Comparison

Angle & Ratio vs KnowledgeBase Builder

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Read full description

"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).

About

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.

Highlights
  • Save text documents and web pages
  • Full-text search
  • Organize with mind maps
  • Automatic mind map creation
  • Wikipedia import
  • Export to HTML
  • Flowcharting tool
Features
Read full description

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

Angle & Ratio4 screens
KnowledgeBase Builder4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard5 real differences · 5 level
Angle & Ratio versus KnowledgeBase Builder: the parameters behind the verdict, then further details
ParameterAngle & RatioKnowledgeBase Builder
Price$0.99 — better$8.99
Rating5.0 (1 ratings) — better4.7 (24 ratings)
Positive reviews50.0% of reviews90.9% of reviews — better
Number of ratings124 — better
Update frequencyEvery 6 monthsFortnightly — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size2 MB21 MB
Age rating4+4+
DeveloperMedic Engineering K.K.Ingo Straub

Customer experience

Angle & Ratio

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

KnowledgeBase Builder

All ratings24 ratings
Positive95.8%
Neutral0.0%
Negative4.2%
Written reviews22 reviews
Positive90.9%
Neutral0.0%
Negative9.1%

In-app purchases

None

Angle & Ratio

No in-app purchases

None

KnowledgeBase Builder

No in-app purchases

Questions

Is Angle & Ratio free?
Angle & Ratio costs $0.99, with no in-app purchases.
Is KnowledgeBase Builder free?
KnowledgeBase Builder costs $8.99, with no in-app purchases.
Which has better reviews, Angle & Ratio or KnowledgeBase Builder?
Angle & Ratio is rated higher. Angle & Ratio averages 5.0 out of 5 from 1 ratings, while KnowledgeBase Builder averages 4.7 from 24 ratings.
Do Angle & Ratio or KnowledgeBase Builder have ads?
Neither Angle & Ratio nor KnowledgeBase Builder shows ads.
Which is updated more often, Angle & Ratio or KnowledgeBase Builder?
Angle & Ratio ships an update every 6 months, and KnowledgeBase Builder fortnightly. Most recently, Angle & Ratio was updated on September 22, 2026 and KnowledgeBase Builder on September 7, 2026.

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