![](https://play-lh.googleusercontent.com/a-/ALV-UjVx-Gi1obOI5qJR6bmsba_P_pToB-8UruJ6iR94iEDYYsqhH_EC=s32)
Josiah L
A huge problem in the sleep tracking app space is apps do not provide a clear list of which features are freemium and which are pay-for. Sleepwave is no different. Most of the important features, such as trends, cost $2-$6 a month. They provide a list of features when you go to make the purchase. In terms of the app itself, it has less features than many others, but a unique interface. Sleep Tracker by Leap Fitness and Sleep Calculator are the best free apps I've found.
1 person found this review helpful
![](https://play-lh.googleusercontent.com/a-/ALV-UjWbxAHhD_RIaCXkbu0QYTdJjOLh2MMbmRknkU1QVZFyneQJFeUk=s32)
christina demello
First, I don't like the fact that the volume has to be so high in order for this app to work properly. I have to listen to something while I sleep, but the volume being at 30% is too loud for me to fall asleep properly. 2nd and less importantly, is the fact that battery optimization needs to be turned off at all. No. These two issues are the exact reason I'm uninstalling this app. If you find a way to make it work without such a loud problem then I might try it again but unil then, goodbye.
2 people found this review helpful
Reviva Softworks Ltd
17 April 2024
Hi Christina, Sleepwave's patented technology requires access to the device microphone and speakers to track your sleep and wake you up at a great moment. If you're hearing the frequency tone, please use “Sound check” in the Profile menu to find the right frequency for you. Please email support@sleepwave.com for any further assistance.
![](https://play-lh.googleusercontent.com/a-/ALV-UjUqiclIOHocFcHDrt7hvjXWyXm8QZbSmKUPHXqH2b4WoTdkt6NM=s32)
Syberyah
It uses a sonar system sending out noises imperceptible to humans to listen for it coming back, but by sister could hear it and had to sleep in the other room, so I can't use this app. It has a few options for the wakeup window (15 min, 30, etc) but doesn't have a 20 or 25 min range which is what I want. It has few songs and customization options that don't require a subscription, along with the analytics and data. I didn't get a chance to see it work tho bc I woke up 10 mins before my alarm.
1 person found this review helpful
Reviva Softworks Ltd
12 June 2024
Hi there, the frequency we use for motion tracking is silent to most adults, but a small number of people can hear it. In this case, you can use the “Sound Check” feature in the Profile menu to find the right frequency for you. Please email support@sleepwave.com for further assistance.