# 干支計算電卓アプリ vs FirstSeed Planner

The clearest difference is price: FirstSeed Planner at Free against 干支計算電卓アプリ's $0.49. FirstSeed Planner also leads on update cadence (every 5 days vs every 18 months). 干支計算電卓アプリ's advantage is in-app purchases (none vs 3) and iOS requirement (13.0 vs 26.0). On ads and device support there is nothing between them.

FirstSeed Planner is free to download; 干支計算電卓アプリ costs $0.49 up front. FirstSeed Planner sells 3 in-app purchases, starting at $3.49 per month. 干支計算電卓アプリ asks for nothing beyond the download.

干支計算電卓アプリ ships an update every 18 months, FirstSeed Planner every 5 days. The most recent releases landed on November 8, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | 干支計算電卓アプリ | FirstSeed Planner |
| --- | --- | --- |
| Price | $0.49 | **Free** |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/firstseed-planner/id6802022248/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 74.2% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 18 months | **Every 5 days** |
| Monetization | — | Freemium |
| Size | 16 MB | 42 MB |
| Requires iOS | **13.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [kotobaz](https://appshunter.io/developer/1634727152) | [FirstSeed Inc](https://appshunter.io/developer/1321260277) |

## What reviewers say

### 干支計算電卓アプリ

[App page](https://appshunter.io/ios/app/etocalc/id6502873595)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### FirstSeed Planner

[App page](https://appshunter.io/ios/app/firstseed-planner/id6802022248)

This app combines your calendar, notes, and to-do lists onto a single daily page for a clear overview of your schedule and tasks. Seamlessly integrate with existing calendars and manage unfinished items by rescheduling them. Customize your view and export content in various formats.

**Highlights:** Unified daily view of calendar, notes, and tasks, Syncs with iCloud, Google, and Exchange calendars, Create notes with rich text formatting and checkboxes, Reschedule unfinished to-dos, Export pages as PDF or Markdown, Widgets for at-a-glance information, Customizable appearance and settings

**Features:** iPhone Duo support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $3.49 | per month |
| Pro Yearly | $29.99 | per year |
| Lifetime | $89.99 | one-time |


## Frequently asked questions

### Is 干支計算電卓アプリ free?

干支計算電卓アプリ costs $0.49, with no in-app purchases.

### Is FirstSeed Planner free?

FirstSeed Planner is free to download, with in-app purchases available.

### Do 干支計算電卓アプリ or FirstSeed Planner have ads?

Neither 干支計算電卓アプリ nor FirstSeed Planner shows ads.

### Which is updated more often, 干支計算電卓アプリ or FirstSeed Planner?

干支計算電卓アプリ ships an update every 18 months, and FirstSeed Planner every 5 days. Most recently, 干支計算電卓アプリ was updated on November 8, 2026 and FirstSeed Planner on November 10, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*