Comparison

Caledari vs SLATE

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

Head to head
About

Caledari

Features
Read full description

Most calendars shout. Caledari whispers. Caledari is a calm calendar built around one idea: you should see your day, not manage it. No month grid. No clutter. Just what's next, one clear card, and a place to say what changed. Say it or type it. Tell Caledari "move my 2pm to Friday" or "remind me 3 hours before" and it happens. Speak or type, your choice. Move, reschedule, set an alarm, or clear something off in a single tap. Always know what's next. Add the Caledari widget to your Home Screen or Lock Screen and your next event is always one glance away. Your own booking link. Share caledari.com/you so anyone can book time with you. Caledari offers times that don't clash with your day, and you approve every request. Every calendar, one calm view. iCloud, Google, and Outlook brought into one quiet day. One tap, no account setup. Private by design. Your calendar stays on your phone. No ads. No nag screens. No dark patterns. Caledari Plus. Start with 7 days free, then Caledari Plus keeps your days clear for $3.99 per month or $19.99 per year, auto renewing unless cancelled at least 24 hours before the period ends. Manage or cancel any time in your App Store settings. Today, calmly.

About

SLATE

Features
Read full description

Slate is a clean, modern PDF annotation app built for professionals, students, and anyone who works with documents. Import PDFs, review files, add annotations, sign documents, and export completed workβ€”all from your iPhone or iPad. Whether you're reviewing contracts, completing forms, marking up plans, or organizing paperwork, Slate helps you stay focused with a simple, distraction-free workspace. FEATURES β€’ Import and annotate PDF documents β€’ Add text anywhere on the page β€’ Create and place signatures β€’ Insert dates, initials, and checkmarks β€’ Highlight important information β€’ Draw freehand with customizable pen tools β€’ Add stamps and annotations β€’ Save your progress and revisit documents later β€’ Export and share completed PDFs β€’ Designed specifically for iPhone and iPad BUILT FOR EVERYDAY WORK Slate is ideal for: β€’ Business professionals β€’ Contractors and field teams β€’ Students and educators β€’ Real estate professionals β€’ Office administration β€’ Anyone who regularly works with PDF documents SIMPLE BY DESIGN Slate was designed around one goal: making document markup fast and intuitive. Every feature is focused on helping you review, complete, and share documents without unnecessary complexity.

Screenshots

Caledari4 screens
SLATE4 screens

Verdict

The call

The clearest difference is in-app purchases: SLATE at none against Caledari's 2. Caledari's advantage is iOS requirement (18.0 vs 26.5). On price, ads and device support there is nothing between them.

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Caledari sells 2 in-app purchases, starting at $3.99 per month. SLATE asks for nothing beyond the download.

Scorecard2 real differences Β· 4 level
Caledari versus SLATE: the parameters behind the verdict, then further details
ParameterCaledariSLATE
PriceFreeFree
Update frequencyEvery 2 daysβ€”
AdsNoNo
In-app purchasesYesNo β€” better
DevicesiPhoneiPhone, iPad β€” better
Requires iOS18.0 β€” better26.5
Further details β€” not scored
Size4 MB4 MB
Age rating4+4+
DeveloperDaryl AriasDanielle Dockery

In-app purchases

2 purchases

Caledari

Subscriptions2
  • Caledari Plus Monthly7 Days trial$3.991 Month
  • Caledari Plus Yearly7 Days trial$19.991 Year
None

SLATE

No in-app purchases

Questions

Is Caledari free?
Caledari is free to download, with in-app purchases available.
Is SLATE free?
SLATE is free to download, with no in-app purchases.
Do Caledari or SLATE have ads?
Neither Caledari nor SLATE shows ads.

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