Line vs Chart Builder Graph Maker
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Line
This app models the relationship between two variables using linear regression. It fits a linear equation to observed data, calculating the slope, intercept, correlation coefficient, and coefficient of determination to assess the model's fit.
- Linear regression modeling
- Calculate slope and intercept
- Correlation coefficient calculation
- Coefficient of determination (R2)
- Model fit assessment
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The Line-Fit app uses linear regression to model the relationship between two variables (x and y) by fitting a linear equation to observed data. One variable is considered to be an explanatory (independent) variable, and the other is considered to be a response (dependent) variable. A linear regression line has an equation of the form Y = a + bX, where X is the explanatory variable and Y is the dependent variable. The slope of the line is b, and the intercept is a (the value of y when x = 0). To measure the association between the two variables the correlation coefficient is used, which is a value between -1 and 1 indicating the strength of the association of the observed data for the two variables. The coefficient of determination, R2, measures how close the data are to the fitted regression line. In general, higher values of R2 indicate a better fit of the model to the given data. R2 is always positive and equal to 1.0 for a perfect fit.
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.
Screenshots
Verdict
The clearest difference is review sentiment: Chart Builder Graph Maker at 62% against Line's 0%. Chart Builder Graph Maker also leads on rating (4.4 vs 3.7) and update cadence (every 2 days vs every 41 months). Line's advantage is ads (none vs shown) and monetization model (free vs free with in-app purchases). On price, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
Chart Builder Graph Maker holds the better App Store score, 4.4 against 3.7. That said, the two scores are not equally well evidenced: Chart Builder Graph Maker has 127 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 0% of Line's written reviews are positive against 62% of Chart Builder Graph Maker's.
Line ships an update every 41 months, Chart Builder Graph Maker every 2 days. The most recent releases landed on September 28, 2026 and October 8, 2026 respectively.
| Parameter | Line | Chart Builder Graph Maker |
|---|---|---|
| Price | Free | Free |
| Rating | 3.7 (3 ratings) | 4.4 (127 ratings) — better |
| Positive reviews | 0.0% of reviews | 61.5% of reviews — better |
| Number of ratings | 3 | 127 — better |
| Update frequency | Every 41 months | Every 2 days — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 12.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 34 MB |
| Age rating | 12+ | 4+ |
| Developer | Bjarne Berge | Keitaro Ohno |
Customer experience
Line
Chart Builder Graph Maker
In-app purchases
Line
No in-app purchases
Chart Builder Graph Maker
No in-app purchases
Questions
Is Line free?
Is Chart Builder Graph Maker free?
Which has better reviews, Line or Chart Builder Graph Maker?
Do Line or Chart Builder Graph Maker have ads?
Which is updated more often, Line or Chart Builder Graph Maker?
Other comparisons
