Comparison

FlexiAlarm vs Slumba

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

Head to head
About

FlexiAlarm

This app offers intelligent wake-up features for Apple Watch and flexible alarm scheduling for iPhone. Customize wake windows, vibration sensitivity, and alarm repetition to fit your routine. It also provides sleep statistics and calendar event alarms.

Highlights
  • Intelligent Smart Wake on Apple Watch
  • Flexible alarm schedules on iPhone
  • Customizable wake window sensitivity
  • Calendar event alarms
  • Sleep statistics and insights (requires Apple Watch)
  • Power Nap Mode
  • Lucid Dream Alarm Mode
Features
Read full description

Smart Wake on Apple Watch. Flexible Alarms on iPhone. Wake more gently with intelligent Smart Wake on Apple Watch, or build flexible alarm schedules on iPhone. FlexiAlarm gives you control over how—and when—you wake. Smart Wake responds to signs that you’re waking within your chosen wake window, aiming for a gentler start. Adjust its sensitivity, wrist vibrations and snooze to suit you. No Apple Watch? No problem. Use iPhone alarms for shift work, changing rosters and everyday routines. Choose weekdays, repeat every few weeks or select specific dates, then skip or move one alarm when plans change. Smart Wake and sleep statistics require an Apple Watch. Scheduled iPhone alarms, Calendar alarms and timers work without one. One-time purchase. No subscription. IPHONE ALARMS THAT FIT YOUR LIFE • Flexible schedules Set fixed times for your working days, repeat every few weeks or choose individual dates. • Change one alarm, keep your schedule Skip or move a single occurrence without changing the rest. Review upcoming alarms and undo future skips or moves. • Templates, routines and timer sets Save fixed times in a template, build a routine around one start time, or run a sequence of countdowns. Keep different setups ready for workdays, days off and breaks. • Calendar event alarms Choose an event and how early its alarm should ring, or enable automatic event alarms for selected calendars. Your calendar stays unchanged. • Sounds and gentle fade-in Choose a sound, preview its softer fade-in and set separate default sounds for regular and Calendar alarms. Allow Alarms so your iPhone can ring through Silent Mode and Focus. SMART WAKE ON APPLE WATCH • Intelligent wake timing Set your latest wake-up time and choose a window. Smart Wake looks for signs that you’re waking within it instead of relying only on a fixed time. • Adjustable sensitivity and wrist vibrations Fine-tune how readily Smart Wake responds. Choose vibration strength, repeat intervals, increasing vibration and snooze length. • Power Nap Mode Set a dedicated alarm for a quick rest. • Lucid Dream Alarm Mode Automatically stop the alarm after a chosen duration for techniques such as CAN-WILD or DEILD. SLEEP REPORTS AND INSIGHTS Explore sleep recorded by your Apple Watch in Apple Health, including sleep stages, quality insights, history and trends. Keep useful information close with widgets and Watch complications. These sleep features require Apple Watch sleep data. MADE FOR IPHONE DUO Keep alarms and Calendar side by side on the open display, with layouts that adapt when you fold or rotate. Use bedside mode for a dimmable clock, next alarm and countdown, with separate iPhone and Watch status. TWO SYSTEMS, YOUR CHOICE Use iPhone alarms, Watch alarms or both. iPhone alarms follow saved schedules. Watch alarms must be armed manually in FlexiAlarm on your Watch before each sleep and do not repeat automatically. Starting, skipping or stopping one system does not control the other. Prefer your phone? iPhone-only mode focuses on alarms, Library and Calendar, with Watch and sleep features hidden. No account required. Your sleep data stays on your devices. Wake up your way, whatever your schedule. Privacy Policy: https://sites.google.com/view/mildtrainerprivacypolicy/home Terms: https://sites.google.com/view/flexialarmterms/home

About

Slumba

Craft personalized soundscapes to aid sleep with an intuitive mixer. Choose from various nature and noise themes, set sleep timers, and control playback via Apple Watch or home screen widgets. Integrates with Sleep Focus for automated bedtime routines.

