Comparison

GedNavi vs StudyStamp

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

Head to head
About

GedNavi

Features
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영재내비(GedNavi)는 영재 교육 입시를 준비하는 학생과 학부모를 위한 입시 플랫폼입니다. 주요 기능: - 15대 핵심 역량 분석 및 대시보드 - 영재원/영재학교/과학고/전국자사고 DB - AI 맞춤 입시 트랙 진단 - 학교별 입시 요강 제공

About

StudyStamp

Features
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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 · Fill a month with no gaps and the seal turns gold. One day missed is silver, two is bronze ■ 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 ■ 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

GedNavi4 screens
StudyStamp4 screens

Verdict

The call

The clearest difference is update cadence: StudyStamp at every 3 days against GedNavi's weekly. GedNavi's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 17.0). On price, 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

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

UpkeepUpdate frequency

GedNavi ships an update weekly, StudyStamp every 3 days. The most recent releases landed on October 11, 2026 and October 2, 2026 respectively.

Scorecard3 real differences · 3 level
GedNavi versus StudyStamp: the parameters behind the verdict, then further details
ParameterGedNaviStudyStamp
PriceFreeFree
Update frequencyWeeklyEvery 3 days — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.0 — better17.0
Further details — not scored
Size22 MB8 MB
Age rating4+4+
DeveloperJUN HO SINYoungBeom Seo

In-app purchases

None

GedNavi

No in-app purchases

None

StudyStamp

No in-app purchases

Questions

Is GedNavi free?
GedNavi is free to download, with no in-app purchases.
Is StudyStamp free?
StudyStamp is free to download, with no in-app purchases.
Do GedNavi or StudyStamp have ads?
Neither GedNavi nor StudyStamp shows ads.
Which is updated more often, GedNavi or StudyStamp?
GedNavi ships an update weekly, and StudyStamp every 3 days. Most recently, GedNavi was updated on October 11, 2026 and StudyStamp on October 2, 2026.

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