Calcu Plus vs calculator DUO
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Calcu Plus
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Make your calculations easy and colourful Features in free version: Basic calculations with plain color themes Choose button vibrate On/Off on tap Choose decimal places Features With In-App Purchase: Enjoy All Shaded themes including Dark Theme This is my first App. please let me know of any errors and suggestion you have. I will be happy to include more ideas in future.
calculator DUO
This utility app offers a modern calculator with a visual history feature, eliminating the need to memorize previous calculations. It also includes a comprehensive unit converter and a tip calculator that bases tips on pre-tax amounts.
- Visual history calculator (RESULT SHELF™)
- Unit converter
- Tip calculator (pre-tax)
- Distraction-free design
- Precise and efficient
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A scientific calculator with history, memory and a keypad made for one hand. Save useful answers and tap to use them again on iPhone and iPad. WITHIN THUMB REACH Move and resize the left- or right-hand keypad to suit your grip. KEEP THE ANSWERS YOU NEED Save useful results on a visual shelf. Tap to reuse them, recall your last answer, or search your calculation history and mark favorites. CORRECT INPUT WITH CONFIDENCE Swipe to delete a digit or function. The deleted content stays visible until your next input; tap the return button to undo the deletion. FROM EVERYDAY TO SCIENTIFIC Use arithmetic, percentages, powers, roots, logarithms and trigonometric functions. Long-press a result for a large display, with adjustable text, color, font and size. MAKE IT YOURS Five themes, optional digit grouping and an interface in 50 languages. No account is required. Expressions, saved results and calculation history are stored on your device. DATES AND TIME, TOO Find the time between two dates, add or subtract days and hours, and calculate across time zones. The free app may show banner ads. Remove Ads is an optional one-time purchase, with purchase restoration through the same Apple Account.
Screenshots
Verdict
Calcu Plus and calculator DUO are too close to call on the numbers: across 5 compared parameters — price, update cadence, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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. Calcu Plus sells 1 one-off in-app purchase and calculator DUO sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Calcu Plus ships an update every 11 days, calculator DUO every 10 days. The most recent releases landed on October 18, 2026 and October 9, 2026 respectively.
| Parameter | Calcu Plus | calculator DUO |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (3 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 3 — better |
| Update frequency | Every 11 days | Every 10 days — better |
| Ads | — | Yes |
| In-app purchases | Yes | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 16.1 — better | 16.5 |
| Further details — not scored | ||
| Size | 2 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | Jaspreet Singh | Wenbin lei |
In-app purchases
Calcu Plus
- Get All Themes$3.99
calculator DUO
- Remove Ads$7.99
