Comparison

Calphace vs SourceCanvas

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

Head to head
About

Calphace

Features
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Calendar + Photo + Face = Calphace! Calphace is an application that generates a composite image of a calendar on a photo of your choice and sets it on the photos watch face of your Apple Watch. There are times when you just want to easily check your calendar on your Apple Watch! Some calendar apps allow you to check your calendar, but it takes several taps. In such cases, if you set the image generated by Calphace as a photos watch face, you can check the calendar just by lifting your wrist. *Calphace does not display a calendar with complications, but only generates a composite image of a calendar,  so it is not possible to check the schedule, etc. entered with the iPhone calendar application. Please understand. ・You can adjust the position and size of the image while checking it in the preview. ・You can select the calendar to be created from the current month and the following month. ・The color of each calendar letter (year, month, weekday, Saturday, and holiday) can be freely selected. ・You can select the starting day of the month or day of the week for the calendar. ・The year display format can be selected, such as 2021, Reiwa 3, etc. ・Month display format can be selected, such as September, SEP, etc. ・Select the display format for the day of the week, such as Mon, MON, etc. ・Japanese national holidays are supported. ・URL scheme support (calphace://) *Starting with watchOS 11, you can adjust the position of the watch using the following steps. If it overlaps with the calendar, please adjust it accordingly. ・Open the Watch app on your iPhone. ・Select the photo watch face you want to adjust from "My Watch" and "My Faces". ・Tap the "n photos" button next to "Select Photos" under "Content". ・Tap the photo you want to adjust and adjust the layout. ・Tap "Save" in the top-right corner.

About

SourceCanvas

Read full description

SourceCanvas is a local editor for SVG, Mermaid, Graphviz DOT, and PlantUML diagrams on iPhone, iPad, Mac, and Apple Vision Pro. Start free • Create, edit, and preview SVG diagrams. • Open, edit, and save source files in all four formats. Your documents remain accessible without a purchase. • Try each non-SVG renderer once for 10 continuous minutes per device. Its timer starts after the first successful render. Lifetime Pro • Unlock explicit SVG, PNG 1×/2×/3×, and vector PDF exports. • Use nonblank templates and full Mermaid, Graphviz, and PlantUML previews after each trial. • On Mac, use the MCP Agent and native AI Preview with compatible local AI hosts. Lifetime Pro is a one-time in-app purchase, not a subscription. Customers who obtained the paid app before the free transition automatically keep equivalent Legacy Pro access. Purchase directly on iPhone, iPad, Mac, or Apple Vision Pro. Restore on another device with the same Apple Account. Rendering runs locally. No account or remote rendering service is required. External SVG resources are blocked unless you choose to allow them.

Screenshots

Calphace2 screens
SourceCanvas4 screens

Verdict

The call

The clearest difference is in-app purchases: SourceCanvas at none against Calphace's 3. SourceCanvas also leads on ads (none vs shown) and device support (4 vs 1). On price, update cadence 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Calphace sells 3 one-off in-app purchases. SourceCanvas asks for nothing beyond the download.

UpkeepUpdate frequency

Calphace ships an update monthly, SourceCanvas every 3 weeks. The most recent releases landed on October 7, 2026 and October 5, 2026 respectively.

Scorecard3 real differences · 3 level
Calphace versus SourceCanvas: the parameters behind the verdict, then further details
ParameterCalphaceSourceCanvas
PriceFreeFree
Update frequencyMonthlyEvery 3 weeks — better
AdsYesNo — better
In-app purchasesYesNo — better
DevicesiPhoneiPhone, iPad, Mac, Vision Pro — better
Requires iOS17.0 — better18.6
Further details — not scored
Size7 MB22 MB
Age rating4+4+
DeveloperAkihiro Usui音建 何

In-app purchases

3 purchases

Calphace

One-time3
  • Snack-Sized Tip$0.49
  • Coffee-Sized Tip$1.99
  • Lunch-Sized Tip$3.99
None

SourceCanvas

No in-app purchases

Questions

Is Calphace free?
Calphace is free to download, with in-app purchases available.
Is SourceCanvas free?
SourceCanvas is free to download, with no in-app purchases.
Do Calphace or SourceCanvas have ads?
Calphace shows ads; SourceCanvas does not.
Which is updated more often, Calphace or SourceCanvas?
Calphace ships an update monthly, and SourceCanvas every 3 weeks. Most recently, Calphace was updated on October 7, 2026 and SourceCanvas on October 5, 2026.

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