Comparison

DNS测速 vs Diff Checker

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

Head to head
About

DNS测速

Optimize your network speed by testing and selecting the best DNS servers. This tool measures DNS latency and resolution times to help you reduce connection delays and improve your overall online experience.

Highlights
  • DNS latency testing
  • DNS resolution delay testing
  • TCP connectivity testing
  • Network optimization
  • DNS server selection
Features
Read full description

曾经选取DNS就是能用就行?你知道吗,不同的DNS不仅会影响你首次连接服务器、首次打开网页的速度,而且还影响着不同的服务器。错误的DNS会将你连接到较远的服务器,让你的延迟更高。 是时候用DNS测速工具来优化你的网络了!在路由器的DHCP中选择合适的DNS,或者在计算机的网络设置中更改为正确的DNS,即可轻松享受网络延迟的降低,优化自己的网络环境。 功能: DNS延迟测试 DNS解析结果的延迟测试 TCP连通性测试

About

Diff Checker

Features
Read full description

Compare two versions of any text and see exactly what changed — line by line and word by word, highlighted the instant you paste. Most "spot the difference" attempts end in squinting at two walls of text side by side. DiffCheck does the reading for you: paste an old version and a new one, and every addition turns green, every deletion turns red, so the change jumps out in a second. It works on code, config files, contracts, and plain prose alike — and it never sends a single character off your device. WHAT YOU GET - See every change at a glance — additions in green, deletions in red, nothing missed - Switch between line-level and word-level diffs to catch even a single edited character - Read changes in a clean side-by-side split view that lines the two versions up - Copy a ready-to-use unified patch of any comparison straight to your clipboard - Keep a local history of past comparisons so you can revisit what changed and when - Save reusable snippets and sample diffs to compare the same text again fast PERFECT FOR - Developers reviewing code, pull requests, and config changes on the go - Writers and editors checking edits between two drafts - Legal and business users comparing contract or document revisions - Students learning how diffs and the unified patch format work WHY NOT JUST EYEBALL IT Reading two versions by hand is where mistakes hide — a flipped number, a deleted clause, a changed flag. DiffCheck compares them character by character so you catch the change you would have scrolled right past. PRIVACY Your text never leaves your device. There are no accounts, no servers, and no tracking — every comparison happens fully offline. FULL ACCESS DiffCheck is free to compare text. Full Access unlocks word-level diffs, the side-by-side split view, saved comparison history, and unified patch export. Choose the plan that fits: - Weekly plan - Yearly plan - Lifetime one-time purchase Payment is charged to your Apple ID at confirmation of purchase. Subscriptions auto-renew unless turned off at least 24 hours before the end of the current period; manage or cancel anytime in your App Store settings. The lifetime option is a one-time purchase. Paste two versions now and see what changed in a second. Terms of Use (EULA): https://web-levi.web.app/terms Privacy Policy: https://web-levi.web.app/privacy-policy Questions? https://web-levi.web.app/#contact

Screenshots

DNS测速3 screens
Diff Checker4 screens

Verdict

The call

The clearest difference is update cadence: Diff Checker at every 2 months against DNS测速's every 5 months. DNS测速's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 17.0). On price, ads and in-app purchases 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测速 sells 1 one-off in-app purchase and Diff Checker sells 2 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

DNS测速 ships an update every 5 months, Diff Checker every 2 months. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 5 level
DNS测速 versus Diff Checker: the parameters behind the verdict, then further details
ParameterDNS测速Diff Checker
PriceFreeFree
Positive reviews40.0% of reviews—
Update frequencyEvery 5 monthsEvery 2 months — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.0 — better17.0
Further details — not scored
Size7 MB5 MB
Age rating4+4+
Developer兴龙 张Phuc Pham

In-app purchases

1 purchases

DNS测速

One-time1
  • 测速会员$0.99
2 purchases

Diff Checker

Subscriptions2
  • Weekly$2.997 Days
  • Yearly$14.991 Year

Questions

Is DNS测速 free?
DNS测速 is free to download, with in-app purchases available.
Is Diff Checker free?
Diff Checker is free to download, with in-app purchases available.
Do DNS测速 or Diff Checker have ads?
Neither DNS测速 nor Diff Checker shows ads.
Which is updated more often, DNS测速 or Diff Checker?
DNS测速 ships an update every 5 months, and Diff Checker every 2 months. Most recently, DNS测速 was updated on October 30, 2026 and Diff Checker on October 31, 2026.

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