Comparison

Web Inspector vs Hairspring

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

Head to head
About

Web Inspector

Inspect and share HTML, CSS, and JavaScript source code from mobile web pages directly on your device. Debug web applications by viewing source code as a real mobile browser would.

Highlights
  • Inspect HTML tags
  • View CSS code
  • Extract JavaScript
  • Share source code
  • Debug mobile web apps
  • Simulate mobile browser
Features
Read full description

Web Inspector allow you to retrieve (and share) html tags, css and javascript code (isource) from web page particularly mobile page (iPad and iPhone) directly from your mobile Debug your webapp to inspect the source as a real mobile device browser

About

Hairspring

This app analyzes mechanical watches, measuring rate, beat error, and amplitude. It provides detailed reports, compares measurements, and offers guidance for accurate readings. The app is designed for privacy and includes all features with a single purchase.

Highlights
  • Measures rate, beat error, and amplitude
  • Compares multiple measurements for accuracy
  • Generates PDF measurement reports
  • Automatic detection of common beat rates
  • Live timing graph and six-position measurements
  • Privacy-focused with on-device analysis
  • Visual setup guide and signal-path coaching
Features
Read full description

Hairspring is a serious iPhone timegrapher for mechanical watches. It measures rate, beat error, and amplitude — and tells you when the signal cannot support a trustworthy answer. MEASURE TWICE, SEE IF THEY AGREE A single number is not proof. Measure the same watch again and Hairspring compares the two runs, includes the statistical uncertainty of each rate, and states whether the readings agree. Save the verification in History and its PDF report. WHAT IT REPORTS • Rate in seconds per day, with statistical fit uncertainty • Automatic detection of common beat rates from 14,400 to 36,000 bph • Beat error from the escapement's high-frequency signature • Live amplitude as a range, reflecting what an acoustic measurement supports • Live timing graph and six-position measurements • Local history, drift and session comparisons • PDF measurement receipts for sharing with a watchmaker BUILT TO WITHHOLD BAD DATA Too much scatter, an implausible result, or timing too disturbed to number the beats produces a clear explanation and a suggested fix — not a plausible-looking number. The analysis band was chosen by a pre-registered experiment whose acceptance criteria were written before the data was collected; the first failed attempt remains documented. ONE PURCHASE, NO SUBSCRIPTION Everything is included with your purchase: every measurement, position run, history entry, comparison, PDF report, and optional raw capture. No subscription, no in-app purchase, no account, no sign-in, no ads, and no analytics. PRIVATE BY DESIGN Live audio is analyzed on your iPhone and is never uploaded automatically. Raw capture is off by default; if you enable it for diagnostics, the file stays on your device unless you explicitly export it. SETUP MATTERS Place the watch beside the phone — never on it — on a hard surface near the bottom microphone. Hairspring includes a visual setup guide and live signal-path coaching so you can see what needs attention. Requires a mechanical, not quartz, watch. Rate is what a phone microphone measures best; amplitude and beat error are reported with their limits stated.

Screenshots

Web Inspector3 screens
Hairspring4 screens

Verdict

The call

The clearest difference is price: Web Inspector at Free against Hairspring's $9.99. Web Inspector also leads on ratings volume (30 vs 2) and device support (3 vs 1). Hairspring's advantage is rating (5.0 vs 2.9) and ads (none vs shown). On 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

Web Inspector is free to download; Hairspring costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Hairspring holds the better App Store score, 5.0 against 2.9. That said, the two scores are not equally well evidenced: Web Inspector has 30 ratings behind it against 2, so its average is the more settled of the two.

UpkeepUpdate frequency

Web Inspector ships an update every 22 months, Hairspring every 5 days. The most recent releases landed on October 13, 2026 and October 7, 2026 respectively.

Scorecard8 real differences · 2 level
Web Inspector versus Hairspring: the parameters behind the verdict, then further details
ParameterWeb InspectorHairspring
PriceFree — better$9.99
Rating2.9 (30 ratings)5.0 (2 ratings) — better
Positive reviews56.3% of reviews—
Number of ratings30 — better2
Update frequencyEvery 22 monthsEvery 5 days — better
AdsYesNo — better
In-app purchasesNoNo
MonetizationAd-supported — betterPaid
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.0 — better18.0
Further details — not scored
Size18 MB2 MB
Age rating17+4+
DeveloperJB STEVENARDMarat Oganesyan

Customer experience

Web Inspector

All ratings30 ratings
Positive46.7%
Neutral6.7%
Negative46.7%
Written reviews16 reviews
Positive56.3%
Neutral0.0%
Negative43.8%

Hairspring

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Web Inspector

No in-app purchases

None

Hairspring

No in-app purchases

Questions

Is Web Inspector free?
Web Inspector is free to download, with no in-app purchases.
Is Hairspring free?
Hairspring costs $9.99, with no in-app purchases.
Which has better reviews, Web Inspector or Hairspring?
Hairspring is rated higher. Web Inspector averages 2.9 out of 5 from 30 ratings, while Hairspring averages 5.0 from 2 ratings.
Do Web Inspector or Hairspring have ads?
Web Inspector shows ads; Hairspring does not.
Which is updated more often, Web Inspector or Hairspring?
Web Inspector ships an update every 22 months, and Hairspring every 5 days. Most recently, Web Inspector was updated on October 13, 2026 and Hairspring on October 7, 2026.

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