Instantly AI vs Cal.com
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Instantly AI
This app provides on-the-go email management. Read replies, quickly respond or forward messages, and search your inbox using various filters.
- Read emails on the go
- Quickly reply to emails
- Forward emails
- Search emails with filters
- Manage Unibox
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Instantly app allows you to read the replies on the go, quickly reply or forward emails, as well as search the emails based on different filters.
Cal.com
This app simplifies scheduling meetings on the go. Book, reschedule, or cancel appointments with a few taps, syncing directly with your calendar. Receive smart notifications and integrate with your existing tools for seamless collaboration.
- Instant meeting booking, rescheduling, and cancellation
- Real-time calendar synchronization
- Smart push notifications for events
- Integration with email and video tools
- Mobile-friendly scheduling
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Cal.com Companion App: Schedule Meetings Effortlessly on the Go! Tired of juggling calendars and emails to book meetings? The Cal.com Companion App brings the power of Cal.com right to your fingertips, making scheduling seamless, fast, and mobile-friendly. Whether you're in a rush between calls or planning your week from anywhere, this app ensures you never miss a beat. Key Features: - Instant Scheduling: Book, reschedule, or cancel meetings with just a few taps—no desktop required. - Real-Time Availability: Syncs with your Cal.com calendar to show open slots and avoid double-booking. - Smart Notifications: Get push alerts for upcoming events, reminders, and confirmations to stay organized. (coming soon) - Easy Integration: Connects seamlessly with your email, video tools, and team calendars for hassle-free collaboration. Perfect for busy professionals, freelancers, and teams who value time. Download now and transform how you manage your schedule—anytime, anywhere! Available on iOS. Free for individuals to download without a subscription.
Screenshots
Verdict
The clearest difference is rating: Cal.com at 4.9 against Instantly AI's 2.9. Cal.com also leads on update cadence (every 4 weeks vs every 2 months) and ratings volume (220 vs 36). On price, review sentiment, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
Cal.com holds the better App Store score, 4.9 against 2.9. That said, the two scores are not equally well evidenced: Cal.com has 220 ratings behind it against 36, so its average is the more settled of the two. Written reviews complicate that: 59% of Instantly AI's written reviews are positive against 55% of Cal.com's, so the app with the better star average is not the one people write more warmly about.
Instantly AI ships an update every 2 months, Cal.com every 4 weeks. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.
| Parameter | Instantly AI | Cal.com |
|---|---|---|
| Price | Free | Free |
| Rating | 2.9 (36 ratings) | 4.9 (220 ratings) — better |
| Positive reviews | 58.9% of reviews — better | 54.5% of reviews |
| Number of ratings | 36 | 220 — better |
| Update frequency | Every 2 months | Every 4 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 16.4 | 15.1 — better |
| Further details — not scored | ||
| Size | 44 MB | 44 MB |
| Age rating | 4+ | 4+ |
| Developer | Foo Monk LLC | Cal.com, Inc. |
Customer experience
Instantly AI
Cal.com
Bugs and requests
Instantly AI
Reported bugs
15 issues- Cannot sign in via Google or set password
- Same emails showing up repeatedly in unibox
- No send button for replies on iPhone
- App logs out every time app is closed
- App keeps logging out every few hours
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- Leads don't stay labeled
- Refreshing the inbox lags
- Workspaces lag when switching
- Button to send replies disappears or hides
- Cannot delete emails from inbox via the app
- Cannot SEND emails via the app
- Number 3 key triggers Macro
- Autoscrolling doesn't work
- Paste doesn't work 7/10 times
- Unfixable error when trying to switch to a different workspace unibox
Requested features
10 requests- More options for campaign visibility
- Ability to change campaign copy in app
- In-depth notification settings
- Add more features to notifications
- Keep me signed in option
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- See campaign stats on mobile
- Create campaigns on mobile
- Edit campaign details on mobile
- Add functionality for 'Other' tab emails
- View campaign performance in app
Cal.com
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Instantly AI
No in-app purchases
Cal.com
No in-app purchases
