Shift Alarm vs FlexAlarm
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Shift Alarm
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Work shifts and lost track of which days you're on or off? Shift Alarm is the alarm clock that turns itself on for your work days and off for your days off, automatically, based on your schedule. Built for anyone working 12x36, 6x2, 6x4, or rotating shifts: nurses, security guards, factory workers, or any job with a schedule that keeps changing. WORKS WITH ANY SCHEDULE Set up your shift cycle once (6x2, 6x4, 12x36, or any other combination of work days and days off) and the app figures out on its own, every single day, whether today's alarm should be on or off. ROTATING SHIFTS (MORNING / AFTERNOON / NIGHT) Work in a factory with shifts that rotate between morning, afternoon, and night? Set each shift with its own alarm time and the app switches the alarm time automatically based on the day's shift. VISUAL CALENDAR See at a glance, on a monthly calendar, which days will have the alarm on and which are your days off, before the day even arrives. WORKS OFFLINE, NO ACCOUNT NEEDED No login, no internet required. Everything stays saved on your own phone. A REAL ALARM Rings for real, with sound and vibration, even with the phone locked, and if you restart the phone, alarms are rescheduled automatically. No more forgetting the alarm on during your day off or off during a work day. Set it up once and let Shift Alarm handle the rest. Free 15 day trial. After that, choose an annual subscription or a one time purchase (lifetime). Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
FlexAlarm
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Your schedule changes. Your alarms follow. FlexAlarm is the alarm clock for people who don't work 9 to 5. Nurses, doctors, pilots, factory and hotel workers, students: set your morning routine once, and when your start time changes, every alarm moves with it. ONE ROUTINE, EVERY ALARM Wake up, shower, breakfast, leave home: each alarm is set relative to when work starts. Starting at 6:00 on Monday and 11:00 on Tuesday? Change one time and the whole routine shifts. No more editing five alarms by hand. PLAN YOUR WEEK YOUR WAY • Weekly plan: a start time for each day • Rotating shifts: 2 days, 2 nights, 4 off… set the cycle once, FlexAlarm maps it forever • Calendar: pick the calendar your shifts are in, alarms follow every event • Paste Shifts: copy your roster from a message or email, every date is added WHEN PLANS CHANGE • Skip or move a single day in one tap, your usual plan stays the same • Vacation mode: no alarms until you're back • Sick days: silence a day, shown in red on your calendar YOUR MONTH AT A GLANCE • Month calendar colored by routine • Pick a color for each routine • Monthly stats: alarms, earliest and usual wake-up REAL ALARMS • Rings even in Silent mode, right on your Lock Screen • Snooze with a live countdown • Choose a sound for each routine • Bedtime reminder based on tomorrow's first alarm ALWAYS WITH YOU • Home Screen and Lock Screen widgets with your next alarm and upcoming days • Siri & Shortcuts: "Skip tomorrow in FlexAlarm", "Next alarm in FlexAlarm" • Export your plan to Apple Calendar PRIVATE BY DESIGN No account, no sign-up. Your schedule stays on your iPhone. Available in English, French, Spanish and Portuguese.
Screenshots
Verdict
The clearest difference is update cadence: FlexAlarm at every 3 days against Shift Alarm's weekly. On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
Shift Alarm ships an update weekly, FlexAlarm every 3 days. Both last shipped on October 31, 2026.
| Parameter | Shift Alarm | FlexAlarm |
|---|---|---|
| Price | Free | Free |
| Update frequency | Weekly | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone | iPhone |
| Requires iOS | 26.1 | 26.1 |
| Further details — not scored | ||
| Size | 19 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Joao Paulo Ferreira da Luz | Ismail Galdi |
In-app purchases
Shift Alarm
No in-app purchases
FlexAlarm
No in-app purchases








