Comparison

Sleep Defender vs MKV PiP Player

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

Head to head
About

Sleep Defender

This app helps parents manage wake-up times for young children using a visual, silent alarm system. It employs a stoplight color code (red, yellow, green) to indicate when it's okay to get out of bed, ensuring quiet mornings and better sleep for the whole family.

Highlights
  • Silent stoplight alarm system
  • Color-coded wake-up indicators
  • Large, easy-to-read clock numbers
  • Simple one-screen setup
  • Adjustable brightness controls
  • Silent timer for timeouts
Features
Read full description

Defend Your Sleep! Any parent with a young child knows how difficult it can be to get a good night’s sleep. Your child can come in at any time and wake you up asking if it’s time to get up. Now there’s a remedy — Sleep Defender. Sleep Defender uses the colors of the stoplight to silently indicate when it’s ok to get up. Red, stay in bed. Green, get up. Optional yellow, it’s ok to be up, but quiet. A great feature of Sleep Defender is that it doesn’t make a sound, so it will never wake a sleeping child. Sleep Defender sizes the clock numbers to fit the device screen, so that they are BIG, and can easily be seen from across the room. Sleep Defender is easy to use — ideal for use in a dark room when you’re tired. Set the alarms on one screen with just a few touches. Adjust the clock brightness quickly on the clock face. Tap alarm indicators to recall alarm times. Sleep Defender was developed out of necessity. It worked with my children and I am confident it will work with yours. Get that good night’s sleep you deserve. Sleep Defender is a tremendous help for timeouts and can be used as a silent timer. It’s also ideal for those with special needs that are unable to tell time. If you leave the iOS device on all night, a charger is probably a good idea. Questions or comments: support@accthree.com Features: - big clock numbers can be seen from across the room - only kids’ alarm clock with separate yellow alarm - simple one screen setup - silent so it won’t wake a sleeping child - easy brightness controls - alarm indicators that show alarm times when tapped - clock face can be numbers or a stoplight - tutorial page to make sure alarms are setup properly - clock automatically returns to red 2 hours after alarm - clock resets to red at midnight

About

MKV PiP Player

Play any video file with picture-in-picture functionality. Supports a wide range of video and subtitle formats, playlist files, and casting to DLNA TVs. Offers playback speed control and multi-track audio/subtitle options.

Highlights
  • Picture-in-Picture playback
  • Supports numerous video formats (MKV, MP4, AVI, etc.)
  • Supports multiple subtitle formats (ASS, SRT, VTT, etc.)
  • M3U playlist support
  • DLNA TV casting
  • Playback speed control
  • Multi-track audio and subtitles
Features
Read full description

MKV PiP Player is a video player that Lets you play any videos picture-in-picture. - Supports video files : MKV, MP4, AVI, M4V, MOV, 3GP, TS, MTS, M2TS, WMV, FLV, F4V, ASF, WEBM, RM, RMVB, QT, DV, MPG, MPEG, MXF, VOB, GIF, OGV, OGM etc. - Supports subtitle files : ASS, SRT, SMI, SSA, IDX, SUB, SUP, VTT, SCC, MKS, JSS, JS, AQT, RT, UFT, UTF8, UTF-8 etc. - Supports playlist files : M3U - Supports Cast Web Videos to DLNA TV - Supports Browser, SMB, WebDAV, AList - Playback speed control : 0.25x ~ 4.0x - Supports multi-track audio - Supports embedded subtitles - Supports multi-track subtitles - Supports user’s selection of subtitle files - Supports recently played list - Supports Safari extension Disclaimer:MKV PiP Player does not provide any M3U playlists, users must use their own playlists containing legal content.

Screenshots

Sleep Defender4 screens
MKV PiP Player4 screens

Verdict

The call

The clearest difference is in-app purchases: Sleep Defender at none against MKV PiP Player's 1. Sleep Defender also leads on iOS requirement (8.0 vs 15.0). MKV PiP Player's advantage is review sentiment (94% vs 60%) and update cadence (every 9 days vs every 22 months). On price, ads, monetization model 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

CostPrice · In-app purchases · Ads · Monetization

Sleep Defender costs $0.99 and MKV PiP Player $0.99 up front. MKV PiP Player sells 1 one-off in-app purchase. Sleep Defender asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

MKV PiP Player holds the better App Store score, 4.7 against 4.4. That said, the two scores are not equally well evidenced: MKV PiP Player has 68 ratings behind it against 10, so its average is the more settled of the two. Written reviews point the same way: 60% of Sleep Defender's written reviews are positive against 94% of MKV PiP Player's.

