Comparison

Timelapse Ref Calc vs Merge PDF

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

Head to head
About

Timelapse Ref Calc

Features
Read full description

This is a switchable calculator that lets you choose what to calculate at any given time regarding timelapse photography. Recording time, interval (in seconds) FPS (frames per second), video duration and a hint of images needed. To see more apps like this, go to www.discobajas.com

About

Merge PDF

Easily combine multiple PDF documents into a single file on your iPhone or iPad. This fast, offline tool allows you to organize, merge, and secure your PDFs without size limits, perfect for documents, reports, and eBooks.

Highlights
  • Merge multiple PDF files
  • Rearrange PDF order
  • Fast processing
  • Offline and secure
  • Supports all PDF versions
  • Organize documents
Read full description

Merge PDF – Combine PDF Files is the easiest way to join multiple PDF documents into a single file on your iPhone or iPad. Whether you're organizing scanned documents, merging reports, or combining eBooks, this fast and powerful PDF merger tool has you covered. With a clean interface and lightning-fast processing, this app lets you merge unlimited PDF files without size limits. It’s designed to work 100% offline—keeping your documents private and secure on your device. Key Features: Merge Multiple PDF Files Select two or more PDF documents and combine them into one organized file. Smart PDF Organizer Rearrange the order of PDF files before merging with an intuitive drag-and-drop tool. Fast & Lightweight No waiting—merge large files in seconds. Offline & Secure Your files never leave your device. 100% local processing. Supports All PDF Versions Works with scanned PDFs, forms, books, reports, and more. Why Use Merge PDF? Combine school or office documents into one clean file Merge scanned pages into a single report Organize multiple PDF receipts or invoices Prepare contracts, books, or notes efficiently Keep everything in one place with a single tap Perfect For: Students and teachers Freelancers and professionals Lawyers, accountants, and business users Anyone who needs a quick and reliable PDF combiner How It Works: Open the app Tap “Choose PDFs” Select two or more files from your device Reorder if needed, then tap “Merge” Export or share your combined PDF instantly Your Privacy Matters: All PDF processing happens locally on your iPhone or iPad. We never store or access your documents, ensuring your privacy and file security. Download Merge PDF – Combine PDF Files now and simplify your digital life with the best PDF merging tool on the App Store! Terms of Use: https://codifyappsprivacy.blogspot.com/p/terms-of-use.html

Screenshots

Timelapse Ref Calc1 screens
Merge PDF3 screens

Verdict

The call

The clearest difference is price: Merge PDF at Free against Timelapse Ref Calc's $0.49. Timelapse Ref Calc's advantage is in-app purchases (none vs 2) and ads (none vs shown). On 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

Merge PDF is free to download; Timelapse Ref Calc costs $0.49 up front. Merge PDF sells 2 in-app purchases, starting at $0.99 per 7 days. Timelapse Ref Calc asks for nothing beyond the download.

UpkeepUpdate frequency

Timelapse Ref Calc ships an update every 4 months, Merge PDF every 10 months. The most recent releases landed on November 4, 2026 and November 9, 2026 respectively.

Scorecard4 real differences · 6 level
Timelapse Ref Calc versus Merge PDF: the parameters behind the verdict, then further details
ParameterTimelapse Ref CalcMerge PDF
Price$0.49Free — better
Rating—4.6 (16 ratings) — better
Positive reviews—0.0% of reviews
Number of ratings—16 — better
Update frequencyEvery 4 months — betterEvery 10 months
AdsNo — betterYes
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS13.013.0
Further details — not scored
Size0 MB46 MB
Age rating4+4+
DeveloperStein Erik NilsenMuhammad Awais Younas

In-app purchases

None

Timelapse Ref Calc

No in-app purchases

2 purchases

Merge PDF

Subscriptions2
  • Premium Week$0.997 Days
  • Premium Month$3.991 Month

Questions

Is Timelapse Ref Calc free?
Timelapse Ref Calc costs $0.49, with no in-app purchases.
Is Merge PDF free?
Merge PDF is free to download, with in-app purchases available.
Do Timelapse Ref Calc or Merge PDF have ads?
Merge PDF shows ads; Timelapse Ref Calc does not.
Which is updated more often, Timelapse Ref Calc or Merge PDF?
Timelapse Ref Calc ships an update every 4 months, and Merge PDF every 10 months. Most recently, Timelapse Ref Calc was updated on November 4, 2026 and Merge PDF on November 9, 2026.

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