Calculate84 vs StudySpotFinder
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
StudySpotFinder
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Miami Study Spots is the easiest way to find your next favorite place to study on and around Miami University's campus. Whether you need dead silence before a final or a lively coffee shop energy to grind through a group project, Miami Study Spots helps you find the right environment fast. Browse a list of student-reviewed study locations, check the noise level and seating capacity at a glance, and read real descriptions written by students who actually use these spots. Every spot includes the details that actually matter — how loud or quiet it is, how many seats are available, and an honest description of what to expect when you get there. No guessing, no wasted trips across campus to find every seat taken or the place louder than expected. Think a spot is missing? Add it yourself. Miami Study Spots is crowd-sourced and community-driven. If you know a hidden gem — a quiet floor in a building most people overlook, a café that's always half-empty — add it in seconds. Just drop the name, seat count, noise level, and a quick description and it's live for the whole Miami community to find. Miami Study Spots is designed to be simple. No accounts, no setup, no clutter. Open the app, find a spot, go study.
Screenshots
Verdict
The clearest difference is in-app purchases: StudySpotFinder at none against Calculate84's 6. StudySpotFinder also leads on ads (none vs shown) and iOS requirement (16.4 vs 18.0). Calculate84's advantage is chart position (#113 vs unranked) and device support (3 vs 1). On price and update cadence 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. StudySpotFinder asks for nothing beyond the download.
Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on November 12, 2026 and October 31, 2026 respectively.
| Parameter | Calculate84 | StudySpotFinder |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (55K ratings) — better | — |
| Positive reviews | 74.2% of reviews | — |
| Number of ratings | 55K — better | — |
| Update frequency | Fortnightly | Fortnightly |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Best chart rank | #113 — better | — |
| Devices | iPhone, iPad, Mac — better | iPhone |
| Requires iOS | 18.0 | 16.4 — better |
| Further details — not scored | ||
| Size | 71 MB | 0 MB |
| Age rating | 12+ | 4+ |
| Developer | Century Light LLC | Owen Miller |
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
StudySpotFinder
Not enough reviews yet to summarise bugs or requests.
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
StudySpotFinder
No in-app purchases
Questions
Is Calculate84 free?
Is StudySpotFinder free?
Do Calculate84 or StudySpotFinder have ads?
Which is updated more often, Calculate84 or StudySpotFinder?
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