Big CalA calendar made for older adults.
A personal organizer for appointments, family visits, and the things you want to do. Bigger text and clear buttons help you see your plans and get on with your day.
Use it on your own, or ask someone you trust to help you get started. You can tap to add a plan or choose to talk to Cal.
Coming soon in the United States for iPhone and iPad.
Bigger words.
Buttons you can find.
A dentist appointment. Lunch with a friend. A grandchild’s school play. The ordinary plans that matter to you.
Choose a text size that feels comfortable, find your next plan, and keep the people you call in one place.
The everyday things, made easier.
You don’t have to use every feature. Start with what’s useful to you.
What’s on today?
Open Big Cal to see your plans. Look at today, or switch calendar views to check what’s coming up.
Adjust the text size to what feels comfortable for you.
Rather talk than type?
You can ask Cal about your day or say what you want to add. If something is missing, Cal asks. When a simple request has all the details, Big Cal can save it without asking you to say yes again.
Cal uses AI, which can make mistakes. Wait for the saved confirmation, and check the date and time.
Read how voice and OpenAI sharing workA reminder. A phone number. A paper copy.
Save people you call often, add calendar reminders where supported, or print your plans for the fridge. You can also choose a photo of a schedule and ask AI to read it. Check the suggested events before saving them.
You choose what to use and what to leave for another day.
Have a try.
You won’t change your calendar.
New apps can take a little getting used to. That’s why Big Cal has a place to practice.
Try adding an event, answering a question, or changing your mind. The lesson walks you through it, and your real appointments stay as they are.
You can use the buttons without speaking. There’s no live AI conversation or voice charge for practice.
These are real simulator screenshots of the app being prepared for release. Any appointments shown are examples, not personal calendar data.
See the details.
Know when it’s saved.
Pick the day, time, and how long you’ll need. After Big Cal saves an event and checks it in your calendar, you’ll see a clear confirmation with the details.
A little help from Cal.
Cal is there when you want a hand. You’ll see when Cal is listening, working on your request, or confirming a saved event. Clear words tell you what’s happening, too.
Prefer things still and quiet? The app respects Reduce Motion, and you can use the calendar without voice.
Here’s what you might say.
Tap an example to read what happens next. This page won’t start a conversation or change your calendar.
“Add lunch tomorrow at noon for an hour.”
If Big Cal has the date, time and calendar it needs, it can add this simple event and check that it saved. If anything needs clarification or review, it asks first.
When the simple request is clear, you don’t have to say yes again.
“Add lunch tomorrow.”
Cal asks for the missing time. Nothing is saved until the details are clear.
If you change your mind, say so before the event is saved.
“I’d rather use the calendar by hand.”
That’s fine. You can view and change Apple Calendar without allowing OpenAI sharing or buying a voice subscription.
Practice lessons also have buttons, so you can try them without speaking.
Your plans.
Your choices.
You can use the calendar without talking to AI.
Big Cal asks before sending information to OpenAI. You decide whether to use AI features, and you can turn sharing off in the app.
Camera and photo tools use the pages you choose. Saved people stay on your device; Big Cal doesn’t upload your whole address book. Details you include in an AI request or invitation may be shared to carry it out.
Your privacy, in plain languageA few common questions.
Is Big Cal available yet?
We’re preparing Big Cal for the App Store. It is not available for public download yet. Visit our App Store availability page for the download link when it is ready. No pre-order or payment is being collected here.
Do I need a ChatGPT account?
No. If you choose voice, Big Cal handles the OpenAI connection. You’ll usually sign in to Big Cal for free voice. An already linked installation or a verified monthly plan may also provide access. The app checks this during setup.
What will it cost?
The calendar, manual event creation and calendar reminders will be free. The planned optional voice plan is $6.99 a month for 30 minutes of conversation with Cal, billed through Apple and renewing monthly unless cancelled. There are no automatic overage charges. You’ll see the final price and terms before buying anything.
Will it replace my Apple Calendar?
Big Cal works with Apple Calendar on your device after you grant access. If your calendar already syncs with iCloud or another service, those settings still apply.
Can someone help me get started?
Yes. Someone you trust can sit with you while you choose your settings. Big Cal includes setup guidance and practice lessons. You stay in charge of your permissions, account, and calendar.
A calendar that fits your day.
Big Cal is provided by Actually Good Ideas LLC.
Not sure about something? Send us a question.
Get help with Big Cal