Comparison

Letus Helix vs Stop Calculator

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

Head to head
About

Letus Helix

This app provides a streamlined interface for adjusting settings on various Letus Helix gimbal models. It simplifies configuration by removing less frequently used options found in desktop software, offering additional user assistance tools for easier operation.

Highlights
  • Intuitive settings adjustment
  • Simplified configuration
  • User assistance tools
  • Wi-Fi connectivity
  • Support for multiple Helix models
Read full description

The Letus Helix app is designed to be a simple and intuitive way of changing settings on the Letus Double Helix, Helix Pro, Standard Helix, and Helix Jr. Many settings from the SimpleBGC GUI (PC/Mac-based configuration program) have been eliminated, because those settings are only needed to work with other gimbals or are rarely used. Additional tools to help the user have been created to assist the user in their use of the Helix. Connection with the Helix is done as follows: 1) Turn the Helix on 2) Go to the Home screen on your iPhone/iPad. 3) Find Settings -> Wi-Fi and select your Letus Helix. 4) Enter the wifi password found in the app help files (found by pressing the info button on the app's main menu). 5) Once it connects in iOS, you can go to the app and press the connect button.

About

Stop Calculator

This tool helps filmmakers quickly compare exposure settings between two cameras. It calculates precise stop differences in real-time, ensuring your shots are perfectly exposed and matched across different setups. Simplify your workflow and eliminate guesswork.

Highlights
  • Compare ISO, t-stop, shutter angle, and FPS
  • Real-time stop difference calculation
  • Intuitive interface for filmmakers
  • Exposure feedback for underexposed/overexposed shots
Features
Read full description

Easily compare exposure settings between two cameras and get instant feedback on exposure differences. Whether you’re working with multiple cameras or trying to match your settings across different setups, Stop Calc simplifies the process by calculating precise stop differences in exposure. No more guessing—quickly find out if your settings are underexposed or overexposed and make informed decisions to get perfect shots every time. Key features: - Compare ISO, t-stop, shutter angle, and FPS between two cameras - Get accurate stop differences in real-time - Simple, intuitive interface designed for filmmakers Perfect for cinematographers, videographers, and anyone who needs precise exposure matching across different cameras.

Screenshots

Letus Helix4 screens
Stop Calculator1 screens

Verdict

The call

The clearest difference is price: Letus Helix at Free against Stop Calculator's $0.99. Letus Helix also leads on iOS requirement (11.0 vs 15.6). Stop Calculator's advantage is rating (5.0 vs 3.7) and update cadence (every 2 days vs every 4 months). On ratings volume, 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

Letus Helix is free to download; Stop Calculator costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Stop Calculator holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 3 and 4 respectively. Written reviews point the same way: 80% of Letus Helix's written reviews are positive against 100% of Stop Calculator's.

UpkeepUpdate frequency

Letus Helix ships an update every 4 months, Stop Calculator every 2 days. Both last shipped on October 24, 2026.

Scorecard6 real differences · 4 level
Letus Helix versus Stop Calculator: the parameters behind the verdict, then further details
ParameterLetus HelixStop Calculator
PriceFree — better$0.99
Rating3.7 (3 ratings)5.0 (4 ratings) — better
Positive reviews80.0% of reviews100.0% of reviews — better
Number of ratings34 — better
Update frequencyEvery 4 monthsEvery 2 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.0 — better15.6
Further details — not scored
Size21 MB1 MB
Age rating4+4+
DeveloperKen Lawlereric Hernandez

Customer experience

Letus Helix

All ratings3 ratings
Positive66.7%
Neutral0.0%
Negative33.3%
Written reviews5 reviews
Positive80.0%
Neutral0.0%
Negative20.0%

Stop Calculator

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Letus Helix

No in-app purchases

None

Stop Calculator

No in-app purchases

Questions

Is Letus Helix free?
Letus Helix is free to download, with no in-app purchases.
Is Stop Calculator free?
Stop Calculator costs $0.99, with no in-app purchases.
Which has better reviews, Letus Helix or Stop Calculator?
Stop Calculator is rated higher. Letus Helix averages 3.7 out of 5 from 3 ratings, while Stop Calculator averages 5.0 from 4 ratings.
Do Letus Helix or Stop Calculator have ads?
Neither Letus Helix nor Stop Calculator shows ads.
Which is updated more often, Letus Helix or Stop Calculator?
Letus Helix ships an update every 4 months, and Stop Calculator every 2 days. Most recently, Letus Helix was updated on October 24, 2026 and Stop Calculator on October 24, 2026.

Other comparisons