Comparison

BLACKSLATE7 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

BLACKSLATE7

This app transforms your smartphone into a programmable clapperboard for film and TV production. Easily load custom images or pre-set templates onto a compatible physical slate using NFC technology. Adjust image contrast and create grayscale effects for optimal visual output.

Highlights
  • Program images onto physical slate via NFC
  • Load pre-set SLATE templates
  • Create custom clapperboard images
  • Crop, scale, and rotate images
  • Adjust black/white threshold for contrast
  • Unique dithering control for grayscale simulation
Features
Read full description

TRIBE7’s SLATE is a uniquely re-usable and digitally reconfigurable compact clapperboard, designed for Film and TV production. The BLACKSLATE7 iOS app allows your smartphone to quickly program images onto your SLATE using the NFC interface in your iOS device. Choose from one of the pre-loaded SLATE templates or create and name your own custom clapperboard image through the crop, scale, and processing features in the app. Custom image processing features include: • Crop, Scale, and Rotate • Black/White Threshold Level control to optimize contrast and quality • Unique Dithering control to process images with a grayscale simulation

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

BLACKSLATE74 screens
Stop Calculator1 screens

Verdict

The call

The clearest difference is review sentiment: Stop Calculator at 100% against BLACKSLATE7's 20%. Stop Calculator also leads on rating (5.0 vs 2.7) and update cadence (every 2 days vs every 3 months). BLACKSLATE7's advantage is price (Free vs $0.99). 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

BLACKSLATE7 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 2.7. Both are backed by a comparable volume of ratings — 6 and 4 respectively. Written reviews point the same way: 20% of BLACKSLATE7's written reviews are positive against 100% of Stop Calculator's.

UpkeepUpdate frequency

BLACKSLATE7 ships an update every 3 months, Stop Calculator every 2 days. The most recent releases landed on June 11, 2026 and August 8, 2026 respectively.

Scorecard6 real differences · 5 level
BLACKSLATE7 versus Stop Calculator: the parameters behind the verdict, then further details
ParameterBLACKSLATE7Stop Calculator
PriceFree — better$0.99
Rating2.7 (6 ratings)5.0 (4 ratings) — better
Positive reviews20.0% of reviews100.0% of reviews — better
Number of ratings6 — better4
Update frequencyEvery 3 monthsEvery 2 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterPaid
Best chart rank—#155 — better
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS14.0 — better15.6
Further details — not scored
Size19 MB1 MB
Age rating4+4+
DeveloperLummico Sp. z o.o.eric Hernandez

Customer experience

BLACKSLATE7

All ratings2 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews5 reviews
Positive20.0%
Neutral0.0%
Negative80.0%

Stop Calculator

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

In-app purchases

None

BLACKSLATE7

No in-app purchases

None

Stop Calculator

No in-app purchases

Questions

Is BLACKSLATE7 free?
BLACKSLATE7 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, BLACKSLATE7 or Stop Calculator?
Stop Calculator is rated higher. BLACKSLATE7 averages 2.7 out of 5 from 6 ratings, while Stop Calculator averages 5.0 from 4 ratings.
Do BLACKSLATE7 or Stop Calculator have ads?
Neither BLACKSLATE7 nor Stop Calculator shows ads.
Which is updated more often, BLACKSLATE7 or Stop Calculator?
BLACKSLATE7 ships an update every 3 months, and Stop Calculator every 2 days. Most recently, BLACKSLATE7 was updated on June 11, 2026 and Stop Calculator on August 8, 2026.

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