Comparison

OneCalendar vs ID

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

Head to head
About

OneCalendar

This app combines multiple productivity tools into a single interface. Manage your schedule, to-do lists, weather forecasts, and notes with photo diaries, all in one place.

Highlights
  • Calendar synchronization
  • To-do list management
  • Weather forecasts
  • Notes with photo support
  • Diary creation
Features
Read full description

OneCalendar - All in one calendar: Awesome Calendar + AI To-do list + Notes + Planner . OneCalendar brings your calendar, appointments, to-dos and focus tools together in one simple place. Plan your schedule, organize tasks, manage appointments and stay focused without switching between multiple apps. SMART CALENDAR View your schedule by month, week or year. Keep track of events, holidays and lunar dates in a clean, easy-to-read calendar. AI PLANNING ASSISTANT Create appointments and tasks using natural language. Simply type or speak requests such as: “Lunch with Mary at 1pm” “Dentist appointment Friday at 3pm” “Buy groceries tomorrow” OneCalendar turns your request into an organized task or appointment in seconds. APPOINTMENTS Keep meetings, appointments and important events in one simple list. Pin important items, view today's schedule and quickly find what is coming next. TO-DO LIST Capture tasks as soon as you think of them. Organize to-dos with filters, reminders and pinned items so nothing gets forgotten. FOCUS TIMER Start a focused work session and track how much time you spend concentrating. Review your focus activity by day, week or month. IOS CALENDAR INTEGRATION Show events from your iOS calendars alongside your OneCalendar plans, including meetings, birthdays, holidays and other events. LUNAR CALENDAR View lunar dates directly inside the calendar for quick reference alongside the solar calendar. EVERYTHING IN ONE PLACE • Calendar • Appointments • To-Dos • AI Assistant • Reminders • Focus Timer • Lunar Calendar • iOS Calendar Events Whether you are planning your workday, organizing personal tasks or simply trying to stay focused, OneCalendar helps you see what matters and get things done.

About

ID

Features
Read full description

IDShield keeps your identity documents secure and gives you full control over how they're shared. Snap a photo of your passport, ID card, or driving license, then add a visible watermark before sending it to anyone - so your documents can never be misused. Hotels, landlords, banks and employers keep asking for a copy of your ID. Once you send it, you lose control of where it goes. ID-Shield makes every copy useful only for the purpose you agreed to, and shows you who has one. Share your ID. Not your identity. HOW IT WORKS 1. Scan your passport, ID card or driver's license, or import a photo or PDF. 2. Tap Smart Redact to black out what the recipient doesn't need. 3. Add the purpose and recipient. ID-Shield stamps the copy with them, the date and a unique tracing code. 4. Share it as an image or PDF, from the app or straight from the share sheet. SMART REDACT Finds faces, names, dates, document numbers and the machine-readable zone (MRZ) on the device, and blacks them out in one tap. Fine-tune by hand with solid, blur, mosaic or stamp redactions. SAFE-COPY PRESETS Choose what to hide for each kind of document: German ID card (access number, serial number and MRZ), Swiss ID or passport, passport for hotel check-in, document number only, or everything except your name and photo. WATERMARKS WITH A PURPOSE Every copy says what it's for, who it's for and when it was made, such as "Hotel Booking • Hilton Bangkok • 3 Nov 2026". A copy made for one purpose is hard to reuse for another. TRACING CODES Each copy carries its own code and QR stamp. If a copy ever turns up where it shouldn't, search the code and see exactly who you gave it to. FRONT AND BACK ON ONE SHEET Multi-page documents become a single A4 or US Letter copy, ready to email, upload or print. WHO HAS MY ID See every recipient in one place, with each copy, its purpose and date. When a copy is no longer needed, send a ready-made GDPR (Art. 17) deletion request in one tap. PROTECT & SHARE Redact and watermark straight from the share sheet in Photos, Files or Mail, without opening the app. MORE • Password-protected PDFs • Expiry reminders 6 months and 1 month before a document expires • Shortcuts and Siri: "Create a protected copy with ID-Shield" • Watermark presets for the recipients you share with often • Face ID, Touch ID or passcode lock • Drag and drop and Quick Look on Mac and iPad PRIVACY BY DESIGN • Scanning, detection, redaction and watermarking all happen on your device • No account, no ads, no analytics, no third-party SDKs • Optional iCloud sync uses your private iCloud database. Turn it off and everything stays on your device. NATIVE ON IPHONE, IPAD AND MAC Built in SwiftUI for each platform, with a split view on iPad and a two-column layout, keyboard shortcuts and drag and drop on Mac. Available in English, German, French, Spanish, Japanese, Chinese and Thai. PRICING Your first protected copy is free. Unlock unlimited copies with a single one-time purchase. No subscription. ID-Shield is a privacy tool, not a legal service. Check whether the recipient needs an original or certified copy, and what your local rules require. Terms of Use: https://kk-studio.ch/terms/ Privacy Policy: https://kk-studio.ch/privacy/

Screenshots

OneCalendar4 screens
ID4 screens

Verdict

The call

The clearest difference is in-app purchases: OneCalendar at none against ID's 1. ID's advantage is ads (none vs shown) and update cadence (every 3 weeks vs every 125 months). On price, 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

Both are free to download. ID sells 1 one-off in-app purchase. OneCalendar asks for nothing beyond the download.

UpkeepUpdate frequency

OneCalendar ships an update every 125 months, ID every 3 weeks. The most recent releases landed on November 2, 2026 and November 5, 2026 respectively.

Scorecard3 real differences · 7 level
OneCalendar versus ID: the parameters behind the verdict, then further details
ParameterOneCalendarID
PriceFreeFree
Rating4.0 (1 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 125 monthsEvery 3 weeks — better
AdsYesNo — better
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad, Mac — better
Requires iOS17.017.0
Further details — not scored
Size12 MB4 MB
Age rating9+4+
DeveloperHoan NgoKanchalika Kongyong

In-app purchases

None

OneCalendar

No in-app purchases

1 purchases

ID

One-time1
  • ID-Shield$9.99

Questions

Is OneCalendar free?
OneCalendar is free to download, with no in-app purchases.
Is ID free?
ID is free to download, with in-app purchases available.
Do OneCalendar or ID have ads?
OneCalendar shows ads; ID does not.
Which is updated more often, OneCalendar or ID?
OneCalendar ships an update every 125 months, and ID every 3 weeks. Most recently, OneCalendar was updated on November 2, 2026 and ID on November 5, 2026.

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