Do Homework vs Instrument Classification
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Do Homework
Edit PDFs and images directly, saving changes to new files without altering originals. Merge documents, work with cloud storage, and use a scratchpad for notes. Share files and chat with friends.
- Edit PDFs and images directly
- Save edits to new files
- Merge PDFs and images
- Work with Google Drive
- Cloud file sharing
- Scratchpad for notes
- Draw lines and circles
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Do homework on PDF and images directly 1. Save to separate file, without changing original, continuously editable. 2. Merge to new PDF or images. 3. Work on Google Drive directly. 4. Http transfer files to local. 5. Scratch papper. 6. Local folder structure. 7. Draw line and circle. 8. Cloud share files. 9. Chat with friends.
Instrument Classification
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Classifying instruments by sound #Plucked string #Brass #Wind #Bowed string #Rattle #instruments
Screenshots
Verdict
The clearest difference is in-app purchases: Instrument Classification at none against Do Homework's 1. Do Homework's advantage is ads (none vs shown) and iOS requirement (11.0 vs 15.8.3). On price, update cadence 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. Do Homework sells 1 one-off in-app purchase. Instrument Classification asks for nothing beyond the download.
Do Homework ships an update fortnightly, Instrument Classification every 2 weeks. The most recent releases landed on October 5, 2026 and September 24, 2026 respectively.
| Parameter | Do Homework | Instrument Classification |
|---|---|---|
| Price | Free | Free |
| Rating | 2.3 (3 ratings) — better | — |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Fortnightly | Every 2 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 11.0 — better | 15.8.3 |
| Further details — not scored | ||
| Size | 96 MB | 43 MB |
| Age rating | 4+ | 4+ |
| Developer | Heavenbrook Software Inc. | Hideaki Uchikoshi |
In-app purchases
Do Homework
- Do homework upgrade$1.99
Instrument Classification
No in-app purchases
Questions
Is Do Homework free?
Is Instrument Classification free?
Do Do Homework or Instrument Classification have ads?
Which is updated more often, Do Homework or Instrument Classification?
Other comparisons
