Comparison

PostCode vs Html Preview

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

Head to head
About

PostCode

This utility app helps video editors perform complex timecode calculations and frame rate conversions. It supports adding, subtracting, multiplying, and dividing timecode, calculating total run times, and instantly converting between various frame rates. Designed for professional post-production workflows.

Highlights
  • Timecode arithmetic (add, subtract, multiply, divide)
  • Total run time calculation from In/Out points
  • Instant frame rate conversion
  • Toggle between timecode and frame count
  • Support for all standard and custom frame rates
  • Export calculations as CSV or TXT
Features
Read full description

PostCode is the timecode calculator & frame rate converter for video editors and post-production teams. Made by an editor, for editors. Whether you're calculating durations, spotting VFX shots, converting frame rates for delivery, or totalling segments for a programme run time — PostCode handles the maths so you can handle the edit. • Calculator Add, subtract, multiply, and divide timecode. Your history is kept on the paper tape. Tap any line on the tape to drop its value back into the input. Touch and hold any line to copy or delete it. Supports negative values for pre-roll calculations. • Total Run Time Enter the In and Out points for multiple segments to calculate the total run time — like a simplified EDL. Reorder segments with drag-and-drop. Give segments an optional name. Set a target to see how far over or under you are. • Frame Rate Converter Convert timecode between any two frame rates instantly. Supports Drop Frame and Non-drop Frame, plus NTSC pull down. • TC/FR Toggle between timecode or frame count, anywhere in the app — perfect for VFX and animation workflows. • Frame Rates Supports all SMPTE standard frame rates — 23.976, 24, 25, 29.97 Non-drop Frame, 29.97 Drop Frame, 30, 50, 59.94 Non-drop Frame, 59.94 Drop Frame, 60 — as well as custom frame rates. • Undo Each mode keeps its own undo history. Shake your iPhone or press ⌘-Z to undo any destructive action. • Copy and Paste Touch and hold any value to copy and paste it as timecode or as frames. PostCode automatically validates and formats the timecode for you. • Built for Pros Hardware keyboard support on iPad and Mac. Dark mode optimised for edit suites and control rooms. Export calculations as TXT or CSV. If PostCode has helped you, an App Store rating and review would be appreciated. Happy editing!

About

Html Preview

Quickly view any HTML file on your iPhone or iPad. Share files from any app or browse your device to instantly render web pages, AI reports, or email attachments. Enjoy a private, ad-free experience with a history of your viewed files.

Highlights
  • Share Extension for instant previews
  • Zero-delay instant rendering
  • History with source app tracking
  • Support for multiple encodings
  • Dark Mode support
  • File picker for local browsing
  • Privacy-focused, no ads or analytics
Features
Currently charting
Read full description

Open any HTML file on your iPhone in seconds. Html Preview is the simplest way to view HTML files shared from any app. Whether it's a report from ChatGPT, a page saved from Safari, or an attachment from WeChat — just tap Share and preview it instantly. KEY FEATURES • Share Extension — Open HTML files directly from any app using the iOS Share Sheet • Instant Rendering — Pre-warmed WebView engine loads content with zero delay • History — Recent files with source app tracking (knows if it came from WeChat, ChatGPT, Mail, etc.) • Multiple Encodings — Supports UTF-8, Windows-1252, and ISO Latin-1 • Dark Mode — Beautiful warm UI that adapts to your system appearance • File Picker — Browse and open HTML files from the Files app • Privacy First — No ads, no analytics, no data collection. Everything stays on your device. PERFECT FOR • Viewing HTML reports generated by AI assistants (ChatGPT, Claude, Gemini) • Previewing web pages shared via messaging apps (WeChat, Telegram, WhatsApp) • Opening HTML email attachments • Checking HTML files from cloud storage (iCloud, Google Drive, Dropbox) • Developers previewing HTML mockups on mobile Html Preview supports .html, .htm, and .xhtml files.

Screenshots

PostCode4 screens
Html Preview3 screens

Verdict

The call

The clearest difference is rating: PostCode at 5.0 against Html Preview's 4.7. PostCode also leads on review sentiment (100% vs 88%). Html Preview's advantage is update cadence (every 6 days vs every 3 weeks) and ratings volume (11 vs 1). On price, ads, in-app purchases and monetization model 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

PostCode costs $2.99 and Html Preview $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

PostCode holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Html Preview has 11 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 100% of PostCode's written reviews are positive against 88% of Html Preview's.

UpkeepUpdate frequency

PostCode ships an update every 3 weeks, Html Preview every 6 days. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

Scorecard5 real differences · 6 level
PostCode versus Html Preview: the parameters behind the verdict, then further details
ParameterPostCodeHtml Preview
Price$2.99$2.99
Rating5.0 (1 ratings) — better4.7 (11 ratings)
Positive reviews100.0% of reviews — better87.5% of reviews
Number of ratings111 — better
Update frequencyEvery 3 weeksEvery 6 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
Best chart rank—#172 — better
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.017.0
Further details — not scored
Size6 MB1 MB
Age rating4+4+
DeveloperMartin McLeanCyberGame Limited

Customer experience

PostCode

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Html Preview

All ratings11 ratings
Positive90.9%
Neutral9.1%
Negative0.0%
Written reviews8 reviews
Positive87.5%
Neutral12.5%
Negative0.0%

In-app purchases

None

PostCode

No in-app purchases

None

Html Preview

No in-app purchases

Questions

Is PostCode free?
PostCode costs $2.99, with no in-app purchases.
Is Html Preview free?
Html Preview costs $2.99, with no in-app purchases.
Which has better reviews, PostCode or Html Preview?
PostCode is rated higher. PostCode averages 5.0 out of 5 from 1 ratings, while Html Preview averages 4.7 from 11 ratings.
Do PostCode or Html Preview have ads?
Neither PostCode nor Html Preview shows ads.
Which is updated more often, PostCode or Html Preview?
PostCode ships an update every 3 weeks, and Html Preview every 6 days. Most recently, PostCode was updated on October 25, 2026 and Html Preview on October 28, 2026.

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