PPM系统 vs Tongue Drum
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PPM系统
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该app是针对孕妇提供的免费胎教音乐
Tongue Drum
This handpan learning tool uses a graphical interface to present musical notes, making the learning process more engaging and enjoyable. It offers a visual approach to mastering the instrument.
- Graphical note presentation
- Enjoyable learning experience
- Handpan instrument focus
- Visual learning approach
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This is a very interesting handpan learning tool that presents notes in graphical form, making learning more enjoyable.
Screenshots
Verdict
The clearest difference is in-app purchases: PPM系统 at none against Tongue Drum's 4. PPM系统 also leads on iOS requirement (13.0 vs 15.0). On price, update cadence, ads 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
Both are free to download. Tongue Drum sells 4 in-app purchases, starting at $4.99 per month. PPM系统 asks for nothing beyond the download.
PPM系统 ships an update every 9 days, Tongue Drum weekly. The most recent releases landed on October 14, 2026 and October 24, 2026 respectively.
| Parameter | PPM系统 | Tongue Drum |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (4 ratings) — better |
| Positive reviews | — | 66.7% of reviews |
| Number of ratings | — | 4 — better |
| Update frequency | Every 9 days | Weekly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 13.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 120 MB | 235 MB |
| Age rating | 4+ | 17+ |
| Developer | 飞虎 官 | 杭州点音教育科技有限公司 |
In-app purchases
PPM系统
No in-app purchases
Tongue Drum
- Month$4.991 Month
- 1个月$4.991 Month
- Quarter$12.993 Months
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- Year$39.991 Year
