AmbientWave vs FlowCAL
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
AmbientWave
Create personalized ambient soundscapes for focus, relaxation, or sleep. Mix various environmental sounds like rain, wind, and ocean with individual volume controls for a seamless listening experience.
- Mix multiple ambient sounds
- Continuous loop playback
- Individual sound volume control
- Unlockable sound variations (Pro)
- White/Pink/Brown noise (Pro)
- Sleep timer (Pro)
Read full descriptionHide full description
AmbientWave is a completely free app to generate continuous loops of soothing ambient sounds for focus, relaxation, sleep. Layer rain, wind, ocean, fire, nature, and city ambiance to create your perfect continuous background. Free features: - Mix multiple environments at once - Smooth playback designed for long listening sessions - Individual volume controls per sound AmbientWave Pro (one-time purchase): - Unlock all sound variations - Unlock White / Pink / Brown noise - Unlock Sleep Timer
FlowCAL
Read full descriptionHide full description
Open FlowCAL in the morning to see your schedule for the day—and the time between events—at a glance. FlowCAL displays events from the calendars on your iPhone or iPad in a vertical timeline. Instead of checking each event separately, you can see how your day flows from one commitment to the next. It is useful whether a colleague, assistant, or AI adds events to a shared calendar, or you manage your schedule yourself. SEE YOUR DAY AND YOUR FREE TIME Events appear at their scheduled times, with free time shown between them. You can quickly see how long you have before your next appointment and whether there is time to travel or prepare. A line marking the current time shows where you are in your day. Tap an event to see its category, location, notes, and other details. KEEP USING YOUR EXISTING CALENDARS FlowCAL reads events from calendars available on your device. This includes Apple calendars and Google calendars that have been added to your device and synced with iOS. You can choose which calendars to display. FlowCAL does not add, edit, or delete events in those calendars. Continue managing shared and work events in the calendar you already use. ADD EVENTS JUST FOR YOURSELF You can add, edit, and delete private events within FlowCAL. These events are not added to Apple or Google Calendar and do not appear on shared calendars. If you choose to enable iCloud sync, private events can be saved to your own iCloud and synced between your iPhone and iPad when they use the same Apple Account. Sync is optional and can be controlled in Settings. GET DIRECTIONS AND OPEN LINKS If an event includes a station, business name, or other location, you can open directions in Maps. Tap a web address in an event’s notes to open it using your device’s usual app or default browser. YOUR DATA FlowCAL reads calendar events only after you grant access. The developer does not collect, store, or analyze your calendar data, and FlowCAL does not send it to a developer-operated server. Private events you add in FlowCAL are stored on your device. They are also stored in your own iCloud only if you enable iCloud sync. Events from Apple and Google calendars remain managed by their respective calendar services. FlowCAL is free to use.
Screenshots
Verdict
The clearest difference is iOS requirement: AmbientWave at 15.0 against FlowCAL's 18.6. On price, update cadence, 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.
AmbientWave ships an update every 5 days, FlowCAL every 3 days. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.
| Parameter | AmbientWave | FlowCAL |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (5 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 5 — better | — |
| Update frequency | Every 5 days | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Freemium | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 18.6 |
| Further details — not scored | ||
| Size | 285 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Paul Crowley | GEN WATANABE |
In-app purchases
AmbientWave
No in-app purchases
FlowCAL
No in-app purchases









