ConfiCheck vs X CalcKits
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
ConfiCheck
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ConfiCheck contains information about upcoming Java related conferences. If you either attend or speak at a conference, you can select it per conference. You can select 'All' conferences and it will show you all available conferences this year with the current month opened. When selecting 'Speaking', the app will only show you the conference where you will speak at. If a conference 'Call for Papers' is open, you will see a specific row that says 'CFP' that also contains the link to the call for papers and also the date the call for paper will end. This date will be colored depending on the days the cfp is still open. Each conference entry also contains a link to the website of the conference and a link that will open the location of the conference in the Apple Maps application. You can add your speaker info like name, bluesky account, bio and experiences (e.g. conferences you have spoken at) and share this information which is useful in the CfP process. The app allows you to add all your available sessions and keep track on where you proposed a session and what the state of the session is. You can also add conferences to your calendar.
X CalcKits
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This newly developed multi-functional calculator breaks the limitations of traditional calculators that only support basic four arithmetic operations. It integrates a full range of practical functions including scientific calculation, unit conversion, numeral system conversion, mortgage/personal income tax estimation, and real-time exchange rate calculation.
Screenshots
Verdict
The clearest difference is ads: ConfiCheck at none against X CalcKits's shown. ConfiCheck also leads on update cadence (weekly vs every 4 months). X CalcKits's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 26). On price and in-app purchases there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
ConfiCheck ships an update weekly, X CalcKits every 4 months. The most recent releases landed on November 8, 2026 and November 5, 2026 respectively.
| Parameter | ConfiCheck | X CalcKits |
|---|---|---|
| Price | Free | Free |
| Update frequency | Weekly โ better | Every 4 months |
| Ads | No โ better | Yes |
| In-app purchases | No | No |
| Devices | iPhone | iPhone, iPad, iPod โ better |
| Requires iOS | 26 | 13.0 โ better |
| Further details โ not scored | ||
| Size | 2 MB | 31 MB |
| Age rating | 4+ | 4+ |
| Developer | Gerrit Grunwald | Singxi Limited |
In-app purchases
ConfiCheck
No in-app purchases
X CalcKits
No in-app purchases









