Comparison

しずおか子育て優待カード vs Diamond X2

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

しずおか子育て優待カード

Features
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本アプリは、静岡県が提供するアプリです。 紙のカードを持ち歩かなくても、このアプリのカード画像を「しずおか子 育て優待カード事業」の協賛店舗・施設で提示すると、そのお店独自 の子育て応援サービスが受けられます。 【主な機能】 ・優待カード画像の表示 (優待カードとして使用する場合は、お子さまの情報を登録してくだ さい。) ・協賛店舗・施設の検索  ※「しずおか子育て優待カード事業」は、18歳未満の子どもをお持ちの   保護者又は妊娠中の方が対象です。  ※お子様同伴での利用(妊娠中の方は併せて母子手帳の提示)をお 願い   しています。  ※「応援サービス」は、協賛店舗・施設の善意とご協力によるもので す。ルールを守ってみんなで気持ちよくカードを利用しましょう。 【留意事項】 ・端末の位置情報を利用します。

About

Diamond X2

Features
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This app is the successor to "Diamond X" and makes it easy to find the date and time of Diamond Fuji. Use GPS and web maps to create diamonds from any location. Diamonds other than Mount Fuji are also supported. Built-in data for over 1,200 mountains across Japan, as well as the Tokyo Metropolitan Government Building Observatory, Tokyo Tower, Tokyo Skytree, and more. Like "Yamaotaku for Mac (Yamac)," it takes into account the Earth's curvature and atmospheric refraction to provide highly accurate results. Supports Japanese and English display, automatically switching based on your iPhone's language setting. Location data files can be shared with Mac and Windows. Differences from "Diamond X" 1. Diamond-eligible locations are now checked in the location selection list. This allows you to quickly find diamond-eligible locations. Calculation speed has been significantly improved, allowing for stress-free use of this feature. 2. Mount Fuji can now be displayed from any location, regardless of whether diamonds are available. 3. The sun's altitude and shape reflect atmospheric refraction. (At low altitudes, the display will be compressed vertically.) 4. Sunrise and sunset times for a specified period can be displayed as a list. 5. Improved support for calculation errors. 6. Improved calculation accuracy. 7. Multi-core support significantly improves calculation processing performance. 8. Added a function to transfer calculation results to other apps. 9. The UTC offset corresponding to the viewpoint's time zone can now be set automatically or manually, enabling support for time zones other than Japan. 10. Help is now available for some functions. (Tap the ? icon to display it.) 11. Instructions for sharing files with your PC, such as myData, are now displayed. 12. Support for more languages ​​is now available. 13. Added an on/off switch for transparency. 14. Diamond offset display can now be selected between "meters" and "degrees." 15. Added a new switch for resetting settings.

Screenshots

しずおか子育て優待カード4 screens
Diamond X24 screens

Verdict

The call

The clearest difference is price: しずおか子育て優待カード at Free against Diamond X2's $4.99. しずおか子育て優待カード also leads on iOS requirement (11.1 vs 14.0). On update cadence, ads, in-app purchases and device support 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

CostPrice · In-app purchases · Ads · Monetization

しずおか子育て優待カード is free to download; Diamond X2 costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

しずおか子育て優待カード ships an update weekly, Diamond X2 every 4 days. The most recent releases landed on November 3, 2026 and November 8, 2026 respectively.

Scorecard2 real differences · 4 level
しずおか子育て優待カード versus Diamond X2: the parameters behind the verdict, then further details
Parameterしずおか子育て優待カードDiamond X2
PriceFree — better$4.99
Update frequencyWeeklyEvery 4 days — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS11.1 — better14.0
Further details — not scored
Size14 MB15 MB
Age rating4+4+
DeveloperShizuoka PrefectureICHIROU YONEYAMA

In-app purchases

None

しずおか子育て優待カード

No in-app purchases

None

Diamond X2

No in-app purchases

Questions

Is しずおか子育て優待カード free?
しずおか子育て優待カード is free to download, with no in-app purchases.
Is Diamond X2 free?
Diamond X2 costs $4.99, with no in-app purchases.
Do しずおか子育て優待カード or Diamond X2 have ads?
Neither しずおか子育て優待カード nor Diamond X2 shows ads.
Which is updated more often, しずおか子育て優待カード or Diamond X2?
しずおか子育て優待カード ships an update weekly, and Diamond X2 every 4 days. Most recently, しずおか子育て優待カード was updated on November 3, 2026 and Diamond X2 on November 8, 2026.

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