Ora vs The Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Ora
Visualize global times on an interactive globe. This app allows you to see the current time in various locations worldwide and even travel through time to check past or future times. It's ideal for professionals working across time zones or anyone tracking international events.
- Interactive 3D globe display
- View time in multiple global locations
- Time travel feature to see past/future times
- Useful for cross-time zone work
- Track international events
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Ora is a world clock app, in the most literal sense possible. Like any good world clock, it lets you see the time in different locations around the globe; but unlike others, it can show you those times on an actual globe, and you can use Time Travel to see different times. This is especially useful if you work across time zones, or are following events in other time zones; for all those times you might ask questions like “What time is it in New York when it’s 3pm in London?”.
The Calculator
This app combines a powerful calculator with a note-taking feature, allowing you to document calculations as you perform them. It also offers unit and currency conversions, with customizable appearance and settings.
- Integrated notepad for documenting calculations
- Unit and currency conversion
- Basic, scientific, and conversion calculators
- Customizable appearance (light, dark, black)
- Adjustable number formats and decimal places
- History with attachable notes
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How many steps does it take to work out a bill? Open the calculator, get a number, write it down somewhere, come back, forget where you were. The notepad lets you write the whole thing as text — every line worked out as you type it: rent = 1200 utilities = 85 rent + utilities 1285 Name your values and reuse them. It reads plain English too: 20 ml in tsp 100 USD in EUR 20% off 80 Also good for - Travelling — convert as you go, the whole day's spending on one page - Cooking — cups, ounces, Fahrenheit, all converted in one place - Estimating materials — add up three walls, divide by coverage per tin - Quoting work — change one number, everything recalculates Three more calculators - Basic — large type, generous spacing, your working shown as you build it - Scientific — trigonometry, logarithms, powers and roots, 2nd key cycles four layers - Convert — 123 units across 15 categories, currency rates update automatically Things you can adjust - Number format — comma, period, space, apostrophe, or none - Decimal places — full precision, or fixed to a number you choose - Appearance — light, dark, true black, or follow the system - Startup page — pick which one opens when you launch the app - Haptics — tune the strength or switch it off Also inside - History, with notes you can attach - Control Centre button for one-tap access - Available in many languages, with unit names and keywords in each Built on minimalist principles Clean design, smooth interaction, no noise — only what actually matters. The Calculator is free to use. Convert and Notepad are Premium features. Terms of Use: https://www.minlsm.com/terms Privacy Policy: https://www.minlsm.com/privacy
Screenshots
Verdict
The clearest difference is update cadence: The Calculator at every 6 days against Ora's every 2 months. The Calculator also leads on iOS requirement (16.6 vs 18.0). Ora's advantage is ratings volume (71 vs 2) and device support (5 vs 1). On price, rating, ads and in-app purchases 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. Ora sells 3 one-off in-app purchases and The Calculator sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 4.9 for Ora against 5.0 for The Calculator. That said, the two scores are not equally well evidenced: Ora has 71 ratings behind it against 2, so its average is the more settled of the two.
Ora ships an update every 2 months, The Calculator every 6 days. The most recent releases landed on November 4, 2026 and November 5, 2026 respectively.
| Parameter | Ora | The Calculator |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (71 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 85.2% of reviews | — |
| Number of ratings | 71 — better | 2 |
| Update frequency | Every 2 months | Every 6 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Freemium |
| Devices | iPhone, iPad, Mac, Apple Watch, Vision Pro — better | iPhone |
| Requires iOS | 18.0 | 16.6 — better |
| Further details — not scored | ||
| Size | 103 MB | 17 MB |
| Age rating | 4+ | 4+ |
| Developer | Dan Eden | YiDe Liu |
Customer experience
Ora
The Calculator
Bugs and requests
Ora
Reported bugs
11 issues- Widget not reloading or working
- Widget time is not up to date
- Widget time is out of sync
- Widget doesn't show added countries
- Widget displays template without timezones
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- Widget time is not accurate
- Widget rounds up time instead of showing live timings
- Widget doesn't show minutes
- Widget displays only hours
- Widget not showing correct time
- Widget not showing real time
Requested features
15 requests- Add 24-hour format
- Type in a specific time for conversion
- Support for Japanese language
- Rotate dial for time zone adjustment
- iCloud sync of added cities
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- Add more cities
- Option to sort cities
- Reorder timezone tiles
- Option for timezone perspective only
- Widgets with multiple digital clocks
- Widgets showing minutes for each city
- Home screen widget with multiple time zones
- More responsive slider
- Improve globe feature with accurate shadow
- Add cities in WITA (UTC+8)
The Calculator
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Ora
- Small tip$1.99
- Medium tip$5.99
- Large tip$12.99
The Calculator
- Premium$4.991 Month
- Premium$29.991 Year
- Premium$9.99









