IO ∙ Converter & Calculator vs QR Code
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
IO ∙ Converter & Calculator
This utility app offers a comprehensive solution for unit and currency conversions, featuring live currency updates and a built-in calculator. It supports a wide range of units across multiple categories and is available on various Apple platforms.
- 13 conversion categories
- Over 120 units supported
- Live currency exchange rates
- Integrated calculator
- Cross-platform availability (Apple devices)
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IO (Input/Output) is a powerful and simple multiplatform unit and currency converter. Features: ∙ 13 essential categories ∙ Over 120 different units ∙ Live currency updates ∙ Calculator functionality (on iPhone and iPad) ∙ Available on iPhone, iPad, Apple Watch and Mac ∙ No Ads
QR Code
Easily scan QR codes and barcodes to access information. You can also create and share your own codes with others. Upgrade for unlimited scans and an ad-free experience.
- Scan QR codes and barcodes
- Create custom QR codes
- Share codes with friends
- Unlimited scans (PRO)
- Product information access (PRO)
- Ad-free experience (PRO)
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A software that can scan QR codes and barcodes, or manually create and share with your friends SUBSCRIPTIONS - You can subscribe for PRO account with unlimited scans, products infos and no ads - Subscription options are: 1-week with 3-day trial, 1-month with 3-day trial. - Subscription automatically renews for the same price and duration period as the original "one month", "one week", package unless auto-renew is turned off at least 24-hours before the end of the current period - Payment will be charged to iTunes Account at confirmation of purchase - Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase Links to our Terms of Service and Privacy Policy can be found below https://kdocs.cn/l/cf161ZVEEZS0 https://kdocs.cn/l/coG65N1yrSNh
Screenshots
Verdict
The clearest difference is review sentiment: QR Code at 100% against IO ∙ Converter & Calculator's 33%. QR Code also leads on price (Free vs $0.99) and rating (5.0 vs 4.0). IO ∙ Converter & Calculator's advantage is in-app purchases (none vs 2) and device support (5 vs 1). On ads and iOS requirement 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
QR Code is free to download; IO ∙ Converter & Calculator costs $0.99 up front. QR Code sells 2 in-app purchases, starting at $19.99 per 7 days. IO ∙ Converter & Calculator asks for nothing beyond the download.
QR Code holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 1 and 4 respectively. Written reviews point the same way: 33% of IO ∙ Converter & Calculator's written reviews are positive against 100% of QR Code's.
IO ∙ Converter & Calculator ships an update every 5 months, QR Code weekly. Both last shipped on October 30, 2026.
| Parameter | IO ∙ Converter & Calculator | QR Code |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 4.0 (1 ratings) | 5.0 (4 ratings) — better |
| Positive reviews | 33.3% of reviews | 100.0% of reviews — better |
| Number of ratings | 1 | 4 — better |
| Update frequency | Every 5 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPhone, iPad, iPod, Mac, Apple Watch — better | iPhone |
| Requires iOS | 15.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 1 MB | 38 MB |
| Age rating | 4+ | 4+ |
| Developer | Alex Codrington | 建 郭 |
Customer experience
IO ∙ Converter & Calculator
QR Code
In-app purchases
IO ∙ Converter & Calculator
No in-app purchases
QR Code
- week3 Days trial$19.997 Days
- month3 Days trial$29.991 Month
Questions
Is IO ∙ Converter & Calculator free?
Is QR Code free?
Which has better reviews, IO ∙ Converter & Calculator or QR Code?
Do IO ∙ Converter & Calculator or QR Code have ads?
Which is updated more often, IO ∙ Converter & Calculator or QR Code?
Other comparisons
