# 卒業年度・年齢・西暦・和暦 ・干支早見表 vs TREBASE

The clearest difference is update cadence: TREBASE at every 4 days against 卒業年度・年齢・西暦・和暦 ・干支早見表's monthly. 卒業年度・年齢・西暦・和暦 ・干支早見表's advantage is iOS requirement (13.0 vs 26.4). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

卒業年度・年齢・西暦・和暦 ・干支早見表 ships an update monthly, TREBASE every 4 days. The most recent releases landed on October 19, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | 卒業年度・年齢・西暦・和暦 ・干支早見表 | TREBASE |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 96.9% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 4 days** |
| Monetization | Free | — |
| Size | 27 MB | 54 MB |
| Requires iOS | **13.0** | 26.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Naoyuki Rikiji](https://appshunter.io/developer/1465757389) | [TREBASE](https://appshunter.io/developer/6777484159) |

## What reviewers say

### 卒業年度・年齢・西暦・和暦 ・干支早見表

[App page](https://appshunter.io/ios/app/id1561089214)

Easily calculate graduation years, ages, and convert between Gregorian and Japanese eras. Customize for early or late birthdays, or even years of repeating a grade. All information is accessible without any advertisements.

**Highlights:** Calculate graduation years, Convert between Gregorian and Japanese eras, Determine age, Customize for birth timing, Adjust for repeating a grade, No advertisements

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

**In-app purchases:** none


### TREBASE

[App page](https://appshunter.io/ios/app/trebase/id6777484157)

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

**In-app purchases:** none


## Frequently asked questions

### Is 卒業年度・年齢・西暦・和暦 ・干支早見表 free?

卒業年度・年齢・西暦・和暦 ・干支早見表 is free to download, with no in-app purchases.

### Is TREBASE free?

TREBASE is free to download, with no in-app purchases.

### Do 卒業年度・年齢・西暦・和暦 ・干支早見表 or TREBASE have ads?

Neither 卒業年度・年齢・西暦・和暦 ・干支早見表 nor TREBASE shows ads.

### Which is updated more often, 卒業年度・年齢・西暦・和暦 ・干支早見表 or TREBASE?

卒業年度・年齢・西暦・和暦 ・干支早見表 ships an update monthly, and TREBASE every 4 days. Most recently, 卒業年度・年齢・西暦・和暦 ・干支早見表 was updated on October 19, 2026 and TREBASE on October 14, 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.*