Compounds! vs Cello Coach
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Compounds!
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Learn to read and write Chinese characters in the order that makes the most sense. Compounds helps you master the most common simplified Chinese characters with a focused, research-backed learning path. Instead of throwing random characters at you, the app introduces them in an order designed to improve retention and reduce frustration, combining character frequency with structural relationships so new characters build naturally on ones you already know. Each study session is designed to help you: Learn high-value characters first Practice writing from memory Reinforce pronunciation and meaning Review at the right time so you remember more with less effort Compounds is built for learners who want a smarter way to study Chinese characters, whether you are starting from scratch or filling in gaps in your reading and writing. Why this order works: Compounds is inspired by research on efficient Chinese character learning strategies, especially work showing that character frequency and structural relationships can be combined to create a more effective progression. Optimal learning order based on: K. Zhao, D. Zhao, J. Yang, W. Ma and B. Yu, “Efficient Learning Strategy of Chinese Characters Based on Usage Frequency and Structural Relationship,” 2019 IEEE 4th International Conference on Big Data Analytics (ICBDA), Suzhou, China, 2019, pp. 351-355, doi: 10.1109/ICBDA.2019.8713245. Subscription A subscription is required for full access to all features. Terms of Service: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Cello Coach
This app provides a comprehensive series of beginner cello lessons designed for self-study at home. It covers fundamental techniques, essential skills, and offers tutorials for playing with piano accompaniment. Optimized for iPhone and iPad, it's ideal for aspiring cellists.
- Beginner cello course series
- Learn to play cello
- Play cello with piano
- Cello technique tutorials
- Essential cello skills
- Level up cello skills
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Beginner's Cello Lessons - Learn At Home By Self INCLUES: * Beginner Cello Course Series * Learn To Play Cello * Play Cello With Piano Series * Cello Technique Series * Basics Of Cello * Eeesntial Skills Of Cello * Level Up Skills Of Cello Optimized for iPhone and iPad, you can learn by yourself at home Get it now, enjoy the tour!
Screenshots
Verdict
The clearest difference is in-app purchases: Cello Coach at none against Compounds!'s 2. Compounds!'s advantage is ads (none vs shown) and update cadence (every 3 days vs every 28 months). On price, 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
Both are free to download. Compounds! sells 2 in-app purchases, starting at $14.99 per month. Cello Coach asks for nothing beyond the download.
Compounds! ships an update every 3 days, Cello Coach every 28 months. The most recent releases landed on September 27, 2026 and October 16, 2026 respectively.
| Parameter | Compounds! | Cello Coach |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.7 (270 ratings) — better |
| Positive reviews | — | 85.1% of reviews |
| Number of ratings | — | 270 — better |
| Update frequency | Every 3 days — better | Every 28 months |
| Ads | No — better | Yes |
| In-app purchases | Yes | No — better |
| Monetization | — | Ad-supported |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.4 | 15 — better |
| Further details — not scored | ||
| Size | 242 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Parotid | 叶 李 |
Bugs and requests
Compounds!
Not enough reviews yet to summarise bugs or requests.
Cello Coach
Reported bugs
4 issues- Pop-up ads that cannot be closed on app launch
- App becomes non-functional due to stuck ads
- Ads appearing before every video
- X button on ads not responding to user input
Requested features
4 requests- Tuner section for pitch accuracy
- Scales section for practice exercises
- Better organization and explanation of app sections
- Reduced or optional ad experience
In-app purchases
Compounds!
- Pro Monthly$14.991 Month
- Pro Yearly3 Days trial$49.991 Year
Cello Coach
No in-app purchases









