Karaoke Sync vs Simple Piano CAEN
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Karaoke Sync
Transform any song into a karaoke experience with synced lyrics and YouTube videos. Create custom karaoke tracks from audio or videos, test your music knowledge with AI quizzes, and record yourself singing with various voice effects. Export your creations in multiple formats.
- Thousands of synced karaoke songs
- Create custom karaoke tracks
- AI-powered song quizzes
- Real-time voice effects
- Record audio and video
- Lyric timing and editing
- Multiple export formats
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Karaoke Sync turns your phone into a karaoke lyric maker. Import a song, paste the lyrics, and tap along to time each line. Then sing, record, or export your timed lyrics. Want to sing right away? The Karaoke tab has thousands of songs with synced lyrics, ready to go. MAKE KARAOKE LYRICS FOR ANY SONG • Import an audio file (MP3, M4A, WAV, FLAC, AAC), a video from Photos or Files (MP4, MOV, M4V), or a YouTube link • Paste the lyrics, or paste timed LRC lyrics and keep their timing • Add a translation under each line • Tap once as each line starts • Fine-tune any line in 0.1-second steps, with preview, loop and half speed • Shift a whole section at once when the song drifts WORD-BY-WORD TIMING • Switch to Words and each line's words are placed on a timeline for you • Drag the ones that are off, zoom in for fast passages, undo any move • Copy Timing applies one line's word timing to every line with the same words • Split words into syllables, mark lines for two singers, and let lines overlap • Lyrics highlight one word at a time as you sing EXPORT YOUR TIMED LYRICS • LRC and Enhanced LRC (word-level) • SRT subtitles • CSV • Smule format: lyrics wrapped to fit Smule's lyrics editor, with timestamps as a guide. Timing is set again in Smule. Files open the share sheet: save to Files, AirDrop, or send to another app. SING AND RECORD • Record your voice over the music, or film yourself with the front camera • Hear yourself live through wired headphones • Adjust voice level and voice sync after recording • Export an M4A mix of your voice and the music, or your voice on its own LYRIC VIDEOS • Make an MP4 video of the song or a recorded take, with 1, 2 or 4 lyric lines on screen • Choose the font, size, color and animation, and add a background behind the lyrics • Karaoke animation fills in each word as it is sung, on word-timed lines VOICE EFFECTS Six effects for your recordings, each unlocked with 100 tokens earned in the app. PRACTICE MODE Rehearse without recording. Tap any line to jump to that part of the song. KARAOKE MODE • Thousands of songs with synced lyrics and YouTube videos • Search by artist or song • Filter by Vocals or Karaoke (instrumental) versions • Save favorites and request songs GAMES, QUIZZES AND FACTS • Finish the Lyric and Lyric Order with your projects or thousands of songs • AI song quizzes at Easy, Medium and Hard, plus song facts • The Play tab's songs are not available in every region TOKENS Earn tokens from a daily streak, new projects, exports, games, quizzes, song requests and short ads. Spend them on karaoke songs, extra song unlocks, bonus exports and voice effects. GOOD TO KNOW • Karaoke Sync does not remove vocals. For a backing track, import an instrumental version or pick a Karaoke version in the catalog. • Timing is done by hand, one tap per line. The app does not listen to the song to place lyrics. • Recordings made over a YouTube video contain only your voice, because YouTube sound is never captured. • Only import songs and videos you have the right to use. PRIVACY Your projects, imported audio and video, and recordings stay on your device and are never uploaded. No account needed. The app goes online for the karaoke and quiz catalogs, synced lyrics, YouTube videos, ads, purchases, and usage and crash statistics. FREE AND PRO Free: up to 10 projects, every export format, and 10 exports without ads. After that, each export takes a short ad or 25 tokens. Karaoke songs unlock with a short ad or 2 tokens. 10 song unlocks a month in the Play tab. Includes ads. Pro ($0.99 a month or $5.99 a year in the US): no ads, unlimited projects and exports, 100 song unlocks a month in the Play tab, and karaoke songs for 1 token. Smule is a trademark of Smule, Inc. Karaoke Sync is not affiliated with, sponsored by, or endorsed by Smule. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Simple Piano CAEN
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Open the app and start playing immediately. Simple Piano CAEN is a focused, one-time-purchase piano keyboard with no setup, lessons, or account required. Tap the keys to play, drag horizontally to move through the note range, or use the range bar to jump quickly. Pinch the range bar to resize the keys. Multitouch lets you play chords naturally. Features: • Wide, horizontally scrollable note range • Range bar for quick movement • Adjustable key size • Piano tone powered by the included SoundFont • Gentle note release and reverb • Per-key haptic feedback • Multitouch chord playing • No ads, accounts, subscriptions, or in-app purchases Buy once and use every feature. It is made for quick practice, checking a melody, or playing a few notes without extra menus. Support: https://apps.caen.co.jp/en/simplepiano/support/
Screenshots
Verdict
The clearest difference is price: Karaoke Sync at Free against Simple Piano CAEN's $0.99. Karaoke Sync also leads on update cadence (every 4 days vs monthly). Simple Piano CAEN's advantage is in-app purchases (none vs 2) and ads (none vs shown). On device support 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
Karaoke Sync is free to download; Simple Piano CAEN costs $0.99 up front. Karaoke Sync sells 2 in-app purchases, starting at $0.99 per month. Simple Piano CAEN asks for nothing beyond the download.
Karaoke Sync ships an update every 4 days, Simple Piano CAEN monthly. The most recent releases landed on November 9, 2026 and November 10, 2026 respectively.
| Parameter | Karaoke Sync | Simple Piano CAEN |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 4.7 (10 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 10 — better | — |
| Update frequency | Every 4 days — better | Monthly |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 17.0 | 17.0 |
| Further details — not scored | ||
| Size | 18 MB | 55 MB |
| Age rating | 12+ | 4+ |
| Developer | Olivia Renee Studio, LLC | CAEN Co., Ltd. |
In-app purchases
Karaoke Sync
- Pro Monthly$0.991 Month
- Pro Yearly$5.991 Year
Simple Piano CAEN
No in-app purchases
Questions
Is Karaoke Sync free?
Is Simple Piano CAEN free?
Do Karaoke Sync or Simple Piano CAEN have ads?
Which is updated more often, Karaoke Sync or Simple Piano CAEN?
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