High Precision Calc vs Custom QR
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
High Precision Calc
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The high-precision calculator supports up to 100,000 precision calculations, rich system functions, variable management, and complex dimension operations. 【High-precision calculation】 Support up to 100,000 precision calculation, and the calculation accuracy can be dynamically modified. 【Variable Management】 Provide variable storage function, which can store intermediate calculation results, and import and export with one click when applying, so as to easily grasp the calculation results. 【System Functions】 Support rich system functions, covering basic mathematical applications, including trigonometric functions, exponential functions, basic mathematical functions, etc. 【Complex number operation】 Complex dimension operations are supported, and system functions are compatible with complex number operations.
Custom QR
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Custom QR is a useful application for creating customizable QR codes. Design, generate, save and share your QR codes. *Design Unique QR Codes: Craft QR codes with distinctive designs by selecting colors and shapes for QR components. *Save Without Limits: No restrictions, save as many custom QR codes as you need. *Enjoy all features for free with no subscriptions or hidden fees.
Screenshots
Verdict
The clearest difference is price: Custom QR at Free against High Precision Calc's $1.99. High Precision Calc's advantage is ads (none vs shown) and update cadence (fortnightly vs every 2 months). On in-app purchases 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
Custom QR is free to download; High Precision Calc costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
High Precision Calc ships an update fortnightly, Custom QR every 2 months. Both last shipped on November 3, 2026.
| Parameter | High Precision Calc | Custom QR |
|---|---|---|
| Price | $1.99 | Free — better |
| Update frequency | Fortnightly — better | Every 2 months |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPod |
| Requires iOS | 13 — better | 14.0 |
| Further details — not scored | ||
| Size | 37 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | 嘉欣 胡 | Carolina Coronado |
In-app purchases
High Precision Calc
No in-app purchases
Custom QR
No in-app purchases
Questions
Is High Precision Calc free?
Is Custom QR free?
Do High Precision Calc or Custom QR have ads?
Which is updated more often, High Precision Calc or Custom QR?
Other comparisons
