Comparison

Gengou Lib vs Doc Align

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

Head to head
About

Gengou Lib

Quickly convert between Japanese era names and Christian era years. Features include era and year searching, period and era pickers, and the ability to display the current year in either system. Texts can be shown 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
  • Multi-language text display
Features
Read full description

"Gengou Lib." 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

Doc Align

Read full description

Key Features - Scan documents, notes, OA boards, blackboards, and photos - Import photos saved on your iPhone - Automatically detect document edges - Auto-correct distortion and straighten images - Extract text from images (OCR) - Share as JPEG or PDF - Share extracted text only What is Doc Align? Doc Align automatically corrects distortions and converts captured or imported images into clean, straight PDFs or JPEGs. It works like a scanner, and with OCR, you can extract text for work, study, or organization. Sharing is simple — send PDFs or images instantly. You can also import photos saved on your iPhone, making it easy to use anytime. Everything is done within the app for smart document management at your fingertips. Useful for - Preparing neat documents for submission - Saving whiteboard notes or board writings - Organizing business cards or receipts into PDFs - Extracting text from images for reuse

Screenshots

Gengou Lib4 screens
Doc Align4 screens

Verdict

The call

The clearest difference is in-app purchases: Gengou Lib at none against Doc Align's 1. Gengou Lib also leads on iOS requirement (13.0 vs 15.0). Doc Align's advantage is update cadence (monthly vs every 61 months). On price, ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Doc Align sells 1 one-off in-app purchase. Gengou Lib asks for nothing beyond the download.

UpkeepUpdate frequency

Gengou Lib ships an update every 61 months, Doc Align monthly. The most recent releases landed on August 13, 2026 and September 2, 2026 respectively.

Scorecard3 real differences · 7 level
Gengou Lib versus Doc Align: the parameters behind the verdict, then further details
ParameterGengou LibDoc Align
PriceFreeFree
Rating2.5 (2 ratings) — better—
Positive reviews84.5% of reviews—
Number of ratings2 — better—
Update frequencyEvery 61 monthsMonthly — better
AdsYesYes
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better15.0
Further details — not scored
Size6 MB18 MB
Age rating4+4+
DeveloperMasayuki AkamatsuKazuhisa Kobayashi

In-app purchases

None

Gengou Lib

No in-app purchases

1 purchases

Doc Align

One-time1
  • Remove Ads$4.99

Questions

Is Gengou Lib free?
Gengou Lib is free to download, with no in-app purchases.
Is Doc Align free?
Doc Align is free to download, with in-app purchases available.
Do Gengou Lib or Doc Align have ads?
Both Gengou Lib and Doc Align show ads.
Which is updated more often, Gengou Lib or Doc Align?
Gengou Lib ships an update every 61 months, and Doc Align monthly. Most recently, Gengou Lib was updated on August 13, 2026 and Doc Align on September 2, 2026.

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