MR. CALC vs QR Code
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MR. CALC
A straightforward calculator app for iPhone and iPad that displays formulas as you calculate. It offers seven different calculator types, easily switchable by swiping, making it convenient for managing multiple calculations simultaneously.
- Formula display during calculation
- Seven different calculator types
- Swipe to switch calculators
- Simple and easy to use
- Available for iPhone and iPad
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It is a simple and easy to use calculator available for iPhone and iPad. Unlike the standard calculator app, the formula is displayed during the calculation. In addition, there are seven calculators available, and you can switch between them by swiping. This is useful when you are doing multiple calculations at the same time.
QR Code
This utility app automatically saves a history of all scanned QR codes. It requires camera permissions to function correctly.
- Scan QR codes
- Save scan history
- Requires camera permission
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If the camera does not appear, please allow the camera permission in the settings. - Save scan history A record of the scanned QR code is automatically saved.
Screenshots
Verdict
The clearest difference is rating: MR. CALC at 4.8 against QR Code's 1.0. MR. CALC also leads on ratings volume (39 vs 1) and update cadence (every 10 days vs monthly). QR Code's advantage is ads (none vs shown) and monetization model (free vs ad-supported). On price 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. Neither carries in-app purchases, so what you see is what you pay.
MR. CALC holds the better App Store score, 4.8 against 1.0. That said, the two scores are not equally well evidenced: MR. CALC has 39 ratings behind it against 1, so its average is the more settled of the two.
MR. CALC ships an update every 10 days, QR Code monthly. The most recent releases landed on October 4, 2026 and October 7, 2026 respectively.
| Parameter | MR. CALC | QR Code |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (39 ratings) — better | 1.0 (1 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 39 — better | 1 |
| Update frequency | Every 10 days — better | Monthly |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 13.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 5 MB | 36 MB |
| Age rating | 4+ | 4+ |
| Developer | Yuma Kitasei | HoJin Lee |
Customer experience
MR. CALC
QR Code
In-app purchases
MR. CALC
No in-app purchases
QR Code
No in-app purchases
Questions
Is MR. CALC free?
Is QR Code free?
Which has better reviews, MR. CALC or QR Code?
Do MR. CALC or QR Code have ads?
Which is updated more often, MR. CALC or QR Code?
Other comparisons
