Comparison

Gengou vs Houji

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

Head to head
About

Gengou

Quickly convert between Japanese era names and Christian era years. Features include era and year searches, period and era pickers, and the ability to display text in Japanese or English.

Highlights
  • Era and Year Search
  • Period Picker
  • Era Picker
  • Christian Era Year Picker
  • Japanese Era Year Picker
  • Show This Year Button
  • Dual Language Support (JP/EN)
Features
Read full description

"Gengou" is a quick reference of the Japanese era system. This application has functions as below. - Era and Year Search - Period picker - Era picker - Christian era year picker - Japanese era year picker - Show this year button - Texts can be shown in Japanese or English independently of the default language setting. - Application badge can show this year number in the Japanese era or the Christian era. The Japanese era system identifies a year by the combination of the era name (Gengou or Nengou) and the year number within the era. For example, A.D. 2001 is Heisei 13. Please note that two Gengou schemes were used in Parallel from 1331 to 1392 during Nanboku-chō period. This application would be very useful if you are working with the governments, municipal offices and/or certain companies in Japan.

About

Houji

Features
Read full description

houji is japanese custom. This App calculate houji_days.

Screenshots

Gengou4 screens
Houji4 screens

Verdict

The call

The clearest difference is update cadence: Houji at every 7 months against Gengou's every 42 months. Gengou's advantage is device support (3 vs 1) and price ($0.99 vs $1.99). On ads and in-app purchases 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

Gengou costs $0.99 and Houji $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Gengou ships an update every 42 months, Houji every 7 months. The most recent releases landed on September 26, 2026 and September 22, 2026 respectively.

Scorecard4 real differences · 6 level
Gengou versus Houji: the parameters behind the verdict, then further details
ParameterGengouHouji
Price$0.99 — better$1.99
Rating3.8 (4 ratings) — better—
Positive reviews66.1% of reviews—
Number of ratings4 — better—
Update frequencyEvery 42 monthsEvery 7 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS13.0 — better16.1
Further details — not scored
Size3 MB4 MB
Age rating4+4+
DeveloperMasayuki Akamatsuher0.jp

In-app purchases

None

Gengou

No in-app purchases

None

Houji

No in-app purchases

Questions

Is Gengou free?
Gengou costs $0.99, with no in-app purchases.
Is Houji free?
Houji costs $1.99, with no in-app purchases.
Do Gengou or Houji have ads?
Neither Gengou nor Houji shows ads.
Which is updated more often, Gengou or Houji?
Gengou ships an update every 42 months, and Houji every 7 months. Most recently, Gengou was updated on September 26, 2026 and Houji on September 22, 2026.

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