Period vs ToDoAppTab
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Period
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Want to know when everyone’s free? Need to schedule a meeting or practice during free periods? That’s where Comma comes in. Comma is a free scheduling app designed for university students. All you have to input is your available class periods—that’s it. See everyone’s free slots and plan your events smoothly. Comma also comes with smart features to make entering your availability fast and easy. ■ Features – Column Selection If you’re free all day, just tap once to select the entire day’s free periods. – Weekly Schedule Register your typical weekly free periods in advance and apply them with one tap. Input becomes even easier when you set your timetable. – Paste Feature If you have overlapping scheduling periods, you can paste availability from other events. ■ How to Use – For Organizers: Create an event, share the invitation link with your group, and enter your availability. – For Participants: Click the invite link, join the event, and enter your free periods. ■ Ideal For Club or team practice Group meetings Study sessions ...and many other group activities!
ToDoAppTab
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A simple to-do app that keeps your tasks organized with tabs. Work, shopping, things to do today — create a tab for each purpose and keep your tasks neatly separated. Turn a messy to-do list into something that works the way you do. ■ Simple enough to stick with Jot down whatever comes to mind and add it in a tap. Check off tasks with a single tap. No clutter, no complicated setup — just a light, everyday app you'll actually keep using. ■ Make tabs your own Choose a name, color, and icon to create your own tabs. Reorder them freely with drag & drop. ■ Move tasks with a simple drag Press and hold a task, then drag it to move it between tabs or reorder it. Everything feels natural and immediate. ■ Delete without worry Deleted tasks move to the Trash tab, so an accidental delete is easy to undo. Remove them for good from the Trash whenever you like. ■ Fully offline, no sign-up All your data stays on your device. No internet connection and no account required — just open it and go, anytime, anywhere. ■ Comfortable in either hand Switch the button and layout placement to match your dominant hand. Whether you're right- or left-handed, it's easy to use comfortably with one hand. ■ Thoughtful details - Light and dark mode (easy on the eyes at night) - English and Japanese (auto-detected from your device) Simple, fast, and organized your way. Make everyday task management feel a little better.
Screenshots
Verdict
The clearest difference is in-app purchases: ToDoAppTab at none against Period's 1. ToDoAppTab also leads on ads (none vs shown). On price, device support and iOS requirement 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
Both are free to download. Period sells 1 one-off in-app purchase. ToDoAppTab asks for nothing beyond the download.
| Parameter | Period | ToDoAppTab |
|---|---|---|
| Price | Free | Free |
| Update frequency | Monthly | — |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.1 | 15.1 |
| Further details — not scored | ||
| Size | 45 MB | 32 MB |
| Age rating | 4+ | 4+ |
| Developer | TOMOKI KAMO | minoru horiuchi |
In-app purchases
Period
- プレミアムパス$2.99
ToDoAppTab
No in-app purchases









