Comparison

ETC Records vs Diamond X2

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

Head to head
About

ETC Records

Access your ETC usage history, view it on a calendar, and generate PDF reports. Data is stored locally for easy access, and a widget provides quick record viewing. Unlock full functionality with a one-time purchase.

Highlights
  • Login to ETC Riyou Shoukai Service
  • View usage in calendar format
  • Generate PDF reports
  • Save data within the app
  • Widget for quick record viewing
  • Unlock full features with purchase
Features
Read full description

This app allows you to log in to the "ETC Riyou Shoukai Service" site within the app, read records, and generate various PDF files. The feature is that you can see the days you used ETC in a calendar format. You can also display the period-month by setting the separator day of the month. Data is saved within the app so that you can view previous records. There is also a widget that allows you to view records. Initially, you can only view it a limited number of times, but once you purchase the feature, the restriction will be removed.

About

Diamond X2

Features
Read full description

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

ETC Records4 screens
Diamond X24 screens

Verdict

The call

The clearest difference is price: ETC Records at Free against Diamond X2's $4.99. Diamond X2's advantage is in-app purchases (none vs 1) and update cadence (every 4 days vs every 9 days). On ads, device support and iOS requirement there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

ETC Records is free to download; Diamond X2 costs $4.99 up front. ETC Records sells 1 one-off in-app purchase. Diamond X2 asks for nothing beyond the download.

UpkeepUpdate frequency

ETC Records ships an update every 9 days, Diamond X2 every 4 days. The most recent releases landed on October 6, 2026 and October 25, 2026 respectively.

Scorecard3 real differences Β· 5 level
ETC Records versus Diamond X2: the parameters behind the verdict, then further details
ParameterETC RecordsDiamond X2
PriceFree β€” better$4.99
Positive reviews53.8% of reviewsβ€”
Update frequencyEvery 9 daysEvery 4 days β€” better
AdsNoNo
In-app purchasesYesNo β€” better
MonetizationFree with in-app purchasesβ€”
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.014.0 β€” better
Further details β€” not scored
Size15 MB15 MB
Age rating4+4+
DeveloperShinichi SUGIURAICHIROU YONEYAMA

In-app purchases

1 purchases

ETC Records

One-time1
  • Remove Blur$2.99
None

Diamond X2

No in-app purchases

Questions

Is ETC Records free?
ETC Records is free to download, with in-app purchases available.
Is Diamond X2 free?
Diamond X2 costs $4.99, with no in-app purchases.
Do ETC Records or Diamond X2 have ads?
Neither ETC Records nor Diamond X2 shows ads.
Which is updated more often, ETC Records or Diamond X2?
ETC Records ships an update every 9 days, and Diamond X2 every 4 days. Most recently, ETC Records was updated on October 6, 2026 and Diamond X2 on October 25, 2026.

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