DataAnalysis vs Julius AI
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DataAnalysis
This iPad app allows users to plot and fit various types of data using curve fitting, value prediction, and kinetic analysis. Data can be imported or entered manually, with options for preprocessing before plotting and customization of graphs. It supports multiple fitting methods and can generate standard curves for unknowns.
- Plotting and fitting of x,y data
- Data import (txt, csv, clipboard)
- Data preprocessing (average, normalize)
- Customizable graph generation
- Non-linear regression fitting
- Standard curve generation
- Export graphics and text (PDF, PNG, CSV, TXT)
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DataAnalysis is a general purpose iPad App for the plotting and fitting of all types of data that can be formulated as x, y pairs. The program can be easily used by both students and professionals. It is particularly useful for quick analyses of various types of data by curve fitting, value prediction via a standard curve, and analysis of kinetic data including enzyme kinetics. Data can be entered directly via the keyboard or imported from a text file (.txt), or a comma separated value file (.csv). In addition, data can be pasted from the clipboard. After data entry the user has the option to average, baseline correct, and/or normalize the data before plotting and fitting. Plotting of the data is as simple as pressing the Plot button. The axes are autoscaled and the graph is immediately ready to add to a document or presentation. The user has a variety of options to customize the graph by altering the axes, axes labels, graph title, and changing the symbol, its size and color. Using touch and drag the user can create a selection box allowing the creation of a data subset. Once the data subset has been selected the user has two options: (1) To zoom in on the selected data. Any fitting done in this mode is global (e.g. uses all the data). (2) To zoom and perform a fitting only on the selected subset of the data. The data can be fit to a variety of mathematical equations by non-linear regression including simple functions such as linear, 2nd and 3th order polynomials, power, exponential, and log functions. Data can also be fit to more complex equations for such processes as radioactive decay, enzyme kinetics, 1st and 2nd order chemical reactions, as well as gaussian, logistics and surge functions. The fit can be overlaid on the data with different line widths, types and thicknesses. Lowess Regression (LOcal Weighted regrESSion) can also be used to fit data without the need to specify a mathematical function. Not only does Lowess Regression not require a mathematical function, but also does not require parameters (non-parametric). This fitting method is used extensively to fit everything from election polling to astrophysics data, where the data have a large degree of scatter. For many analytical situations, the data fit can be used as a standard curve to determine the value of unknowns. This analytical procedure is completely automated within DataAnalysis. The program output, graphics and text, can be copied, emailed, or uploaded to cloud storage such as iCloud, Dropbox, Box and OneDrive in a variety of formats including PDF, PNG, CSV and TXT. The graphics in PDF format can be edited with programs like Adobe Illustrator™ and AutoDesk Graphic™ as objects. DataAnalysis also supports multitasking and printing of input data as well as all forms of output. DataAnalysis has built in tool tips, a comprehensive web based User Guide and videos tutorials all available via the Help Menu.
Julius AI
This AI-powered assistant analyzes data from spreadsheets and CSV files, creating dynamic graphs and providing step-by-step calculus solutions. It helps transform raw data into meaningful insights for informed decision-making.
- AI-powered data analysis
- Spreadsheet and CSV support
- Dynamic graph generation
- Data manipulation tools
- Step-by-step calculus solutions
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Julius is your AI-powered data analyst and math helper, leveraging ChatGPT and Anthropic alongside other leading technologies. Julius is adept at handling various data formats such as CSV, Excel, and Google Sheets. Simply upload or link your spreadsheets, and let Julius dive into the depths of your data. Key Features: - Versatile Data Analysis: Effortlessly upload or link your spreadsheet for analysis. - Dynamic Graph Maker: Generate both basic and advanced charts tailored to your specific data visualization needs. - Data Manipulation Made Easy: Group, filter, and transform your data with intuitive controls. - Calculus Solver: Julius is the best math helper, with step-by-step solutions With Julius AI, you don't just analyze data; you unlock its true potential. Transform the raw data in your spreadsheet or CSV into meaningful insights, create compelling models, generate clean graphs, and make informed decisions with ease. Experience the future of data analysis today! Terms of Use for Julius AI: Math Helper & Graph Maker: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is rating: Julius AI at 4.8 against DataAnalysis's 4.1. Julius AI also leads on update cadence (every 9 days vs every 2 months) and device support (3 vs 1). DataAnalysis's advantage is in-app purchases (none vs 11). On price, review sentiment, ads 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. Julius AI sells 11 in-app purchases, starting at $17.99 per month. DataAnalysis asks for nothing beyond the download.
Julius AI holds the better App Store score, 4.8 against 4.1. Both are backed by a comparable volume of ratings — 106 and 399 respectively. Written reviews point the same way: 64% of DataAnalysis's written reviews are positive against 68% of Julius AI's.