Highlights
  • Intuitive soundscape mixer
  • Five handcrafted soundscapes
  • Customizable sleep timers
  • Apple Watch app control
  • Home screen widgets
  • Sleep Focus integration
  • Siri voice commands
Features
Read full description

Sleep shouldn't be complicated. Slumba gives you a beautiful, handcrafted soundscape — and lets you blend it exactly the way you want. THE MIXER Most sleep apps give you a volume slider. Slumba gives you something more intuitive. Each soundscape layers three sounds together, and you blend them by dragging a single glowing point across a soft triangle. Ease it toward rain and the storm deepens. Nudge it to the center and everything balances. Find what feels right tonight, set your phone down, and let it carry you off. FIVE SOUNDSCAPES Noise — White, Pink & Brown Noise Storm — Rain, Wind & Thunder Ocean — Waves, Breeze & Gurgle Creek — Stream, Rustle & Birds Campfire — Fire, Night Air & Crickets Noise is always free. Try the rest free for 5 minutes — one small purchase unlocks everything. Forever. SLEEP TIMER Set a timer for 15, 30, 45, 60, or 120 minutes and Slumba fades your sounds gently to silence. No sudden cutoffs. Just a slow, peaceful fade — and then sleep. YOUR PHONE CAN STAY FACE-DOWN Once you're in bed, you shouldn't need to touch your phone. Slumba makes that easy. The Apple Watch app lets you start a soundscape, switch presets, and set a timer from your wrist. The Lock Screen widget shows your timer counting down without unlocking. Add the toggle to Control Center and starting Slumba becomes a single tap before you set your phone down for the night. On iPhone 14 and later, the Live Activity keeps your timer visible in the Dynamic Island while you do your bedtime routine. ON YOUR HOME SCREEN The small home screen widget shows what's playing at a glance. The medium widget goes further — when nothing is playing, it shows all five soundscapes as soft buttons you can tap to start one directly, without opening the app. SLUMBA KNOWS WHEN IT'S BEDTIME Connect Slumba to your Sleep Focus and it can start your chosen soundscape automatically when your bedtime routine begins — without you having to remember. Ask Siri to play a specific soundscape, or set a timer hands-free. "Play Ocean on Slumba." That's all it takes. BUILT FOR SLEEP No accounts. No subscriptions. No ads. No tracking. Just sounds that help you sleep. APPLE WATCH The best thing about the Apple Watch app is what it saves you from doing — reaching for your phone when you're already comfortable. From your wrist you can start any soundscape, switch between Noise, Storm, Ocean, Creek, and Campfire, and set a sleep timer for exactly as long as you need. The countdown rests softly on screen. When the time comes, Slumba fades out on its own. Your phone can stay face-down. The room can stay dark. You don't have to move.

Screenshots

FlexiAlarm4 screens
Slumba4 screens

Verdict

The call

The clearest difference is price: Slumba at Free against FlexiAlarm's $5.99. Slumba also leads on review sentiment (100% vs 75%) and device support (4 vs 2). FlexiAlarm's advantage is in-app purchases (none vs 1) and chart position (#38 vs unranked). On rating, ratings volume, ads 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

Slumba is free to download; FlexiAlarm costs $5.99 up front. Slumba sells 1 one-off in-app purchase. FlexiAlarm asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for FlexiAlarm against 5.0 for Slumba. Both are backed by a comparable volume of ratings — 3 and 7 respectively. Written reviews are what separate them: 75% of FlexiAlarm's written reviews are positive against 100% of Slumba's.

Scorecard6 real differences · 5 level
FlexiAlarm versus Slumba: the parameters behind the verdict, then further details
ParameterFlexiAlarmSlumba
Price$5.99Free — better
Rating5.0 (3 ratings)5.0 (7 ratings)
Positive reviews75.0% of reviews100.0% of reviews — better
Number of ratings37 — better
Update frequencyEvery 5 days—
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
Best chart rank#38 — better—
DevicesiPhone, Apple WatchiPhone, iPad, Mac, Apple Watch — better
Requires iOS26.226.2
Further details — not scored
Size37 MB39 MB
Age rating4+4+
DeveloperNathan WoolmoreIan Goudie

Customer experience

FlexiAlarm

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive75.0%
Neutral0.0%
Negative25.0%

Slumba

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

FlexiAlarm

No in-app purchases

1 purchases

Slumba

One-time1
  • Unlock All Presets$2.99

Questions

Is FlexiAlarm free?
FlexiAlarm costs $5.99, with no in-app purchases.
Is Slumba free?
Slumba is free to download, with in-app purchases available.
Which has better reviews, FlexiAlarm or Slumba?
FlexiAlarm and Slumba are both rated 5.0 out of 5 on the App Store, from 3 and 7 ratings respectively.
Do FlexiAlarm or Slumba have ads?
Neither FlexiAlarm nor Slumba shows ads.

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