How Old ? (Age) vs 和暦変換
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
How Old ? (Age)
Calculate your exact age based on your birth year. The app displays your age after your birthday and offers an option to show age before your birthday. Its simple design focuses on providing a clear age calculation.
- Calculate age from birth year
- Display age after birthday
- Display age before birthday
- Simple and focused design
- iPhone and iPod compatible
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It understands at once how old it is from year of birth. The screen is only scrolled until the corresponding one is chosen from four tabs under the screen, and a born year is displayed. It is "Age after the birthday. " to be displayed. Please displayed age "One years old" pull it for "Before the birthday". It became a very simple design as a result of applying the focus to examine the age very early. We will also prepare "Age plus (pay version)" that adds [Japanese 'Eto'], [Years from each Japanese 'Wareki'], [Leap year], and [The age is examined with Wikipedia] functions besides "Age".
和暦変換
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It is an application to convert the A.D. and Japanese Era. When you select the year from Showa, Heisei, or Reiwa, the corresponding year is displayed. When the era has not been decided yet, it will be displayed as "----".
Screenshots
Verdict
The clearest difference is ads: How Old ? (Age) at none against 和暦変換's shown. How Old ? (Age) also leads on iOS requirement (6.0 vs 17.6). 和暦変換's advantage is update cadence (every 9 days vs every 2 months). On price, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
How Old ? (Age) ships an update every 2 months, 和暦変換 every 9 days. The most recent releases landed on October 23, 2026 and October 29, 2026 respectively.
| Parameter | How Old ? (Age) | 和暦変換 |
|---|---|---|
| Price | Free | Free |
| Rating | 1.9 (23 ratings) — better | — |
| Positive reviews | 62.7% of reviews | — |
| Number of ratings | 23 — better | — |
| Update frequency | Every 2 months | Every 9 days — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 6.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 1 MB | 114 MB |
| Age rating | 4+ | 4+ |
| Developer | KS Planning Inc. | Hiroyuki Nishijima |
In-app purchases
How Old ? (Age)
No in-app purchases
和暦変換
No in-app purchases
Questions
Is How Old ? (Age) free?
Is 和暦変換 free?
Do How Old ? (Age) or 和暦変換 have ads?
Which is updated more often, How Old ? (Age) or 和暦変換?
Other comparisons
