Comparison

DataCalc by DPBOX vs First Rush Viewer

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

Head to head
About

DataCalc by DPBOX

This tool helps filmmakers calculate video data capacity, transfer times, and recording durations. It offers offline use, iCloud synchronization, and language/unit switching.

Highlights
  • Offline data calculation
  • Transfer time estimation
  • Recording duration calculation
  • Summary of records
  • iCloud synchronization
  • Language and unit switching
Features
Read full description

Portable Data Calculator for Director of Photography, DIT, and professional filmmakers. # How can DataCalc help you? - Offline Use: Use anytime, anywhere, whether in the studio or wild, fast response. - Data Calculation: Calculate the video data capacity under different combination modes. - Transfer Time: Calculate the transmission time required for data at different rates. - Duration estimation: Calculate the video recording duration under a specified capacity. - Summary: Add multiple records to calculate the sum of capacity and transfer time. - Synchronization: Automatically synchronize summary records across multiple devices through iCloud; - Language and units: Support Chinese and English language switching, support conversion standard switching. # Contact us Email: fuxiaopang@gmail.com RedBook: @Gavin Foo # Subscription prices and terms DataCalc by DPBOX can be downloaded for free. If you choose to upgrade to the DataCalc Pro version, you can unlock all paid features. We offer one different purchase option: annual auto-renewal. If you are already a DPBOX Pro user, you can automatically activate DataCalc Pro after logging in with your Apple ID. For annual subscriptions: Once confirmed and paid, it will automatically renew through your Apple iTunes account. After successful payment, the subscription period will be extended. To cancel, please manually turn off the auto-renewal feature in iTunes/Apple ID settings management at least 24 hours before the end of the current subscription period. During the trial period, if you do not cancel the subscription, it will automatically activate and charge at the end of the trial period. This service is at your discretion to cancel; if you choose not to cancel, the renewal service for the next billing cycle will be activated for you. User Agreement: https://dpbox.notion.site/Terms-of-Use-0cd728d8d5074ac9953ce526ae76d705 Privacy Policy: https://dpbox.notion.site/Privacy-Policy-14dfaae1d9514a2eaf82a9f120c74be0

About

First Rush Viewer

Features
Read full description

First Rush Viewer is the free companion monitoring app for First Rush on macOS. Use it on set to view live camera streams from a Mac running First Rush on the same local Wi-Fi or production monitoring network. The Viewer is designed for directors, DPs, script supervisors, editors, and crew who need a lightweight monitor during multicam SDI recording. Features: - Discover First Rush on the local network with Bonjour. - Pair with a 6-digit code or QR code. - Monitor 1, 2, 3, or 4 camera streams. - iPhone and iPad layouts for single view and multicam viewing. - View-only operation: the iOS app does not record clips. - Stream health feedback for frame rate, jitter, decode latency, render latency, and dropped packets. - Screen recording detection and protection UI. Requirements: - First Rush for macOS running on the same local network. - Local Network permission enabled on iPhone or iPad. - Camera permission only if you want to scan the pairing QR code. First Rush Viewer is free. Recording, SDI capture, ProRes writing, and hardware control are handled by the Mac app.

Screenshots

DataCalc by DPBOX4 screens
First Rush Viewer1 screens

Verdict

The call

The clearest difference is in-app purchases: First Rush Viewer at none against DataCalc by DPBOX's 1. First Rush Viewer also leads on update cadence (every 9 days vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. DataCalc by DPBOX sells 1 in-app purchase, starting at $2.99 per year. First Rush Viewer asks for nothing beyond the download.

UpkeepUpdate frequency

DataCalc by DPBOX ships an update every 2 months, First Rush Viewer every 9 days. The most recent releases landed on September 14, 2026 and September 13, 2026 respectively.

Scorecard2 real differences ยท 6 level
DataCalc by DPBOX versus First Rush Viewer: the parameters behind the verdict, then further details
ParameterDataCalc by DPBOXFirst Rush Viewer
PriceFreeFree
Positive reviews100.0% of reviewsโ€”
Update frequencyEvery 2 monthsEvery 9 days โ€” better
AdsNoNo
In-app purchasesYesNo โ€” better
MonetizationFree with in-app purchasesโ€”
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.0 โ€” better17.0
Further details โ€” not scored
Size16 MB1 MB
Age rating4+4+
DeveloperGavin Fooแ„Œแ…ตแ†ซแ„€แ…ฒ แ„’แ…กแ†ซ

In-app purchases

1 purchases

DataCalc by DPBOX

Subscriptions1
  • Annual$2.991 Year
None

First Rush Viewer

No in-app purchases

Questions

Is DataCalc by DPBOX free?
DataCalc by DPBOX is free to download, with in-app purchases available.
Is First Rush Viewer free?
First Rush Viewer is free to download, with no in-app purchases.
Do DataCalc by DPBOX or First Rush Viewer have ads?
Neither DataCalc by DPBOX nor First Rush Viewer shows ads.
Which is updated more often, DataCalc by DPBOX or First Rush Viewer?
DataCalc by DPBOX ships an update every 2 months, and First Rush Viewer every 9 days. Most recently, DataCalc by DPBOX was updated on September 14, 2026 and First Rush Viewer on September 13, 2026.

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