Angle & Ratio vs KnowledgeBase Builder
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Angle & Ratio
Measure angles and ratios directly from images. Adjust segments on your photos to analyze proportions and inclinations, then save your results as JPEGs.
- Measure angles from images
- Measure ratios from images
- Adjustable segments for precise measurement
- Save results as JPEG
- Use photos from gallery or take new ones
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"Angle & Ratio" is a useful tool that you can measure the angle or ratio using a picture. You can create segments by moving the marks freely, so you can get the angle of arms or legs, or inclination of body. These segments are used to measure of ratio. Of course, you can save the result as a JPEG format. 【Usage】 1. Prepare a picture If you select a picture from gallery, you can adjust the size and position of the picture. Or when you take a picture, you will shoot the target in center of the view. 2. Measure of the angle Please move the marks at the position which you want to measure (the marks [1], [2], [3], [4] are in order from the top). The angle between two segments [1]-[2] and [3]-[4] is displayed on the top of screen. 3. Measure of the ratio Please move the marks at the position which you want to measure (the marks [1], [2], [3], [4] are in order from the top). The ratio of [1]-[2] to [2]-[3] and [3]-[4] is displayed under the angle ([1]-[2] is always 100).
KnowledgeBase Builder
Organize and search text documents and web pages with links within a mind map structure. Automatically create mind maps from text, import Wikipedia articles, and export your knowledge base as HTML. Also functions as a flowcharting tool.
- Save text documents and web pages
- Full-text search
- Organize with mind maps
- Automatic mind map creation
- Wikipedia import
- Export to HTML
- Flowcharting tool
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The InfoRapid KnowledgeBase Builder is an excellent tool for Knowledge Management. You can save text documents and web pages with all formattings and links in your knowledge base and perform a full text search in it. Since every document is attached as a text note to a mindmap item, you can organize them perfectly in a large mindmap. This mindmap is browsable, so you will never lose perspective even with thousands of documents. All items are stored in a reliable local SQLite database. The app includes many other outstanding features such as the automatic creation of mindmaps from text documents, the import of Wikipedia articles into your mindmap and much more. You can even export your knowledge base as a formatted html document. And that's not all. The InfoRapid KnowledgeBase Builder is also a famous flowcharting tool. You can either create your flowcharts manually or generate them automatically from pseudo code. And there are a thousand more things you can do with the app.
Screenshots
Verdict
The clearest difference is review sentiment: KnowledgeBase Builder at 91% against Angle & Ratio's 50%. KnowledgeBase Builder also leads on update cadence (fortnightly vs every 6 months) and ratings volume (24 vs 1). Angle & Ratio's advantage is price ($0.99 vs $8.99) and rating (5.0 vs 4.7). On ads, in-app purchases, monetization model 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
Angle & Ratio costs $0.99 and KnowledgeBase Builder $8.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Angle & Ratio holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: KnowledgeBase Builder has 24 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 50% of Angle & Ratio's written reviews are positive against 91% of KnowledgeBase Builder's, so the app with the better star average is not the one people write more warmly about.
Angle & Ratio ships an update every 6 months, KnowledgeBase Builder fortnightly. The most recent releases landed on September 22, 2026 and September 7, 2026 respectively.
| Parameter | Angle & Ratio | KnowledgeBase Builder |
|---|---|---|
| Price | $0.99 — better | $8.99 |
| Rating | 5.0 (1 ratings) — better | 4.7 (24 ratings) |
| Positive reviews | 50.0% of reviews | 90.9% of reviews — better |
| Number of ratings | 1 | 24 — better |
| Update frequency | Every 6 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 2 MB | 21 MB |
| Age rating | 4+ | 4+ |
| Developer | Medic Engineering K.K. | Ingo Straub |
Customer experience
Angle & Ratio
KnowledgeBase Builder
In-app purchases
Angle & Ratio
No in-app purchases
KnowledgeBase Builder
No in-app purchases
Questions
Is Angle & Ratio free?
Is KnowledgeBase Builder free?
Which has better reviews, Angle & Ratio or KnowledgeBase Builder?
Do Angle & Ratio or KnowledgeBase Builder have ads?
Which is updated more often, Angle & Ratio or KnowledgeBase Builder?
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