DataAnalysis ships an update every 2 months, Julius AI every 9 days. The most recent releases landed on September 22, 2026 and October 6, 2026 respectively.
| Parameter | DataAnalysis | Julius AI |
|---|---|---|
| Price | Free | Free |
| Rating | 4.1 (106 ratings) | 4.8 (399 ratings) — better |
| Positive reviews | 64.2% of reviews | 68.1% of reviews — better |
| Number of ratings | 106 | 399 — better |
| Update frequency | Every 2 months | Every 9 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 14.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 26 MB | 18 MB |
| Age rating | 4+ | 4+ |
| Developer | Data Evaluation Systems | Caesar Labs |
Customer experience
DataAnalysis
Julius AI
User reviews
DataAnalysis
From 106 App Store ratingsWhat we love
- 👍 Useful for plotting data
- 👍 Good for quick graphs
- 👍 Accurate results
- 👍 Clearly plots points
- 👍 Shows y-intercept and gradient
Room to improve
- 🐛 App crashes
- 🐛 Not working at all
- 🐛 Hangs up
- 🐛 UI/UX poorly made
- 🐛 Tacky UI
Julius AI
From 399 App Store ratingsWhat we love
- 🚀 Fast and efficient
- 👍 User-friendly interface
- 💡 Powerful data analysis capabilities
- 🚀 Quick problem-solving
- 👍 Helpful for students and professionals
Room to improve
- 🐛 Bugs and glitches
- 💰 Expensive subscription
- 🐛 Compatibility issues
- 🐛 Unreliable performance
Bugs and requests
DataAnalysis
Reported bugs
39 issues- App will not let import .csv files
- No option to import a csv file or to paste data from the clipboard
- Support page not working
- Font and background color is white, unable to make out input
- Forcing users to use Dropbox or mail app for import
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- iPad only supports vertical display
- Update failed, app hangs up
- App not working at all, closes when plotting data
- Crashes on iPad 2
- App crashes when trying to launch
- Difficulty using app in portrait mode on iPad
- App respects landscape mode when iPad is oriented landscape
- Extrapolation is a pain, negative y values are non-numerical
- App has no automatic re-scaling function
- Data beyond original data is off the graph
- Cannot use as a standard curve without extrapolation
- Developer website forces to manual, no contact info
- App crashes with larger amounts of data (1000 x and y)
- Graph attributes not saved
- File names not saved
- App crashes on import of csv file
- App crashed and required iPad restart
- App crashes when trying to launch on iPad 2
- App crashes with large data sets
- App does not save graph attributes or file names
- App does not work properly, help is not working
- Sometimes does not start properly
- App crashes on import of CSV files
- App crashes when trying to launch
- App crashes with large data amounts
- Graph attributes and file names are not saved
- App does not work properly, help is not working
- App does not start properly sometimes
- App crashes on CSV import
- App crashes on launch
- App crashes with large data sets
- Graph attributes and file names are not saved
- App does not work properly, help is not working
- App does not start properly sometimes
Requested features
34 requests- Import .csv files
- Paste data from clipboard
- Font color format option
- Generate 1/x^2 from x set
- Multiple y-axes
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- Landscape mode
- Analyze and model several curves on the same graph
- Log scales available
- Gridlines (major and minor)
- User-defined function capabilities
- Create own functions
- Log log plot
- Custom function for fitting
- iPhone compatibility
- Double-Y plot
- Data tables
- Title in the graph
- Open In for PDF
- Save graph with fit and equation as PDF
- Normalize x-axis
- Remember previous entries for functions
- Default test values to previously used
- Standard curve analysis for all functions
- Set x and y axis range
- Extrapolate to values beyond entered data
- Error bars
- Multi-column data
- Weighted fitting
- Import text file from Dropbox
- More than one line per graph
- Logarithmic graph
- Polynomials of degree 4 or higher
- Lorentzian function
- Arbitrary function fitting
Julius AI
Reported bugs
4 issues- White screen on app launch
- Freezing and crashing issues
- Inability to open the app after updates
- Incorrect statistical analysis and data interpretation
Requested features
4 requests- Support for landscape mode on iPad
- Improved memory retention and consistency
- Better database integration and recognition of columns
- Ability to read PDFs and handwritten notes
In-app purchases
DataAnalysis
No in-app purchases
Julius AI
- Basic Monthly$17.991 Month
- Basic Monthly$20.001 Month
- Essential Monthly$37.991 Month
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- Essential Monthly$45.001 Month
- Pro Monthly$49.991 Month
- Pro Monthly$60.001 Month
- Basic Annually$149.991 Year
- Basic Annually$200.001 Year
- Pro Annually$419.991 Year
- Essential Annually$450.001 Year
- Pro Annually$600.001 Year









