MemCalc vs calculator DUO
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MemCalc
A user-friendly basic calculator designed for students, featuring a clean interface and the ability to store and recall past calculations. Quickly perform essential math operations and review your work.
- Easy to use basic calculator
- Gorgeous design
- Fast calculations
- Stores all calculations
- Review history in portrait mode
- Tap to recall stored numbers
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Best calculator for students! The MemCalc is an easy to use basic calculator with gorgeous design which allows fast calculations in serius situations. Stores every single calculations that you can review in portrait mode. Tap on any stored number to recall it into the calculator.
calculator DUO
This utility app allows for comfortable one-handed calculations by letting you reposition the keypad. It also provides features to save and reuse past answers, correct input with a swipe, and handle both everyday and scientific calculations, including date and time functions.
- One-handed keypad repositioning
- Save and reuse past answers
- Swipe to delete/correct input
- Everyday and scientific functions
- Date and time calculations
- Customizable themes and display
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Calculate comfortably with one hand. Put past answers to work. Move the keypad within thumb reach, reuse saved results with a tap, and swipe to correct your input. Handle everyday math, scientific functions, dates and time in one place. 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
The clearest difference is in-app purchases: MemCalc at none against calculator DUO's 1. MemCalc also leads on ads (none vs shown) and iOS requirement (9.1 vs 16.5). calculator DUO's advantage is update cadence (every 10 days vs every 5 months) and ratings volume (3 vs 1). On price, rating 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. calculator DUO sells 1 one-off in-app purchase. MemCalc asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for MemCalc against 5.0 for calculator DUO. Both are backed by a comparable volume of ratings — 1 and 3 respectively.
MemCalc ships an update every 5 months, calculator DUO every 10 days. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.
| Parameter | MemCalc | calculator DUO |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (3 ratings) |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 1 | 3 — better |
| Update frequency | Every 5 months | Every 10 days — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 9.1 — better | 16.5 |
| Further details — not scored | ||
| Size | 20 MB | 18 MB |
| Age rating | 4+ | 4+ |
| Developer | Krisztian Bosze | Wenbin lei |
Customer experience
MemCalc
calculator DUO
In-app purchases
MemCalc
No in-app purchases
calculator DUO
- Remove Ads$1.99
