Seamless Calendar User Reviews

Customer Experience

Positive experience74.8% of reviews
Neutral9.7% of reviews
Negative experience15.5% of reviews

~ Based on 103 written reviews from the US App Store.

What users say

Is Seamless Calendar Safe?

Seamless Calendar - Planner appears safe based on user ratings. AppsHunter Safety Score for Seamless Calendar is 93/100.

This assessment is based on 662 user ratings, with an App Store average of 4.7/5.

Safety Analysis

94.6% of ratings point to a safe experience
2.3% of ratings suggest some concerns
3.2% of ratings point to a risky experience

~ Based on 662 App Store ratings for Seamless Calendar.

Is Seamless Calendar Legit?

Seamless Calendar - Planner appears to be a legitimate app. AppsHunter Legitimacy Score for Seamless Calendar is 85/100.

Based on 85 of 100 points across 7 verification signals from App Store and developer data.

Top reviews

Can’ remove or change attached picture

The app can attached picture via tapping the selected data. After that, you can’t remove or change the one you selected. Does it have any solution?

Response from developer

On the event edit screen, please swipe left on the attached data. A delete button will appear. Thank you for your cooperation.

Hands down the best calendar app.

I’ve been using this app for 2 years now. This app has it all plus it’s not subscription based! Syncs perfectly with the iOS calendar. This is the best calendar app out there.

Super

diese Kalender ist einfach super und der Support ist wirklich erstklassig! wenn ich eine Frage habe oder einem Wunsch äußere, bekomme ich noch am selben Tag eine Antwort. und am nächsten Tag ist mein Wunsch schon umgesetzt support ist wirklich super.

全体的に満足ですが…

全体的に良いです。
あとは、祝日の他に日本の行事が明記されてほしいです。
母の日や七五三等です。

What day is it?

Bestt calandarr ive evr used

J.Jan

Super,
Weiter so 👍🏻

Awesome calender

Love it

予定のコピーが出来ない

シンプルで見安く、使いやすいカレンダーなのですが、唯一不便な点が、予定のコピーが出来ない点です。
カレンダーアプリとしては基本的な機能だと思うのですが、備わっていないのでしょうか。

履歴から入力がほしい

Staccalからの移行ですが、シームレス表示できる非常に良いカレンダーアプリです。
前に入力した履歴から予定を入れられればこれ以上ないのですが、その機能が見つかりませんでした。

Saddened

This calendar has always been my favorite. Now I’m sad there is a fee.

Events disappeared

My events got disappeared overnight. Not sure how to retrieve them. I have iPhone 14Plus

Great til it wasn’t

Unable to save or change events lately. Best calendar otherwise. Will give it one more month

Response from developer

We have found that depending on the type of iPhone, changes to events in the weekly view screen may be slow to reflect. Please try editing events in the monthly view, as changes will be reflected immediately. If events are still slow to reflect in the monthly view, we would like to know more details in order to reproduce the issue. Please send us an email via the contact form in the app. We will investigate whether it is possible to fix the issue so that events are reflected immediately in the weekly view screen. Thank you for your cooperation.

Can’ open app after version upgrade

The app can’t open after version upgrade 3 days ago.

There's something wrong with this app

It has a glitch in it. I tap on it and it glitches and don't open up.

Color coded events

I love that at a glance I can different events for all my family in different colors.

Won’t Open After iOS Update

App no longer opens after updating iOS to 18.4.1 on April 27, 2025. It is now 100% unusable. Makes no difference where I open it from (Home Screen or app list), all I get is a blank page that hangs for a few seconds then crashes. Yes, I’ve uninstalled/reinstalled and restarted phone. Nothing works.

Losing all the info in my calendar is a potential catastrophic event.

I’ve been trying to find a way to contact the dev and report the issue directly, but I haven’t found any way to do that yet, so this problem now goes here in my review. Hopefully that will get *someone’s* attention.
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Response from developer

We have released version 4.2.5 which fixes the problem. Please update to this and try it. Thank you for your cooperation.

B

Perfecta !!!!

シームレスは見やすい!

シームレスカレンダーだと何週間先かパッとわかるので助かります!
アレンジも豊富、共有スケジュールのみ共有でき、会社やプライベートなどを選択できてとても便利です

Love it

Finally, a simple and easy to use calendar app without all the fluff. The only suggestion would be to have the option to select a color for events.

Calendario

6