Vessa vs Groop
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Vessa
This app helps shift workers plan their schedules and optimize sleep. It automatically generates sleep and caffeine plans based on your work shifts, adapting to changes. Features include roster import, calendar integration, and customizable sleep reminders.
- Shift work calendar
- Automatic sleep and caffeine planning
- Roster import from photos
- iPhone Calendar integration
- Home and Lock Screen widgets
- Customizable sleep reminders
- Shift change adaptation
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Vessa is a shift work calendar that also plans your sleep. Enter your shifts, or photograph your roster and let Vessa read it, and see your month at a glance. Then Vessa turns the shifts you actually work into a 72-hour sleep and caffeine plan, and re-plans it when a shift moves. Night shifts, rotating blocks, short turnarounds and last-minute swaps: the calendar keeps up, and so does the plan. FREE • A shift calendar: enter shifts by hand, as many as you like, or start from templates for 3×12, fixed nights, 24/48, DuPont and other common rotations • Your first roster import from a photo • Your shifts in the iPhone Calendar: one event per shift in a "Vessa" calendar you can share from the Calendar app, with your planned sleep if you want it • Share your next four weeks as one page, as an image or a PDF • Home Screen and Lock Screen widgets with today's shift and your next sleep • A note on any day: where you're working, who you're with • A 72-hour sleep plan built from your shifts: main sleep, recovery sleep, pre-shift naps, off-day sleep, wind-down and caffeine cutoff • Every sleep is a switch: turn naps, recovery sleep and days-off sleep on or off, or keep your days off free of reminders • Edit any sleep for one day or for good • The plan re-plans itself when a shift changes, and tells you three days before your schedule runs out PREMIUM • Roster import, every cycle: photograph your roster, tap your name, confirm what Vessa read. Nothing to type • Alarms set by Vessa: wake-ups for every sleep in your plan go on your iPhone as real alarms, and move when your shift moves • Sleep ledger: what you planned next to what you slept, read from Apple Health, day by day and by sleep type. Needs an Apple Watch or a sleep tracker that writes to Apple Health Premium is an optional auto-renewing subscription, monthly or annual; the annual plan starts with a 14-day free trial. Cancel any time in Settings → your name → Subscriptions. PRIVACY Roster photos are read on your device and never uploaded. Apple Health data is read on your device and never leaves it. Your shifts, day notes and plan settings sync to your account so they survive a new phone. If you turn on Calendar, your shifts are written to a calendar on your iPhone, and Vessa reads only that calendar. Vessa is designed for nurses first, and works for EMS, firefighters, factory workers, security, drivers, hospitality and anyone on demanding shifts. Vessa is a planning and self-care tool. It does not provide medical advice, diagnosis or treatment. If you have persistent sleep problems, please consult a qualified healthcare professional. Terms of Use: https://vessa.health/terms-of-use Apple Standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://vessa.health/privacy-policy
Groop
Effortlessly schedule events directly within your group chats. Compare availabilities in a shared calendar without leaving your conversation. Plan meetings, hangouts, or vacations efficiently across time zones.
- Schedule events in group chats
- Integrated availability comparison
- Cross-time zone support
- No account required
- Directly within messages
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DEVELOPED BY ESTHER HE & ALISON CHEN Tired of having everyone leave the group chat for another site just to schedule events? Schedule directly in your conversations with Groop! Keep the discussion going while organizing event details Compare everybody’s availabilities in one calendar directly in the chat Plan all meetings, hang-outs, appointments, or vacations efficiently without any disconnect Works across different time zones No account or login required How to Use: Open Messages and tap the + button Select Groop Enter event name, time frame, and dates Send the Groop message Tap the message bubble to add your availability Enter a name and submit Tap the bubble again to view the combined calendar or edit your availability Have any questions? Contact us at groopsupport@gmail.com
Screenshots
Verdict
The clearest difference is in-app purchases: Groop at none against Vessa's 2. Groop also leads on ratings volume (4 vs 1) and iOS requirement (17.0 vs 26.1). On price, rating, ads 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
Both are free to download. Vessa sells 2 in-app purchases, starting at $7.99 per month. Groop asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for Vessa against 5.0 for Groop. Both are backed by a comparable volume of ratings — 1 and 4 respectively.
| Parameter | Vessa | Groop |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (4 ratings) |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 1 | 4 — better |
| Update frequency | Every 10 days | — |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Freemium | Free — better |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 26.1 | 17.0 — better |
| Further details — not scored | ||
| Size | 33 MB | 4 MB |
| Age rating | 4+ | 9+ |
| Developer | Murat Keskin | ALISON CHEN |
Customer experience
Vessa
Groop
In-app purchases
Vessa
- Monthly$7.991 Month
- Annual14 Days trial$39.991 Year
Groop
No in-app purchases









