YKGA Calculator vs Tracelocker
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
YKGA Calculator
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A calculator app with a simple design. Big buttons that are easy to see and easy to press. Large text for great visibility and ease of use. A stress-free experience. Easy for everyone to use, from children to seniors. Features • Basic calculations • Available in more than 60 languages • Tap the result display to copy it to the clipboard
Tracelocker
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Tracelocker provides powerful self-certified registration for the supply and use of regulated goods via a secure Smartphone app. This data is notarised on the Blockchain, making the registered data instantly irrefutable. Have you purchased regulated goods with a TraceLocker QR code on it? Simply download the TraceLocker App and scan the QR code to report on how well the product worked for you. Are you a Retailer? Download the TraceLocker App and complete a Know Your Customer (KYC) check to gain access to advanced Retail features allowing you to create QR Codes, set best before dates and product URLs.
Screenshots
Verdict
The clearest difference is in-app purchases: YKGA Calculator at none against Tracelocker's 1. Tracelocker's advantage is ads (none vs shown) and update cadence (every 3 weeks vs every 2 months). On price 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. Tracelocker sells 1 one-off in-app purchase. YKGA Calculator asks for nothing beyond the download.
YKGA Calculator ships an update every 2 months, Tracelocker every 3 weeks. The most recent releases landed on November 11, 2026 and November 7, 2026 respectively.
| Parameter | YKGA Calculator | Tracelocker |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 17.0 | 13.1 — better |
| Further details — not scored | ||
| Size | 24 MB | 32 MB |
| Age rating | 17+ | 4+ |
| Developer | Yuta Kobayashi | Abbey Technology GmbH |
In-app purchases
YKGA Calculator
No in-app purchases
Tracelocker
- User Report (Basic)$0.99
Questions
Is YKGA Calculator free?
Is Tracelocker free?
Do YKGA Calculator or Tracelocker have ads?
Which is updated more often, YKGA Calculator or Tracelocker?
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