Comparison

Sayit vs Stelo

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

Head to head
About

Sayit

Features
Read full description

바쁜 일상 속, 오늘의 나를 돌아볼 시간이 필요하신가요? "내가 오늘 무엇을 느꼈더라?" "일기를 쓰고 싶은데, 막상 글을 쓰려니 어렵네..." Sayit은 당신의 하루를 꺼내줄 작고 따뜻한 질문을 건넵니다. 질문에 답하기만 하세요. 세이와 나누는 짧은 대화가 나만의 일기가 됩니다. 내가 놓쳤던 하루의 소중한 순간을 Sayit과 함께 적어봐요.

About

Stelo

This ambient stargazing companion offers a private night sky that grows daily. Connect new stars to draw and name your own constellations, creating a personal gallery. Special celestial events and accidental discoveries unlock astronomical insights.

Highlights
  • Daily new stars added to personal sky
  • Draw and name custom constellations
  • Gallery of created constellations
  • Special stars for celestial events
  • Accidental discovery of IAU constellations
  • Home screen widgets
Features
Read full description

A private night sky that fills itself, one star a day. Stelo is a slow, ambient stargazing companion. Every night, one to three new stars quietly fall into your personal night sky. Connect them with your finger to draw your own constellations, give them names, and watch a gallery slowly fill over weeks and months. There is no score. No timer. Nothing to lose. Just a quiet space that asks nothing of you, and gives back a sky that is yours alone. – – – HOW IT WORKS • Open the app. New stars from last night pulse gently to greet you. • Touch a star to begin a constellation. Drag your finger between stars to draw lines. Branches are allowed; loops are allowed; whatever feels right is right. • Tap save. Name the constellation, or leave it untitled. It joins your gallery. • Tomorrow, more stars will be waiting. SPECIAL NIGHTS The sky knows what day it is. On 24절기 (Korean solar terms), full moons, meteor-shower nights, and your birthday, special stars appear with a label and a warmer color. Catch them in a constellation for keepsake meaning. THE ALMANAC Without telling you what to draw, Stelo quietly compares your shapes to all 88 IAU constellations. If you accidentally rediscover Lyra, Orion, or Cassiopeia, a small banner appears: "Looks like Cygnus." Your discoveries gradually unlock the Almanac with mythology and historical notes — no quiz, no pressure. WIDGETS Place a small or medium widget on your home screen to keep your latest constellation glowing through the day. WHAT WE DO NOT DO • No ads. Ever. • No in-app purchases in v1. • No accounts. No sign-up. • No analytics, no tracking, no SDKs that phone home. • No leaderboards. No friends. No sharing pressure. No social. • No push notifications nagging you to come back. All your stars and constellations live on your device only. We literally cannot see them. WHO IT IS FOR • People who like Universe, Alto's Odyssey, Mountain, or any app that asks nothing • People who keep a one-line journal or use bedtime apps • People who like astronomy but find sky-map apps overwhelming • People who play idle games for the slow accumulation, not the optimization LANGUAGES English, 한국어, 日本語. Time zones and 24절기 calendar honored locally. – – – Stelo. The Esperanto word for "star." A night sky you can hold.

Screenshots

Sayit3 screens
Stelo4 screens

Verdict

The call

The clearest difference is iOS requirement: Sayit at 12.0 against Stelo's 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.

Scorecard1 real difference · 8 level
Sayit versus Stelo: the parameters behind the verdict, then further details
ParameterSayitStelo
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequency—Weekly
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.0 — better17.0
Further details — not scored
Size71 MB1 MB
Age rating4+4+
DeveloperChankook NaJIYULMOM

In-app purchases

None

Sayit

No in-app purchases

None

Stelo

No in-app purchases

Questions

Is Sayit free?
Sayit is free to download, with no in-app purchases.
Is Stelo free?
Stelo is free to download, with no in-app purchases.
Do Sayit or Stelo have ads?
Neither Sayit nor Stelo shows ads.

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