Formulus Free vs Calculus Solver
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Formulus Free
Access a comprehensive collection of essential math formulas for high school and college calculus students. Quickly find the formulas you need without flipping through textbooks or searching online.
- Calculus formula collection
- Algebra and Geometry formulas
- Derivatives
- Integrals
- Limits
- Trigonometry
- Vectors
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Have you ever needed to know that one math formula that you always forget? Do you spend minutes flipping through your textbook or searching the internet for it? Then you need Formulus! Formulus is the perfect study tool. It is a simple, easy to use, easy to navigate collection of the most important formulas and topics for high school and college students taking Calculus. Includes the following subject areas: - Algebra & Geometry - Derivatives - Functions - Integrals - Limits - Logarithms - Matrices - Partial Derivatives - Series & Sequences - Trigonometry - Vectors
Calculus Solver
Instantly solve calculus problems with AI-powered step-by-step explanations. Upload or photograph your math questions and receive detailed solutions covering derivatives, integrals, and more. A free trial is available before subscribing.
- AI-powered problem solving
- Photo recognition for problems
- Detailed step-by-step solutions
- Covers derivatives and integrals
- Copy and share solutions
- Free trial available
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Easily solve any calculus problem ASAP with CalcAI, a step-by-step calculus solver app! Got a tricky calculus question? Need instant step-by-step explanations? CalcAI is here to assist you. We've got you covered for any calculus problem you need to solve. Just upload or take a photo of your calculus problems, and CalcAI will instantly recognize the problem and help you solve it with a thorough explanation. **KEY FEATURES** - Upload or take a photo of a handwritten or digital calculus problem. - Copy and share the detailed solutions. - Topics cover all aspects of calculus, from basic derivatives to advanced integrals and multivariable calculus. - Solutions are provided with detailed steps. - We provide a free trial to test out the app. A subscription is required to access the app. By using CalcAI, you accept our Terms of Use and Privacy Policy. Terms of use: https://renaissanceapps.com/terms-conditions Privacy Policy: https://renaissanceapps.com/privacy-policy
Screenshots
Verdict
The clearest difference is in-app purchases: Formulus Free at none against Calculus Solver's 2. Formulus Free also leads on rating (5.0 vs 4.5) and review sentiment (81% vs 50%). Calculus Solver's advantage is ads (none vs shown). On price, ratings volume, update cadence 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. Calculus Solver sells 2 in-app purchases, starting at $5.99 per 7 days. Formulus Free asks for nothing beyond the download.
Formulus Free holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 5 and 13 respectively. Written reviews point the same way: 81% of Formulus Free's written reviews are positive against 50% of Calculus Solver's.
Formulus Free ships an update every 6 weeks, Calculus Solver every 2 months. The most recent releases landed on October 31, 2026 and October 30, 2026 respectively.
| Parameter | Formulus Free | Calculus Solver |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (5 ratings) — better | 4.5 (13 ratings) |
| Positive reviews | 81.1% of reviews — better | 50.0% of reviews |
| Number of ratings | 5 | 13 — better |
| Update frequency | Every 6 weeks — better | Every 2 months |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | Ad-supported — better | Subscription |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 14.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 12 MB | 23 MB |
| Age rating | +4 | 4+ |
| Developer | Daniel Byon | Renaissance Apps LLC |
Customer experience
Formulus Free
Calculus Solver
Bugs and requests
Formulus Free
Reported bugs
13 issues- App crashes on startup after updates
- Freezing and lag issues during use
- Compatibility issues with larger iPhone screens
- Incorrect cross product entry formula
- Error in Simpson's rule integral approximation
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- Typo in power series expansion for cos(x)
- Incorrect absolute value notation in some formulas
- Change-of-base formula error
- Inconsistent header display (wrong category shown)
- Some formula entries are empty or incomplete
- Blurry image quality for some formulas
- Taylor series functionality not working
- App stops opening after certain updates
Requested features
15 requests- Add practice problems and worked examples
- Include inverse trigonometric functions
- Add 3D shapes and geometry formulas
- Implement search functionality for quick formula finding
- Add graphing and calculation capabilities
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- Include zoom feature for better readability
- Add definitions and learning explanations
- Separate Algebra and Geometry into distinct categories
- Allow users to add personal notes and corrections
- Support for multiple languages
- Remember app location when reopening
- Expand power series expansions section
- Include tabular integration by parts method
- Add radius of convergence information
- Include Euler's formula in complex numbers section
Calculus Solver
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Formulus Free
No in-app purchases
Calculus Solver
- Calculus Answers: Weekly Sub3 Days trial$5.997 Days
- Calculus Answers: Weekly Sub$34.991 Year
Questions
Is Formulus Free free?
Is Calculus Solver free?
Which has better reviews, Formulus Free or Calculus Solver?
Do Formulus Free or Calculus Solver have ads?
Which is updated more often, Formulus Free or Calculus Solver?
Other comparisons
