Numerical Solver vs Scollr
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Numerical Solver
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Numerical Solver is a mobile-first numerical mathematics tool for solving equations, differential equations, and analyzing mathematical functions. Solve equations numerically Solve algebraic equations with one or more variables, including nonlinear equations and systems of equations. โข Solve equations numerically โข Solve nonlinear equations and systems โข Find real and complex solutions โข Evaluate solutions at specific values โข Solve equations with a single variable for free, with no limits Solve ordinary differential equations Numerical Solver supports linear and nonlinear ordinary differential equations, including initial value problems (IVPs), boundary value problems (BVPs), and systems of ODEs with multiple dependent variables. โข Solve initial value problems โข Solve boundary value problems โข Solve linear and nonlinear ODEs โข Solve systems of ODEs โข Compute the solution at a given value of x โข Plot numerical solutions Visualize ODE systems For systems of ODEs, choose which variables to plot against each other and explore relationships and trajectories within the system. For example, you can solve the Lorenz system and visualize its characteristic trajectories through different combinations of variables. Differentiate equations Differentiate equations with respect to x or y and evaluate the derivative at specific values. โข Differentiate equations with respect to x or y โข Evaluate derivatives at given x and y values โข Work with multivariable expressions Plot functions and data Plot mathematical functions or visualize a list of x,y data points. โข Plot functions โข Plot lists of data โข Explore numerical results visually Numerical computing on the go Numerical Solver is designed to give you practical numerical tools wherever you are, without requiring an internet connection. Use it for mathematics, engineering, science, education, or whenever you need to solve and visualize numerical problems. https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Scollr
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Scollr is a personalized feed for discovering research papers from journals, preprint servers, and academic repositories. Follow the topics, authors, and journals that matter to you. Scollr learns from the signals you give it - what you follow, save, and read - to build a research feed that fits your interests. PERSONALIZED RESEARCH FEED See papers shaped by your topics, authors, journals, bookmarks, and reading signals. Two researchers in the same field can get meaningfully different feeds based on what they care about. FOLLOW TOPICS, AUTHORS, AND JOURNALS Track broad fields, niche topics, specific researchers, journals, and preprint sources. Refine your follows anytime as your projects change. PLAIN-LANGUAGE PAPER SUMMARIES Many papers include short TLDR summaries so you can quickly decide what deserves a deeper read. SAVE PAPERS TO COLLECTIONS Organize papers by project, theme, class, lab meeting, or read-later list. Keep collections private or share them publicly. DISCUSS RESEARCH Comment on papers, ask questions, and point other readers to related work. FOLLOWING, DISCOVER, AND LATEST Use Following for personalized papers, Discover for broader recommendations, and Latest for new arrivals in your fields. BUILT FOR SCHOLARS AND CURIOUS READERS Scollr is for PhD students, researchers, clinicians, engineers, students, and anyone who wants a better way to keep up with academic papers. Scollr indexes millions of papers from OpenAlex across disciplines, journals, preprints, and repositories. New papers are added daily. Free to use. No paywall. No ads.
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Verdict
The clearest difference is in-app purchases: Scollr at none against Numerical Solver's 3. Scollr also leads on update cadence (fortnightly vs monthly) and iOS requirement (15.1 vs 17.6). On price, ads and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Numerical Solver sells 3 in-app purchases, starting at $2.99 per year. Scollr asks for nothing beyond the download.
Numerical Solver ships an update monthly, Scollr fortnightly. The most recent releases landed on September 18, 2026 and September 13, 2026 respectively.
| Parameter | Numerical Solver | Scollr |
|---|---|---|
| Price | Free | Free |
| Update frequency | Monthly | Fortnightly โ better |
| Ads | No | No |
| In-app purchases | Yes | No โ better |
| Devices | iPhone, iPad | iPhone, iPad, iPod โ better |
| Requires iOS | 17.6 | 15.1 โ better |
| Further details โ not scored | ||
| Size | 3 MB | 32 MB |
| Age rating | 4+ | 4+ |
| Developer | i-SmartSolutions | Chris Colpitts |
In-app purchases
Numerical Solver
- Create Charts$2.991 Year
- Calculate Integrals$2.991 Year
- Solve system of algebraic eqns3 Days trial$4.991 Year
Scollr
No in-app purchases
Questions
Is Numerical Solver free?
Is Scollr free?
Do Numerical Solver or Scollr have ads?
Which is updated more often, Numerical Solver or Scollr?
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