Comparison

Slate vs PDFOne

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

Head to head
About

Slate

Combines your calendar events and reminders into a single, streamlined daily view. Includes a dedicated space for daily notes that can be exported. Available across iPhone, iPad, and Mac, syncing seamlessly with iCloud.

Highlights
  • Unified daily view of calendar events and reminders
  • Integrated daily note-taking
  • Exportable daily notes
  • iCloud syncing
  • Cross-device compatibility (iPhone, iPad, Mac)
Features
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Why I built Slate: Apple’s Calendar and Reminders are great, but switching between them all day was a hassle. I just wanted one clean place for my day, with space for a daily note beside my plans. No extra features. No clutter. Just your day, kept simple. • Calendar events and reminders in one daily view • A daily note you can export anytime • Instant search across all events, reminders, and notes • iPhone, iPad, and Mac, synced with iCloud Slate uses the Calendar and Reminders you already have. No ads. No accounts. No tracking.

About

PDFOne

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**PDFOne makes working with PDFs simple on iPhone.** Open a document, organize its pages with intuitive gestures, add new content, fill in your PDF, and place your signature — all within a clean interface designed to keep the document at the center of your work. Whether you need to fix a few pages or reorganize a larger document, PDFOne gives you the essential tools without unnecessary complexity. **ORGANIZE YOUR PAGES** View your document as a Grid, Carousel, or List and choose the layout that works best for you. You can: • reorder pages with drag and drop; • select multiple pages; • create and manage page stacks; • duplicate or delete pages; • replace pages while keeping control of your document; • extract and reorganize content when needed. **ADD NEW CONTENT** Insert additional PDFs exactly where you need them, or create new pages from: • PDF documents; • images from your Photos library; • blank pages. **FILL IN PDFs** Add text directly to a PDF page, position it where it belongs, and adjust its size before applying it to the document. Perfect for forms, administrative documents, and PDFs that need additional information. **ADD YOUR SIGNATURE** Import a signature and keep it in your signature library so it is ready whenever you need it. Add multiple signatures, move them around the page, resize them, or remove them before applying your changes to the PDF. **SAVE AND SHARE** Save your changes, create a separate copy, or share the finished PDF using the familiar sharing tools built into iOS and iPadOS. **DESIGNED TO STAY SIMPLE** PDFOne is built as a native Apple app, with familiar controls, direct interactions, light and dark appearances, and an interface that keeps the focus on your document. No unnecessarily complicated tools. Just what you need to organize, fill, sign, and manage your PDFs.

Screenshots

Slate4 screens
PDFOne4 screens

Verdict

The call

The clearest difference is price: Slate at Free against PDFOne's $2.99. On update cadence, 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

Slate is free to download; PDFOne costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 4 days. The most recent releases landed on October 20, 2026 and October 18, 2026 respectively.

Scorecard1 real difference · 9 level
Slate versus PDFOne: the parameters behind the verdict, then further details
ParameterSlatePDFOne
PriceFree — better$2.99
Rating5.0 (2 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings2 — better—
Update frequencyEvery 4 daysEvery 4 days
AdsNoNo
In-app purchasesNoNo
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, Mac — betteriPhone, iPad
Requires iOS17.017.0
Further details — not scored
Size6 MB9 MB
Age rating4+4+
Developer文龙 吴ANTONIO PADALINO

In-app purchases

None

Slate

No in-app purchases

None

PDFOne

No in-app purchases

Questions

Is Slate free?
Slate is free to download, with no in-app purchases.
Is PDFOne free?
PDFOne costs $2.99, with no in-app purchases.
Do Slate or PDFOne have ads?
Neither Slate nor PDFOne shows ads.
Which is updated more often, Slate or PDFOne?
Slate ships an update every 4 days, and PDFOne every 4 days. Most recently, Slate was updated on October 20, 2026 and PDFOne on October 18, 2026.

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