Calculate84 vs Gradescope
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Calculate84
This app offers a modern graphing calculator experience on your iPhone. It features fast, interactive touch-screen graphing, scrollable windows, and intelligent error messages for a more intuitive user experience. Designed to be a usable alternative to physical graphing calculators.
- Fast, interactive touch-screen graphing
- Scrollable windows
- Intelligent error messages
- Intuitive interface
- Designed for TI-84 users
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Graphing made for iPhone Calculate84 brings the graphing calculator experience to iPhone with a fast, touch-friendly design. What you can do: • Plot and explore graphs with smooth touch controls • Find familiar calculator functions quickly • Scroll naturally through equations and results • Get clearer, more helpful error messages • Send feedback directly from the app Why we built Calculate84 We relied on graphing calculators ourselves and wanted an app that felt easier to use on a modern phone. Before launch, we worked with students to refine the experience, and we continue improving it based on user feedback. Send feedback Tap the red Feedback button in the app. Terms of Use (EULA): https://calculate84.com/terms-of-use
Gradescope
Easily upload assignments for courses using this app. Submit files from your device or scan your work directly. Assign pages for variable-length assignments and resubmit if needed before the deadline.
- Upload assignments
- Scan documents with camera
- Select existing files
- Assign pages for variable-length assignments
- Resubmit assignments
- View submitted and graded assignments
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Students, upload your assignments to Gradescope more easily than ever before! If your instructor uses Gradescope for your assignments, you can now upload your submission with our mobile app. After installing and opening the app, login to see your Gradescope courses and assignments. To upload a submission, click on the assignment in the “Not Submitted” tab and either “Select File” to select an existing file from your device or “Scan” all pages of your completed work using your iPhone’s camera. Once you submit your file(s), for templated assignments, you’re all set. For variable-length assignments, “Assign pages” to indicate where your answer for each question appears within your submission. It’s that easy! After confirming, your assignment then moves to the “Submitted” tab. If needed, you can resubmit your assignment until the due date your instructor set has passed. Once it is graded and grades are published for the assignment, it then moves to the “Graded” tab. Note: For V1 of the app, you will be directed to our mobile website for any advanced functionality, including viewing feedback and submitting timed, programming, or online assignments. Stay tuned for future updates that will allow you to do even more with our mobile app!
Screenshots
Verdict
The clearest difference is review sentiment: Calculate84 at 75% against Gradescope's 9%. Calculate84 also leads on rating (4.8 vs 1.4) and ratings volume (54K vs 273). Gradescope's advantage is in-app purchases (none vs 6) and ads (none vs shown). On price 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. Calculate84 sells 6 in-app purchases, starting at $2.99 per month. Gradescope asks for nothing beyond the download.
Calculate84 holds the better App Store score, 4.8 against 1.4. That said, the two scores are not equally well evidenced: Calculate84 has 54K ratings behind it against 273, so its average is the more settled of the two. Written reviews point the same way: 75% of Calculate84's written reviews are positive against 9% of Gradescope's.
Calculate84 ships an update fortnightly, Gradescope every 2 months. Both last shipped on October 24, 2026.
| Parameter | Calculate84 | Gradescope |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (54K ratings) — better | 1.4 (273 ratings) |
| Positive reviews | 74.6% of reviews — better | 8.7% of reviews |
| Number of ratings | 54K — better | 273 |
| Update frequency | Fortnightly — better | Every 2 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Best chart rank | #173 — better | — |
| Devices | iPhone, iPad, Mac — better | iPhone, iPod |
| Requires iOS | 18.0 | 13.4 — better |
| Further details — not scored | ||
| Size | 71 MB | 37 MB |
| Age rating | 12+ | 4+ |
| Developer | Century Light LLC | Turnitin |
Customer experience
Calculate84
Gradescope
User reviews
Calculate84
From 54K App Store ratingsWhat we love
- 👍 Identical to TI-84 calculator
- 🚀 Seamless and intuitive user experience
- 💰 Affordable alternative to physical calculator
- 📱 Convenient to have on phone
- 🔍 Comprehensive functionality matching physical calculator
Room to improve
- 🐛 Occasional bugs and crashes
- 🔍 Missing some advanced features like regression types
- 🔒 Previous purchases removed without warning
- 💰 Subscription model can be expensive
- 📺 Intrusive ads in free version
Gradescope
From 273 App Store ratingsWhat we love
- 🚀 Quick and effective submission process
- 👍 Clean and well-designed app
- 📸 Convenient scanning and photo upload
Room to improve
- 🔑 Frequent log-in issues and lack of session persistence
- 📱 Suboptimal iPad and tablet experience
- 🐛 Buggy scanning and submission functionality
- 🤔 Lack of key features like viewing graded assignments
Bugs and requests
Calculate84
Reported bugs
4 issues- Crashes when using 2-sample T/Z interval functions
- Incorrect results for inverse trig functions
- Issues with graphing parabolas and tracing points
- Regression equation not displayed correctly
Requested features
5 requests- Add TVM solver functionality
- Implement more regression types
- Allow disabling of ads for free users
- Restore previous purchase benefits
- Optimize for mobile experience instead of emulating physical calculator
Gradescope
Reported bugs
3 issues- Camera flash issues during scanning
- Photos not uploading in correct order
- Inconsistent download button behavior
Requested features
3 requests- Ability to sort assignments by due date
- Integration of tools for instructors
- Improved iPad and tablet optimization
In-app purchases
Calculate84
- Monthly Pro Subscription3 Days trial$2.991 Month
- Annual Pro Subscription7 Days trial$6.991 Year
- Lifetime Subscription$6.99
- Lifetime Subscription$9.99
- Lifetime Subscription$12.99
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- Lifetime Pro Subscription$29.99
Gradescope
No in-app purchases
Questions
Is Calculate84 free?
Is Gradescope free?
Which has better reviews, Calculate84 or Gradescope?
Do Calculate84 or Gradescope have ads?
Which is updated more often, Calculate84 or Gradescope?
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