# ToDotto（トドット）：ToDo &スケジュール管理 vs Deadline Backsolve

The clearest difference is price: ToDotto（トドット）：ToDo &スケジュール管理 at Free against Deadline Backsolve's $0.99. Deadline Backsolve's advantage is review sentiment (100% vs 64%) and update cadence (weekly vs monthly). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

ToDotto（トドット）：ToDo &スケジュール管理 is free to download; Deadline Backsolve costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ToDotto（トドット）：ToDo &スケジュール管理 ships an update monthly, Deadline Backsolve weekly. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | ToDotto（トドット）：ToDo &スケジュール管理 | Deadline Backsolve |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[4.6 (7 ratings)](https://appshunter.io/ios/app/todottotodo-and/id1534970222/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 64.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Weekly** |
| Monetization | **Free** | Paid |
| Size | 60 MB | 4 MB |
| Requires iOS | **16.4** | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [AEVIC CO., LTD.](https://appshunter.io/developer/1534970224) | [Daisuke Yamaguchi](https://appshunter.io/developer/880950899) |

## What reviewers say

### ToDotto（トドット）：ToDo &スケジュール管理

[App page](https://appshunter.io/ios/app/todottotodo-and/id1534970222)

This app helps you manage your to-do lists and daily schedule in one place with a simple, intuitive interface. It offers various viewing options, recurring task setup, and customizable labels for efficient organization. It's completely free to use.

**Highlights:** Multiple to-do display formats (List, Calendar, Schedule), Recurring to-do registration, Calendar import (Google, iCloud, Outlook), Customizable labels and tags, Note function for unscheduled tasks, Search functionality

**In-app purchases:** none

**What reviewers like**

- 👍 Simple and easy to use
- 🎨 Visually appealing design
- ✨ Clean and uncluttered interface
- 🌈 Good color-coding for organization
- ✅ Efficient task management

**What reviewers complain about**

- 📉 Recent updates made it harder to see
- 😥 Colors became faded after update
- 🤏 Text size reduced significantly
- 😵 Difficult to read after updates
- ⚠️ Online migration caused issues

**Reported bugs**

- App sometimes shows a blank white screen
- Cannot log in suddenly, password rejected
- Verification email not received
- App stops loading after data migration
- All plans disappeared after switching to online version

**Requested features**

- Sync with iPhone's native calendar
- Option to increase text size
- Return to previous clear display
- Notification for task end time
- Snooze function for notifications


### Deadline Backsolve

[App page](https://appshunter.io/ios/app/deadline-backsolve-planner/id6796252958)

This app helps you adjust project plans when deadlines are at risk. It calculates the shortfall and suggests concrete adjustments like extending deadlines or reducing scope. The interface is currently in Japanese only.

**Highlights:** Calculates shortfall and suggests fixes, Adjusts plans based on available time, Learns user's real work pace, Offers recovery plan options, Focus timer that survives crashes, Offline functionality, JSON export/import for data transfer

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is ToDotto（トドット）：ToDo &スケジュール管理 free?

ToDotto（トドット）：ToDo &スケジュール管理 is free to download, with no in-app purchases.

### Is Deadline Backsolve free?

Deadline Backsolve costs $0.99, with no in-app purchases.

### Do ToDotto（トドット）：ToDo &スケジュール管理 or Deadline Backsolve have ads?

Neither ToDotto（トドット）：ToDo &スケジュール管理 nor Deadline Backsolve shows ads.

### Which is updated more often, ToDotto（トドット）：ToDo &スケジュール管理 or Deadline Backsolve?

ToDotto（トドット）：ToDo &スケジュール管理 ships an update monthly, and Deadline Backsolve weekly. Most recently, ToDotto（トドット）：ToDo &スケジュール管理 was updated on November 3, 2026 and Deadline Backsolve on October 31, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*