Comparison

일백제 vs StudyStamp

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

Head to head
About

일백제

Features
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Ilbaekje Police is a study app for the Korean National Police officer (Sungyeong) open recruitment written exam. The written exam has three subjects — Constitutional Law, Criminal Law, and Police Studies. All three test statutes and case law, so accurate memorization is the score. - 999 past questions from exams after the 2022 subject reform (free) - Statute cloze memorization across 5 acts, 262 articles (free) - Practice exams: 100 questions in 100 minutes, per-subject scoring (in-app purchase) English and Korean history are not written subjects for this exam; they are replaced by certification scores.

About

StudyStamp

Features
Read full description

An app where your streak isn't a checkmark. It's the photo you took that day and the time you studied. When you finish studying, take one photo of your book. Pick the time, and the day's record is done. No timer to start and stop. No sign-up. Your calendar fills with your own photos, and the days you've kept going add up. ■ One photo is one day's record · Shoot in the app or pick from your album · Set the time with quick buttons, then adjust in 5-minute or 1-minute steps · A one-line "How far did you get?" note is there only when you want it · If a photo from your album has a capture date, the record is set to that date · You can add records to past days, too ■ The streak comes first · Your streak is the biggest thing on screen when you open the app · Save a record and watch yesterday's 7 days become today's 8, right there · Skim the last 7 days in a single row · Falling short of your daily goal doesn't break the streak ■ A calendar filled with your photos · Each day shows the last photo you took that day · You won't look back at a calendar filled with color, but you will at one filled with your photos · The Album tab lays out a month of photos as tiles ■ One day or one month, as a single image · Turn today's record into a card you can save or send anywhere · For today's card, pick one of five layouts, and leave your profile off it if you'd rather · The month you are looking at in Calendar becomes one image, grid and all · The days you recorded, the time you studied, and that month's recap go on it ■ Set just one daily goal · Monthly and yearly goals are calculated for you · Before you change a goal, see how the results would change · A history of changes shows which goal applied from when ■ See your records from several angles · Monthly: a filled-in grid, total time, and a chart by weekday · Yearly: a chart by month, one photo per month, and the year's total · When a month ends, leave a short recap of it ■ Tag a record, find it later · Add up to five tags to a record, when you save it or when you edit it later · Type in the search field at the top of Album and only the records whose memo or tags match are left ■ Fill in past days · Yesterday's photo or last week's photo becomes that day's record · Album photos are pre-set to their capture date · Import up to 50 photos you already have from Settings. Each one lands on the day it was taken · Studied past midnight? Change the date to the day before, then save ■ Up to three people on one iPhone · Everyone keeps their own records · Tap the profile at the top to switch ■ Two panes on iPhone Duo · Unfold it and hold the inner display sideways, and each of the five tabs splits into left and right panes · Today lists "Previous 7 days" in the left pane, one row per day · Calendar shows last month beside this month, and Stats shows the previous period beside the current one · Album and Settings open the photo or screen you choose in the right pane · Folded or held upright, it shows a single screen, just like other iPhone models ■ Pick how the app looks · Set your iPhone to Dark Mode and the app turns dark with it · Or pick System, Light, or Dark yourself in Settings · Your choice stays on this device, even after you close the app ■ No account, no server · No sign-up. We never ask for your name or email · Your records and photos stay on this device. The app sends nothing anywhere · If iCloud Backup is on for your iPhone, your records are included and follow you to a new device · No ads. Not even the developer can see what or how much you studied Made for people who study with books every day and want to keep a trace of it: exam candidates, people preparing for certifications, and steady readers.

Screenshots

일백제4 screens
StudyStamp4 screens

Verdict

The call

The clearest difference is update cadence: StudyStamp at every 4 days against 일백제's every 9 days. 일백제's advantage is iOS requirement (15.1 vs 17.0). On price, ads, 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

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

일백제 ships an update every 9 days, StudyStamp every 4 days. The most recent releases landed on October 31, 2026 and October 29, 2026 respectively.

Scorecard2 real differences · 4 level
일백제 versus StudyStamp: the parameters behind the verdict, then further details
Parameter일백제StudyStamp
PriceFreeFree
Update frequencyEvery 9 daysEvery 4 days — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPod — betteriPhone
Requires iOS15.1 — better17.0
Further details — not scored
Size41 MB8 MB
Age rating4+4+
DeveloperDEOKLYONG MOONYoungBeom Seo

In-app purchases

None

일백제

No in-app purchases

None

StudyStamp

No in-app purchases

Questions

Is 일백제 free?
일백제 is free to download, with no in-app purchases.
Is StudyStamp free?
StudyStamp is free to download, with no in-app purchases.
Do 일백제 or StudyStamp have ads?
Neither 일백제 nor StudyStamp shows ads.
Which is updated more often, 일백제 or StudyStamp?
일백제 ships an update every 9 days, and StudyStamp every 4 days. Most recently, 일백제 was updated on October 31, 2026 and StudyStamp on October 29, 2026.

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