キャラーム vs ボイボTTS
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
キャラーム
This alarm clock app helps students and working individuals wake up with personalized character wake-up calls. Enjoy a pleasant awakening with your favorite character's voice to start your day positively.
- Character wake-up calls
- Personalized character voices
- Helps difficult mornings
- Suitable for students and workers
- Positive start to the day
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Charalarm is an alarm clock app for working people and students who have a hard time getting up in the morning. It's okay to get up in the morning, let's have your favorite character make a wake-up call! !! If you can wake up with a nice voice character, you will surely be a good awakening, so let's do our best for the day! !! Privacy Policy: https://charalarm.com/docs/privacy/ Terms of Use: https://charalarm.com/docs/teams/
ボイボTTS
This app uses on-device voice synthesis to read text aloud with a wide selection of voices. Save and share generated audio files, and set alarms to have text read at specific times. It also includes a song feature with a MIDI editor.
- On-device voice synthesis
- 127 voice options
- Save and share audio
- Alarm functionality
- Song feature with MIDI editor
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VOICEVOXの声でテキストを読み上げます。 - 音声合成をオンデバイスで行うため、サーバとの通信を必要とせず、プライバシーが守られます。 - 声は100種類以上から選択できます。 - 生成した音声ファイルを保存して、好きな時に再生・共有することができます。 - アラームで指定した時間に声を読み上げます。 - ソング機能 (MIDIエディター搭載) ※音声合成にかかる時間は、端末の性能や文章量に依存し、数秒から数十秒かかります。 ※作成された音声を利用する際は、各音声ライブラリの規約に従ってください。 - 利用規約: https://shinagawa.app/voicevox-tts/terms-and-conditions/ - プライバシーポリシー: https://shinagawa.app/voicevox-tts/privacy-policy/
Screenshots
Verdict
The clearest difference is rating: ボイボTTS at 5.0 against キャラーム's 4.4. ボイボTTS also leads on update cadence (every 3 weeks vs every 2 months) and iOS requirement (16.0 vs 18.0). キャラーム's advantage is review sentiment (45% vs 33%) and ratings volume (9 vs 1). On price, ads, in-app purchases and monetization model 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. キャラーム sells 1 in-app purchase, starting at $1.99 per month and ボイボTTS sells 1 in-app purchase, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.
ボイボTTS holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: キャラーム has 9 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 45% of キャラーム's written reviews are positive against 33% of ボイボTTS's, so the app with the better star average is not the one people write more warmly about.
キャラーム ships an update every 2 months, ボイボTTS every 3 weeks. The most recent releases landed on June 11, 2026 and September 10, 2026 respectively.
| Parameter | キャラーム | ボイボTTS |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (9 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 45.5% of reviews — better | 33.3% of reviews |
| Number of ratings | 9 — better | 1 |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | Yes | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 18.0 | 16.0 — better |
| Further details — not scored | ||
| Size | 38 MB | 120 MB |
| Age rating | 9+ | 17+ |
| Developer | junpei ono | Kazuhiro.Yamada |
Customer experience
キャラーム
ボイボTTS
In-app purchases
キャラーム
- Charalarm Premium$1.991 Month
ボイボTTS
- premium (monthly)$2.991 Month
