimizer Pro$19.99
None

NSM ISP Billing

No in-app purchases

Questions

Is DNS Optimizer free?
DNS Optimizer is free to download, with in-app purchases available.
Is NSM ISP Billing free?
NSM ISP Billing is free to download, with no in-app purchases.
Do DNS Optimizer or NSM ISP Billing have ads?
Neither DNS Optimizer nor NSM ISP Billing shows ads.
Which is updated more often, DNS Optimizer or NSM ISP Billing?
DNS Optimizer ships an update every 11 days, and NSM ISP Billing every 3 weeks. Most recently, DNS Optimizer was updated on October 15, 2026 and NSM ISP Billing on October 19, 2026.

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