Twelve vs APTuner
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Twelve
A professional vocal and instrument tuning application. It offers interfaces for various instruments and supports tuner and sound modes with fine-tuning capabilities.
- Vocal tuning
- Instrument tuning (guitar, violin, bass, ukulele, erhu)
- Tuner mode
- Sound mode
- A4 frequency fine-tuning
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This is a professional vocal tuning software, contains the most commonly used twelve-tone, as well as guitar, violin, bass, Ukulele and erhu instrument tuning interface, supports for tuner and sound two working modes, supports A4 frequency fine-tuning. We welcome feedback to help us to improve our app.
APTuner
This application provides highly accurate chromatic tuning for a wide range of instruments. It features a clear interface, customizable settings, and the ability to detect note deviations with precision.
- Automatic note and cent deviation detection
- Accurate to 1/1000 semitone
- High contrast, high visibility UI
- Instrument presets
- User selectable noise threshold
- Settable A4 frequency
- Historical temperaments
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Features: + Automatically detects the note and cent deviation for a wide variety of instruments + Accurate up to 1/1000 semitone (0.1 cent) + High contrast, high visibility user interface + Instrument presets + User selectable noise threshold + Settable A4 frequency + Frequency table + Select and edit historical temperaments
Screenshots
Verdict
The clearest difference is ads: APTuner at none against Twelve's shown. APTuner also leads on monetization model (free vs ad-supported) and ratings volume (6 vs 1). On price, rating, review sentiment and update cadence 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.
On the App Store both sit at effectively the same score — 5.0 for Twelve against 5.0 for APTuner. That said, the two scores are not equally well evidenced: APTuner has 6 ratings behind it against 1, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.
Twelve ships an update every 5 months, APTuner every 3 months. The most recent releases landed on October 20, 2026 and October 1, 2026 respectively.
| Parameter | Twelve | APTuner |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (6 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 1 | 6 — better |
| Update frequency | Every 5 months | Every 3 months — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | Free — better |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Requires iOS | 26.0 | 15.6 — better |
| Further details — not scored | ||
| Size | 26 MB | 26 MB |
| Age rating | 4+ | 4+ |
| Developer | 小军 王 | Joseph Broms |
Customer experience
Twelve
APTuner
In-app purchases
Twelve
No in-app purchases
APTuner
No in-app purchases
