Comparison

Protractor Smart vs ONESHOT Ballistics

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

Head to head
About

Protractor Smart

This app acts as a smart instrument for measuring angles using your device's camera. It offers two free modes for measuring angles on screen or using a plumb bob for slopes, with an additional premium mode for polygon measurements.

Highlights
  • Camera-based angle measurement
  • Touch measure mode
  • Plumb bob measure for slopes
  • Polygon measurement (premium)
  • Screenshot functionality
Features
Read full description

Protractor - smart instrument to measure angles. Turn on the camera mode and measure the angle of buildings, mountains, or any other object around you. This app includes two free measuring modes: - Touch measure - touch the screen to set the angle (use camera view!). - Plumb bob measure - pendulum - use to determine the slope (remember to calibrate the plumb). In each mode, you can switch to camera view and take measurements of all objects around you. Additional Premium mode: Polygon measurement lets you draw any shape on your screen to check all its angles. Turn on the camera to see the real object through your phone and copy its shape. You can also pick a photo from your gallery or take a new picture to draw a shape on the image. In Premium mode, you can change colors, add helper lines, and switch between different angle units. All modes allows you to make a screenshot of anything on the screen. Enjoy !!!

About

ONESHOT Ballistics

Features
Read full description

OneShot Ballistics: Your Hands-Free Digital Spotter OneShot Ballistics brings modern iOS technology to the range and the field. Designed for precision shooters, hunters, and PRS competitors who need accurate, real-time shot solutions without disturbing their shooting position. The "Invisible Spotter Loop" (Siri & Live Activities) Stop handling your phone in the dust or breaking your position behind the rifle. Live Activities & Dynamic Island: See your latest Elevation (MOA/MIL) and Windage directly on your Lock Screen and Dynamic Island. Keep your phone locked to save battery while your data remains visible. Siri App Intents Integration: Simply ask Siri for a new calculation (e.g., "Hey Siri, new target at 500 meters"). OneShot calculates the new shot solution in the background, updates the screen, and reads the adjustments aloud over your Bluetooth hearing protection for you. Precision Ballistics Engine Real-Time Calculations: Accurate computed solutions for Elevation, Windage, Spin Drift, and Aerodynamic Jump. Profile Management: Save and easily switch between different rifles, ammunition, and rifle setups. Strict Validation: Siri and the system use precise profile matching to ensure you never use incorrect data at the range. Automatic Environmental Data (WeatherKit) Smart Weather Detection: If you do not manually enter wind speed or barometric pressure, OneShot automatically fetches the most recent weather and location data via Apple WeatherKit. Smart Offline Cache: No reception in the field? The application automatically uses your most recent known environmental data and explicitly notifies you. Designed for the Field High-Contrast Interface: Extreme readability in full sunlight or dark night conditions. Offline-First Architecture: Works 100% without an active cellular network. Your data and profiles remain stored locally on your device. No Complicated Subscriptions: Get full access to professional ballistics calculating power on your iPhone.

Screenshots

Protractor Smart4 screens
ONESHOT Ballistics4 screens

Verdict

The call

The clearest difference is price: Protractor Smart at Free against ONESHOT Ballistics's $9.99. ONESHOT Ballistics's advantage is in-app purchases (none vs 1) and update cadence (every 8 days vs every 21 months). On ads, device support and iOS requirement 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

Protractor Smart is free to download; ONESHOT Ballistics costs $9.99 up front. Protractor Smart sells 1 one-off in-app purchase. ONESHOT Ballistics asks for nothing beyond the download.

UpkeepUpdate frequency

Protractor Smart ships an update every 21 months, ONESHOT Ballistics every 8 days. The most recent releases landed on October 24, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 7 level
Protractor Smart versus ONESHOT Ballistics: the parameters behind the verdict, then further details
ParameterProtractor SmartONESHOT Ballistics
PriceFree — better$9.99
Rating4.6 (246 ratings) — better—
Positive reviews43.6% of reviews—
Number of ratings246 — better—
Update frequencyEvery 21 monthsEvery 8 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPod, Apple Watch
Requires iOS14.0 — better15.0
Further details — not scored
Size11 MB61 MB
Age rating4+17+
DeveloperExaMobile S.A.GJ Pretorius

Bugs and requests

Protractor Smart

Reported bugs

8 issues
  • App loads indefinitely
  • App does not launch after iOS updates
  • Stuck on loading screen
  • Photo upload not possible in premium version
  • Upside-down protractor on iOS
Show 3 more
  • Phone locks during use
  • Camera mode is terrible and inaccurate
  • Poor calibration

Requested features

6 requests
  • Improve camera function (light, zoom)
  • Add automatic hold function
  • Increase digital readout size
  • Add more skins/cosmetics
  • Option to remove ads
Show 1 more
  • Fix upside-down protractor on iOS

ONESHOT Ballistics

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

Protractor Smart

One-time1
  • AdBlock - Remove ads$1.99
None

ONESHOT Ballistics

No in-app purchases

Questions

Is Protractor Smart free?
Protractor Smart is free to download, with in-app purchases available.
Is ONESHOT Ballistics free?
ONESHOT Ballistics costs $9.99, with no in-app purchases.
Do Protractor Smart or ONESHOT Ballistics have ads?
Neither Protractor Smart nor ONESHOT Ballistics shows ads.
Which is updated more often, Protractor Smart or ONESHOT Ballistics?
Protractor Smart ships an update every 21 months, and ONESHOT Ballistics every 8 days. Most recently, Protractor Smart was updated on October 24, 2026 and ONESHOT Ballistics on October 31, 2026.

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