Comparison

Protractor vs Detention Gun

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

Head to head
About

Protractor

Measure angles precisely using your phone's screen, gyroscope, or camera. Offers smart presets, real-time feedback with high accuracy, and calibration features to adapt to various situations.

Highlights
  • 3-in-1 measurement modes
  • Smart angle presets with alerts
  • Hyper-responsive feedback (≤0.5° accuracy)
  • Auto dynamic compensation calibration
  • Anti-shake technology for motion scenes
  • Screen lock for measurements
Features
Read full description

Ditch bulky tools! Measure angles precisely anywhere with just your phone. *** Features *** ► Full-Scene Precision Measurement * 3-in-1 Modes: Screen Protractor / Gyroscope Protractor/ Camera Protractor, adapt to different scenarios. * Smart Angle Preset: Input target angles for instant deviation alerts. * Hyper-Responsive Feedback: Real-time tracking with ≤0.5° accuracy. ► Triple-Calibration Assurance * Auto Dynamic Compensation: Device-position-aware baseline calibration * Anti-Shake Tech: 80% accuracy boost in motion scenes (Gyroscope Mode) * Screen lock: Freeze measurements instantly to prevent accidental touches. ► Contact Us * Email: ceo@noadit.com

About

Detention Gun

Features
Read full description

STOP LETTING BROKERS STEAL YOUR TIME. If the wheels aren't turning, you aren't earning. In the logistics industry, time is money, and brokers love to waste yours. DetentionGun is the financial defense weapon for the independent Owner-Operator. We don't just track your wait time; we force brokers to pay for it. ** NEW USER BONUS: Download now and get 3 FREE CREDITS to start. ** THE PROBLEM: You wait 5 hours at a shipper. You call the broker. They deny it. They claim "you didn't check in" or "you weren't there that long." You are too exhausted to fight, so you leave money on the table. THE SOLUTION: DetentionGun is a "Fire and Forget" tool. It requires NO broker signup, NO permission, and NO account setup on their end. It acts as your automated billing agent, generating legally robust, GPS-verified invoices and emailing them instantly upon departure. HOW IT WORKS: 1. Arrive & Tap: Hit the Big Yellow Button. We lock your GPS coordinates and prompt for a photo of the dock/sign-in sheet. 2. Wait: Go to sleep. Watch a movie. We track the time and automatically deduct your custom free period (default 2 hours). 3. Depart & Bill: Hit "Depart." The app generates a professional PDF invoice and emails it to the broker (and your factoring company) instantly. KEY FEATURES: • INDISPUTABLE EVIDENCE Every invoice includes high-accuracy GPS timestamps and guard shack photos. It is harder to deny than a handwritten log. • THE "LEGAL HAMMER" Choose your invoice tone based on the broker relationship: - Relationship Mode: Professional and polite. - Enforcer Mode: Cites federal statutes and warns regarding surety bond filings. • OFFLINE "STEEL WAREHOUSE" MODE No signal inside the facility? No problem. The app queues your data locally and auto-sends the invoice the second you regain cell service. • LUMPER RECEIPT CAPTURE Snap a photo of your lumper receipt. We digitize the amount and attach it to the final invoice automatically. • FACTORING INTEGRATION Auto-CC your factoring company (RTS, TBS, etc.) to ensure accessorial charges are processed in your next settlement. PRICING MODEL DetentionGun is free to download. Every new account receives 3 FREE credits to try the system risk-free. After your free credits, choose the plan that fits your volume: • Pay As You Go: $3.99 per invoice (Single Credit). • Bulk Saver: Purchase a 5-Credit Pack for a discount. • Pro Hauler Subscription: $12.99 per month for unlimited invoicing. SUBSCRIPTION INFORMATION If you choose the "Pro Hauler" subscription: • Title: DetentionGun Pro (Unlimited Invoicing) • Length of Subscription: 1 Month • Price of Subscription: $12.99 / Month Payment will be charged to your 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. You can manage your subscriptions and turn off auto-renewal by going to your Account Settings after purchase. Any unused portion of a free trial period, if offered, will be forfeited when you purchase a subscription. Privacy Policy: https://detentiongun.com/privacy.html Terms of Use (EULA): https://detentiongun.com/terms.html

Screenshots

Protractor4 screens
Detention Gun4 screens

Verdict

The call

The clearest difference is update cadence: Detention Gun at every 8 days against Protractor's every 5 weeks. On price, ads, in-app purchases 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 sells 2 one-off in-app purchases and Detention Gun sells 3 in-app purchases, starting at $12.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Protractor ships an update every 5 weeks, Detention Gun every 8 days. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

Scorecard1 real difference · 9 level
Protractor versus Detention Gun: the parameters behind the verdict, then further details
ParameterProtractorDetention Gun
PriceFreeFree
Rating1.8 (6 ratings) — better—
Positive reviews63.6% of reviews—
Number of ratings6 — better—
Update frequencyEvery 5 weeksEvery 8 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.0 — better18.6
Further details — not scored
Size7 MB41 MB
Age rating4+4+
DeveloperNoadit, Inc.Learnastra LLC

In-app purchases

2 purchases

Protractor

One-time2
  • Bubble Tea$0.99
  • Coffee$4.99
3 purchases

Detention Gun

Subscriptions1
  • Unlimited Pro$12.991 Month
One-time2
  • 1 Invoice Credit$3.99
  • 5 Invoice Credits$14.99

Questions

Is Protractor free?
Protractor is free to download, with in-app purchases available.
Is Detention Gun free?
Detention Gun is free to download, with in-app purchases available.
Do Protractor or Detention Gun have ads?
Neither Protractor nor Detention Gun shows ads.
Which is updated more often, Protractor or Detention Gun?
Protractor ships an update every 5 weeks, and Detention Gun every 8 days. Most recently, Protractor was updated on November 3, 2026 and Detention Gun on October 30, 2026.

Other comparisons