Comparison

Protractor Edge vs LogLens

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

Head to head
About

Protractor Edge

Measure angles directly on your device without taking photos or placing the angle on screen. This app offers a unique and efficient way to determine degrees, saving you time with its handy assistant functionality.

Highlights
  • Direct angle measurement on device
  • Intuitive line dragging interface
  • Measures angles in photos (Premium)
  • Measures from camera view (Premium)
  • Ad-free experience (Premium)
Features
Read full description

A simple protractor. Just put your device on the angle you want to measure. Then drag the two lines to align the both sides of the angle. The degrees will be there. It is different from other protractor apps. This is a new way to measure angles. It requires neither taking photo nor putting the angle above the screen. Now start using this handy assistant to measure angles which will save you a lot of time. ------------------------------------- PREMIUM ACCESS SUBSCRIPTION - Measure the world from camera - Measure angles in photos - No Ads - The subscription is $0.99 yearly with trial - Payment will be charged to iTunes Account at confirmation of purchase - Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period - Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal - Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase - Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that service, where applicable - Terms of use: https://service.notationpad.com/terms_service.html

About

LogLens

Read full description

LogLens is an offline-first flight log analysis app for drone operators and UAS engineers. Import PX4 ULog (.ulg) flight logs directly from the Files app, and get instant diagnostic analysis — no cloud, no accounts, no network required. What LogLens does: • Parses real PX4 ULog binary files on-device • Runs deterministic diagnostic rules for battery health, GPS quality, vibration, estimator status, and failsafe events • Displays a curated quicklook: health verdict, severity-coded findings with recommendations, event timeline, and charts (voltage, altitude, GPS satellites, flight modes) • Generates polished HTML and PDF flight reports you can share with your team • Stores everything locally — your logs never leave your device unless you explicitly export them Built for: • Drone operators and field test teams • Robotics and UAS engineers • Developers working with PX4 and open-source autopilot stacks • Anyone who wants fast situational awareness from a flight log Current format support: • PX4 ULog (.ulg) — fully supported • ArduPilot DataFlash (.bin) — sample data preview (full parser coming) • MAVLink Telemetry (.tlog) — sample data preview (full parser coming) Privacy is a feature: all processing happens on-device. No backend, no accounts, no tracking.

Screenshots

Protractor Edge2 screens
LogLens4 screens

Verdict

The call

The clearest difference is in-app purchases: LogLens at none against Protractor Edge's 2. LogLens also leads on ads (none vs shown). Protractor Edge's advantage is iOS requirement (9.0 vs 26.2). On price 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. Protractor Edge sells 2 in-app purchases, starting at $1.99 per year. LogLens asks for nothing beyond the download.

Scorecard3 real differences · 7 level
Protractor Edge versus LogLens: the parameters behind the verdict, then further details
ParameterProtractor EdgeLogLens
PriceFreeFree
Rating4.2 (94 ratings) — better—
Positive reviews69.6% of reviews—
Number of ratings94 — better—
Update frequencyEvery 43 months—
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS9.0 — better26.2
Further details — not scored
Size21 MB16 MB
Age rating4+4+
Developer嵩 张ALEX MICHAEL FRALEY

In-app purchases

2 purchases

Protractor Edge

Subscriptions1
  • Premium Access7 Days trial$1.991 Year
One-time1
  • Remove Ads$0.99
None

LogLens

No in-app purchases

Questions

Is Protractor Edge free?
Protractor Edge is free to download, with in-app purchases available.
Is LogLens free?
LogLens is free to download, with no in-app purchases.
Do Protractor Edge or LogLens have ads?
Protractor Edge shows ads; LogLens does not.

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