Comparison

postin vs サッとMe

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

Head to head
About

postin

Features
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A little love, in a postcard. “Thank you for today.” “I can’t wait to see you again.” With postin, turn your favorite photos and a few heartfelt words into a digital postcard for the person you love. Share it through LINE. Your partner can open it in their browser—no app download or account needed. After a date. On a day you wish you could be together. For a birthday or anniversary. Give them a little something to open, smile at, and cherish. ■ Make it yours Add a photo, write a message, and decorate your postcard with handwriting, drawings, and stickers. A stamp is already in place, so you can start creating right away. You can swap it for another one, too. ■ Share through LINE Create a link to your postcard and send it through LINE. Your partner simply opens the link to view the card in their browser—even if they don’t use postin. ■ Open now, or save the surprise Let your partner open the card right away, or choose the date and time it becomes available. Make it a surprise for midnight on their birthday or the morning of your anniversary. Note: Scheduling sets when the postcard can be opened. It does not automatically send a LINE message. Please share the link with your partner in advance. ■ Try your first postcard Create and send a postcard in the tutorial without using a stamp. Start with a photo you love and something you’ve been meaning to say. ■ Stamps and subscriptions Regular postcard sending and share-link creation use stamps. Additional stamps are available through in-app purchases. An optional subscription includes unlimited sending, subscriber-exclusive stationery, and desk backgrounds. Receiving and viewing postcards is free. Subscriptions renew automatically unless canceled at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours before the current period ends. You can manage or cancel your subscription in your App Store account settings. See the in-app purchase screen for pricing and subscription periods. Terms of Service: https://honey-cucumber-463.notion.site/postin-3adcc260b87780bc9705ff7010973037

About

サッとMe

Features
Read full description

An SNS where both reading and writing take just 10 seconds 【Satto Me】 In a world overflowing with information, we face daily exhaustion—so much so that terms like "SNS fatigue" and "digital detox" have emerged. To lighten this burden, we developed 【Satto Me】, an ultra-short-form SNS (max 60 characters) designed for quick reading and quick writing. ■ Ultra-short-form SNS (Max 60 characters) The length is just right—perfect for casually posting anything from "daily musings" to "thoughts about your favorite idol"! For example: "It's getting hotter lately... maybe I'll stop by the convenience store on my way home and grab some ice cream!" That’s 40 characters; with 20 more to spare, you can actually write quite a bit. ■ Replies limited to "24 hours" after posting Free yourself from the stress of being hounded by notifications for old posts! Once 24 hours have passed since the post, no further replies will be received. ■ Notifications categorized by action so nothing gets missed It’s easy to miss things when you’re flooded with follows, reactions, and replies. Satto Me organizes notifications by action type, making it harder to overlook important updates. ■ Share feelings with "Reactions" instead of just "Likes" A reaction feature that lets you attach various emojis instead of a standard "Like"! Quickly convey feelings that a simple "Like" can't express. ■ View posts filtered by "Reaction type" Reactions aren't just for sharing feelings in the moment; you can also review your posts later based on the reactions they received! ■ Satto Me's Key Feature ①: "Satto Tags" Traditional hashtags have downsides due to their excessive freedom—for instance, users of "#SattoMe" and "#Sattome" couldn't interact with each other. "Satto Tags" aims to unify tags so you never miss out on valuable topics or interactions! ■ Satto-Me Key Feature #2: "Tag Filters" Select tags that interest you and switch between views on your timeline! We offer a wide variety of unique tags—from staples like "Anime" and "Gourmet" to trending topics like "VTubers" and "Minecraft," and even niche ones like "Oogiri" (comedy prompts) and "Morse Code"! ■ Satto-Me Key Feature #3: "Multi-Column View" (PC Only) With the multi-column feature, you can check multiple timelines simultaneously without switching screens! It may be a small-scale social network right now, but once the posts start rolling in, this feature is sure to become a game-changer! ■ Only "You" Can See Your Following/Followers For those who feel embarrassed or simply don't want others to see their list of people they follow or their followers, Satto-Me ensures that only *you* can view this information. ■ How to Enjoy Satto-Me (Our Values) "Respect for Ultra-Short Posts": Since character counts are limited, let's strive for polite expressions that show consideration for others. "Diverse Values": Treat people with different opinions or backgrounds with respect. "Positive Empathy": Prioritize constructive opinions and empathy over aggressive rebuttals. *Satto-Me prohibits use by individuals under the age of 13. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

postin4 screens
サッとMe4 screens

Verdict

The call

The clearest difference is in-app purchases: サッとMe at none against postin's 3. サッとMe also leads on iOS requirement (16.4 vs 26.0). postin's advantage is update cadence (every 2 days vs every 11 days). 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. postin sells 3 in-app purchases, starting at $1.99 per month. サッとMe asks for nothing beyond the download.

UpkeepUpdate frequency

postin ships an update every 2 days, サッとMe every 11 days. Both last shipped on October 25, 2026.

Scorecard3 real differences · 3 level
postin versus サッとMe: the parameters behind the verdict, then further details
ParameterpostinサッとMe
PriceFreeFree
Update frequencyEvery 2 days — betterEvery 11 days
AdsNoNo
In-app purchasesYesNo — better
DevicesiPhoneiPhone, iPad — better
Requires iOS26.016.4 — better
Further details — not scored
Size47 MB37 MB
Age rating4+17+
Developerkeishi yokoilenlino

In-app purchases

3 purchases

postin

Subscriptions2
  • Subscription Plan (Monthly)$1.991 Month
  • Annual Subscription$19.991 Year
One-time1
  • 5 Stamps$0.29
None

サッとMe

No in-app purchases

Questions

Is postin free?
postin is free to download, with in-app purchases available.
Is サッとMe free?
サッとMe is free to download, with no in-app purchases.
Do postin or サッとMe have ads?
Neither postin nor サッとMe shows ads.
Which is updated more often, postin or サッとMe?
postin ships an update every 2 days, and サッとMe every 11 days. Most recently, postin was updated on October 25, 2026 and サッとMe on October 25, 2026.

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