UpkeepUpdate frequency

Sleep Defender ships an update every 22 months, MKV PiP Player every 9 days. The most recent releases landed on October 19, 2026 and October 30, 2026 respectively.

Scorecard6 real differences · 4 level
Sleep Defender versus MKV PiP Player: the parameters behind the verdict, then further details
ParameterSleep DefenderMKV PiP Player
Price$0.99$0.99
Rating4.4 (10 ratings)4.7 (68 ratings) — better
Positive reviews60.0% of reviews94.0% of reviews — better
Number of ratings1068 — better
Update frequencyEvery 22 monthsEvery 9 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS8.0 — better15.0
Further details — not scored
Size2 MB46 MB
Age rating4+17+
DeveloperAndrew Czupik北京伊码网络科技有限公司

Customer experience

Sleep Defender

All ratings10 ratings
Positive80.0%
Neutral20.0%
Negative0.0%
Written reviews5 reviews
Positive60.0%
Neutral40.0%
Negative0.0%

MKV PiP Player

All ratings68 ratings
Positive95.6%
Neutral0.0%
Negative4.4%
Written reviews67 reviews
Positive94.0%
Neutral3.0%
Negative3.0%

Bugs and requests

Sleep Defender

Not enough reviews yet to summarise bugs or requests.

MKV PiP Player

Reported bugs

14 issues
  • HD clarity cannot load
  • DLNA cast to TV has no response
  • Glitchy at times
  • Frequent crashes, especially when initiating PiP
  • M3U parsing needs to be faster and search needs to be smoother
Show 9 more
  • Latest picture-in-picture fast forward/backward not working normally
  • Freezes every few minutes, requires pause/play to resume
  • External subtitles not working
  • Crashes when clicking recent playback history
  • Picture-in-picture playback crashes after about 10 seconds
  • Default to landscape, cannot adjust
  • File list automatically switches to date sorting upon reopening, causing disorder
  • Cannot select files from external USB drive
  • Cannot delete Alibaba Cloud Drive resources directly from the app

Requested features

41 requests
  • Add option to close transition animations
  • Add vertical screen viewing function
  • Support for Emby
  • Add function to import video sources
  • Support for ATV
Show 36 more
  • Add pause/play with Airpod controls
  • Allow listening to videos when phone is powered off (without PiP)
  • Faster M3U parsing and smoother search
  • Ability to display M3U contents in a list
  • Ability to disable subtitles
  • Add function to import letters
  • Add function to import video sources or provide jump interface
  • Support for ATV
  • Add VOD URL function
  • Add option to disable recent playback
  • Add network movie posters and library
  • Add background playback (not PiP)
  • Add auto-play next episode
  • Add grid layout
  • Add background playback function
  • Add option for automatic horizontal screen
  • Add drag-and-drop sorting for playback list
  • Support for ATV
  • Add side-screen and vertical screen viewing options
  • Add Apple TV support
  • Add DLNA screen casting
  • Allow screen-off playback for music
  • Develop TV version
  • Add cache function for large files
  • Add screen casting function
  • Add delete function for Alibaba Cloud Drive resources
  • Add timer playback function
  • Add screen lock function
  • Display only one history record for the same folder
  • Sync playback history data with Alibaba Cloud
  • Add dark mode
  • Add audiobook function
  • Add cloud synchronization function across devices
  • Allow lock screen playback and co-playback with other audio
  • Add more detailed long-press speed options (e.g., 2.5x)
  • Support downloading videos from the browser

In-app purchases

None

Sleep Defender

No in-app purchases

1 purchases

MKV PiP Player

One-time1
  • MKV PiP Player Pro$1.99

Questions

Is Sleep Defender free?
Sleep Defender costs $0.99, with no in-app purchases.
Is MKV PiP Player free?
MKV PiP Player costs $0.99, and also offers in-app purchases.
Which has better reviews, Sleep Defender or MKV PiP Player?
MKV PiP Player is rated higher. Sleep Defender averages 4.4 out of 5 from 10 ratings, while MKV PiP Player averages 4.7 from 68 ratings.
Do Sleep Defender or MKV PiP Player have ads?
Neither Sleep Defender nor MKV PiP Player shows ads.
Which is updated more often, Sleep Defender or MKV PiP Player?
Sleep Defender ships an update every 22 months, and MKV PiP Player every 9 days. Most recently, Sleep Defender was updated on October 19, 2026 and MKV PiP Player on October 30, 2026.

Other comparisons