Comparison

Gantts vs Obi

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

Head to head
About

Gantts

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「GanttChart」は、直感的な操作で本格的な進捗管理ができるガントチャート&WBS作成アプリです。 プロジェクトの計画から日々のタスク管理まで、ビジネス・プライベートを問わず幅広く活用いただけます。 主な機能 ・ガントチャート & WBS タップとドラッグの直感的な操作で、タスクの依存関係やスケジュールを簡単に調整可能。プロジェクトの全体像を一目で把握できます。 その他の特徴 ・階層構造(WBS)の保持 ・依存関係の矢印表示 ・タスクの期限や進捗のスマートな表示 ・シンプルで集中できるUI プロジェクトマネージャーから、個人の目標管理まで。 「GanttChart」で、あなたのタスク管理を次のレベルへ。

About

Obi

Features
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Obi-Yomi is a quiet, lightweight calendar for viewing your family's and your own plans side by side, like a single band of time. It is not a do-everything power tool. Its focus is simple: bring plans in, share them, and glance at them. ■ Easy to import Each family member just pastes the shareable address (.ics) of the calendar they already use. Apple Calendar or Google Calendar — paste the URL and their plans line up on the band. No need to retype anything. ■ Import from handwriting, photos, and text (supported devices) Photograph a paper handout or note, paste some text, or write by hand on iPad to create event drafts (automatically on devices with on-device AI; on others you enter them while looking at the recognized text). You always confirm before saving. ■ Switch views lightly • Month (zoom in for a weekly timetable, out for two months) • Timeline (two weeks to two years; sort by person or task — like a Gantt chart for long-term planning) • Day view (overlapping events split into side-by-side columns) See the same plans at the level of detail you want. ■ The same board with family Share the same band with just a code and password. No account required. ■ Availability mode Offer "are you free this Saturday?" with marks right on the schedule. Days when everyone is free turn gold. ■ And more • Tap the schedule to add and edit events • Search across all spaces • Export the schedule (PDF / image / HTML) — to send to friends not on iPhone, to print, and so on • Switch themes to match your mood, from washi paper to Impressionist palettes Obi-Yomi is a tool to easily bring in all sorts of information and view your personal and shared plans at a glance. Note: .ics sync can lag minutes to hours (use it for an overview). AI drafting from handwriting/photos/text runs automatically only on devices that support on-device AI.

Screenshots

Obi4 screens

Verdict

The call

The clearest difference is device support: Obi at 2 against Gantts's —. Gantts's advantage is iOS requirement (13.0 vs 17.0). On price 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.

Scorecard2 real differences · 3 level
Gantts versus Obi: the parameters behind the verdict, then further details
ParameterGanttsObi
PriceFreeFree
Ads—No
In-app purchasesNoNo
Devices—iPhone, iPad — better
Requires iOS13.0 — better17.0
Further details — not scored
Size59 MB7 MB
Age rating4+4+
DeveloperYoshiyuki FukaboriDaisaku Seto

In-app purchases

None

Gantts

No in-app purchases

None

Obi

No in-app purchases

Questions

Is Gantts free?
Gantts is free to download, with no in-app purchases.
Is Obi free?
Obi is free to download, with no in-app purchases.

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