Chart Builder Graph Maker vs DIY Units Conversion
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Chart Builder Graph Maker
Easily create professional line, bar, and pie charts. Visualize your data with intuitive tools and share your creations.
- Create line charts
- Create bar charts
- Create pie charts
- Intuitive design tools
- Data visualization
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This app allows you to create line charts, bar charts, and pie charts.
DIY Units Conversion
Create your own personalized unit conversion library by adding, removing, and reordering conversions. Tailor the app to your specific needs, focusing on the units you use most frequently.
- Customizable conversion library
- Add, remove, and reorder units
- Supports various scientific fields
- User-defined conversion sets
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There are so many unit conversions in life, such as International System, Imperial System, Engineering, Heat, Fluids, Light, Electricity, Magnetism, Radiology, Biology, Chemistry, etc. However, we normally only need a subset of these conversions. With this simple app, you can add, remove, and rearrange the order of your own set of unit conversions. Do It Yourself (DIY), you can build your customized unit conversion library.
Screenshots
Verdict
The clearest difference is rating: DIY Units Conversion at 5.0 against Chart Builder Graph Maker's 4.4. DIY Units Conversion also leads on review sentiment (100% vs 62%) and ads (none vs shown). Chart Builder Graph Maker's advantage is update cadence (every 2 days vs every 25 months) and ratings volume (127 vs 1). On price, in-app purchases, 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. Neither carries in-app purchases, so what you see is what you pay.
DIY Units Conversion holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Chart Builder Graph Maker has 127 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 62% of Chart Builder Graph Maker's written reviews are positive against 100% of DIY Units Conversion's.
Chart Builder Graph Maker ships an update every 2 days, DIY Units Conversion every 25 months. The most recent releases landed on October 8, 2026 and September 8, 2026 respectively.
| Parameter | Chart Builder Graph Maker | DIY Units Conversion |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (127 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 61.5% of reviews | 100.0% of reviews — better |
| Number of ratings | 127 — better | 1 |
| Update frequency | Every 2 days — better | Every 25 months |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 12.0 | 12.0 |
| Further details — not scored | ||
| Size | 34 MB | 31 MB |
| Age rating | 4+ | 4+ |
| Developer | Keitaro Ohno | DingXin Cheng |
Customer experience
Chart Builder Graph Maker
DIY Units Conversion
In-app purchases
Chart Builder Graph Maker
No in-app purchases
DIY Units Conversion
No in-app purchases
Questions
Is Chart Builder Graph Maker free?
Is DIY Units Conversion free?
Which has better reviews, Chart Builder Graph Maker or DIY Units Conversion?
Do Chart Builder Graph Maker or DIY Units Conversion have ads?
Which is updated more often, Chart Builder Graph Maker or DIY Units Conversion?
Other comparisons
