PDF Maker vs ChangeTime
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PDF Maker
Transform your device into a portable document studio. Convert images to PDF, scan documents, merge files, and compress PDFs in seconds. This app offers a suite of tools for managing and editing documents on the go, with a focus on privacy and an intuitive interface.
- Convert images to PDF
- Document scanner with edge detection
- Merge multiple PDF files
- Compress and reduce PDF size
- Flatten interactive PDF elements
- Rotate pages
- View and edit PDF pages
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PDF Maker transforms your iPhone into a portable document studio. Whether you need to convert photos to PDF, merge contracts, compress large files, or scan receipts on the go - everything happens in seconds, right in your pocket. CONVERT PHOTOS TO PDF Turn any image into a professional PDF document. Select photos from your library, snap pictures with your camera, or import files. Adjust quality settings from draft to maximum resolution. Choose page formats including A4, Letter, Legal, or let the app fit pages to your images automatically. Perfect for digitizing old photographs, creating photo albums, or preparing image-based reports. DOCUMENT SCANNER Your phone camera becomes a powerful scanner. Capture documents, receipts, whiteboards, and handwritten notes with automatic edge detection. The built-in scanner recognizes document boundaries and optimizes contrast for crystal-clear results. No more hunting for a scanner - handle paperwork anywhere, anytime. MERGE MULTIPLE PDFs Combine separate PDF files into one organized document. Drag to reorder pages exactly how you want them. Great for assembling project documentation, combining invoices for expense reports, or creating comprehensive portfolios from multiple sources. COMPRESS & REDUCE SIZE Large PDF files slow everything down - email attachments bounce back, cloud storage fills up, sharing becomes frustrating. Our compression engine shrinks file sizes significantly while preserving readable quality. Send documents faster and save storage space without sacrificing clarity. FLATTEN PDF DOCUMENTS Working with forms that have fillable fields? Need to lock down annotations and comments? Flatten converts interactive elements into static content. This prevents further editing and ensures your document looks identical on every device and printer. ROTATE PAGES Fix upside-down scans or sideways photos instantly. Rotate individual pages or entire documents in 90-degree increments. Preview changes before saving. Simple controls make orientation corrections effortless. VIEW & EDIT Browse your PDFs with smooth scrolling and sharp rendering. Select specific pages to rotate, delete, or extract into new documents. Thumbnail view helps you navigate long files quickly. Edit tools give you control over document structure without needing desktop software. INTUITIVE DESIGN Dark interface reduces eye strain during extended use. Clean layout puts every tool within easy reach. Haptic feedback confirms your actions. The app responds quickly — no waiting around for operations to complete. PRIVACY FIRST Your documents stay on your device. No files get uploaded to external servers for processing. What you create remains yours alone. Built for everyone who handles documents regularly: students assembling research papers, professionals preparing client materials, small business owners organizing records, and families preserving memories. PDF Maker brings desktop-level PDF tools to your phone - lightweight, fast, and always available. Subscription Terms: Payment charged to iTunes Account. Auto-renews unless disabled 24 hours before period ends. Manage in Account Settings. https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Download now and discover how simple PDF work can be.
ChangeTime
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Everything in your home has a clock on it. The furnace filter you installed last winter, the water filter in the fridge, the batteries in the smoke detector — they all need changing, and none of them will remind you. ChangeTime will. ADD ITEMS IN SECONDS • Snap a photo so every item is easy to spot in your list • Scan the barcode — the second time you buy the same filter, ChangeTime fills in everything and suggests the change date automatically • Or just type it in, with brand, description, and a private note for model numbers and sizes SET THE CHANGE DATE YOUR WAY • Say it: hold the mic and speak — "3 months from now" — and ChangeTime sets the date • Smart suggestions: ChangeTime knows the typical life of furnace filters, water filters, detector batteries, and more, and offers the right interval with one tap • Or pick the day on the calendar NEVER MISS A CHANGE • Reminders 7 days before, the day before, and on change day • Optional daily nudges while something stays overdue • Add change dates to your iOS Calendar automatically • See everything at a glance: Good, Soon, and Overdue — tap to filter ORGANIZED BY LOCATION OR ITEM • Kitchen, garage, basement, camper, musical intrument or vehicle— group items where they live, and filter the list with a tap • Swiped in a new filter? Tap "I Changed It" right on the reminder — the swap is logged and the next change is scheduled automatically STICK A LABEL ON IT • Print a QR label for any item and stick it on the equipment and scan it with your iPhone camera to jump straight to that item — check the date or mark it changed without searching ON YOUR WRIST • The full list, color-coded, on Apple Watch • Add items and update change dates from the watch — by dictation, smart suggestion, or a calendar picker — and everything syncs to your iPhone PRIVATE BY DESIGN • Everything stays on your device. No accounts, no cloud, no tracking — the camera, microphone, and speech recognition are used only in the moment, on the device. Install it. Change it on time. Repeat.
Screenshots
Verdict
The clearest difference is in-app purchases: ChangeTime at none against PDF Maker's 3. ChangeTime also leads on update cadence (every 4 days vs every 3 months). PDF Maker's advantage is iOS requirement (16.0 vs 26.5). On price, ads 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
Both are free to download. PDF Maker sells 3 in-app purchases, starting at $2.99 per month. ChangeTime asks for nothing beyond the download.
PDF Maker ships an update every 3 months, ChangeTime every 4 days. The most recent releases landed on October 18, 2026 and October 3, 2026 respectively.
| Parameter | PDF Maker | ChangeTime |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 3 months | Every 4 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, Mac | iPhone, iPad, Apple Watch |
| Requires iOS | 16.0 — better | 26.5 |
| Further details — not scored | ||
| Size | 14 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Igor Bidenko | Formatix, LLC |
In-app purchases
PDF Maker
- PDF Maker$2.991 Month
- PDF Maker3 Days trial$9.991 Year
- PDF Maker$14.99
ChangeTime
No in-app purchases







