DeepDo vs InkCalc
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
DeepDo
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## App Overview DeepDo is a powerful to-do app that lets you organize tasks and information in an unlimited tree structure. Create subtasks within tasks, and add even finer tasks within those, so you can freely structure complex content. From personal task management to project management, learning, design, and information organization, you can manage your flow of thought as a tree. DeepDo also supports AI-powered structure generation. Simply enter text or ideas, and complex content is automatically organized into a hierarchy. Created structures can be saved, shared, and exported as PDF. Use cases range from sharing procedures and expanding to-do lists to organizing knowledge and visualizing structureβfor both personal and team use. ## Main Features * Add items (to-dos) * AI structure generation * Automatically convert ideas and text into a hierarchy * Support for project planning, learning content, and work procedures * Menu when tapping an item * Select: Open a page based on the selected to-do * Add list: Create a sub-to-do under the selected item * Edit: Change title / price (numeric value) / color * Save: Save the selected item and everything below it * Delete: Delete the selected item and its children * Cut / Copy: Include children; paste anywhere * Insert: Insert saved, cut, or copied items as children * Bulk insert: Paste text and auto-create one item per line * Progress split: Split a to-do with a value into children (original value is cleared) * Hide / collapse children (swipe shortcut) * Display in 3-level blocks (e.g. show levels 5β7; levels 1β4 in breadcrumbs at top) * Drag to reorder and organize items * Map mode: View the full structure; pan and pinch to zoom * Sharing mode: Online sharing via public, group, or limited access * PDF export: Save as searchable, copyable PDF * Backup to storage (folder organization supported) * Backup list: Share / overwrite save / insert / restore / delete * 47 languages (change anytime in settings) ## About Price (Numeric Values) Price is a numeric value you can set on a to-do item. Units can be changed in settings and used for workload, amounts, quantities, man-hours, and more. Examples: * yen * $ * pcs * tasks * person-days *Only leaf items can hold numeric values. ## Developer Intent This app is built for people who think structurally. It shines not only in task management but also when organizing complex information for planning, design, writing, learning, and research. We continue to develop it as an app that supports structuring your thinking itself. ## What Sets DeepDo Apart * Flexible structure management with unlimited hierarchy * Automatic hierarchy generation with AI * Flexible editing with cut / copy / insert at partial levels * Progress and workload visibility with price (numeric values) * Full-structure visualization in map view * PDF export with search and copy support * Online sharing for personal and team use ## Future Updates * Ongoing improvements to AI features * Expanded sharing capabilities * Continuous iOS improvements * More flexible, useful features based on user feedback ## Terms of Use and Privacy Policy Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ DeepDo Terms of Use: https://deepdo.blue/en/terms Privacy Policy: https://deepdo.blue/en/privacy
InkCalc
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Write "29 dollars an hour, 22 hours a week, for 4 weeks." Tap AI. Get 2,552. InkCalc is a calculator you write in sentences. No re-punching numbers into a keypad, no wondering what that figure was for. Units, live currency, dates and percentages all work inline, right in your notes. Write expressions line by line and results appear on the right, accumulating over time alongside written notes β a calculator built to be kept open as a long-running notebook, not a scratchpad. For iPhone, iPad and Mac. Universal Purchase means one subscription covers all three. Starts with a 1-month free trial (auto-renews after that β see SUBSCRIPTION below for details). β AI-NATIVE ACTIONS (subscription required) β AI β Natural language to expression Write "29 dollars an hour, 22 hours a week, for 4 weeks", tap the AI button in the toolbar, and AI converts it to `29 * 22 * 4`. Fix β AI fixes errors With one tap, AI replaces a parser-failed line with a corrected expression. Summary β One-to-three-line note summary AI reads your whole note and summarizes the intent and conclusion in plain natural language. Intent β Intent inference from comments Write a question comment like `# Monthly communications total?`, and AI analyzes the relevant lines and inserts a summing formula directly below the question. Backends: Apple Intelligence (default, on-device or via Apple Private Cloud Compute with end-to-end encryption β neither the developer nor any third party can read the data), or bring-your-own-key options. With a bring-your-own-key backend, the user supplies their own credentials and prompts are sent to the chosen provider. β CALCULATOR FEATURES β β’ Unit math: `5 km in miles`, `1 kg as lb`, `100 USD in JPY` β’ Real-time currency conversion (USD, EUR, JPY, GBP, and more) β subscription required β’ Percent: `20% of 100`, `1000 + 10%` β’ Hex / binary / octal literals + bitwise ops: `0xff & 0x0f`, `255 in hex` β’ Line references: `ans`, `line2`, `sum above`, `avg above`, `total` β’ Dates: `2025-04-25 + 7 days`, `today + 30 days`, date diff in days β’ Functions: sqrt, sin/cos/tan, ln/log, round/floor/ceil, sum/min/max/avg, and more β’ Constants: pi, e, tau β’ Variables: assign with `x = 5` and reuse on later lines β AS A CALCULATION NOTE β β’ Multiple notes + folder selection. Each note is a local `.inkcalc` file. β’ iCloud Drive sync keeps your notes up to date across iPhone, iPad, and Mac. β’ Open `.inkcalc` files directly from the Files app. β’ Export to Markdown / CSV. β UI β β’ Designed for iPhone and iPad (two-pane list + editor layout on iPad) β’ Quick bar above the keyboard: comment toggle and one-tap calculator symbols β’ Dark, minimal UI with a light/dark appearance setting β’ Adjustable font size and decimal precision β PRIVACY β The developer collects nothing β no server, no telemetry, no analytics. With Apple Intelligence as the backend, requests stay on-device or are processed through Apple Private Cloud Compute with end-to-end encryption β neither the developer nor any third party can read the data. See the in-app privacy policy for details. β SUBSCRIPTION β β’ Title: InkCalc Monthly (auto-renewable subscription) β’ Length: 1 month, auto-renewing β’ Price: $1.99 / month (Apple displays your local price in-app) β’ Free trial: 1 month for new subscribers β’ Payment is charged to your Apple ID after the trial. The subscription auto-renews unless canceled at least 24 hours before the end of the current period. β’ Manage or cancel in Settings β [your name] β Subscriptions, or right from the app's own settings screen. β’ Privacy Policy: https://inkcalc.app/privacy β’ Terms of Use (Apple Standard EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ β REQUIREMENTS β iPhone and iPad: iOS 17.0 or later Mac: macOS 13.0 or later (Apple Silicon and Intel) Universal Purchase β one subscription covers all three devices.
Screenshots
Verdict
The clearest difference is ads: InkCalc at none against DeepDo's shown. DeepDo's advantage is update cadence (weekly vs fortnightly) and iOS requirement (15.0 vs 17.0). On price, in-app purchases and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. DeepDo sells 5 in-app purchases, starting at $2.99 per month and InkCalc sells 1 in-app purchase, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.
DeepDo ships an update weekly, InkCalc fortnightly. The most recent releases landed on October 23, 2026 and October 15, 2026 respectively.
| Parameter | DeepDo | InkCalc |
|---|---|---|
| Price | Free | Free |
| Update frequency | Weekly β better | Fortnightly |
| Ads | Yes | No β better |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Requires iOS | 15.0 β better | 17.0 |
| Further details β not scored | ||
| Size | 34 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | HIROSHI KAWASHIMA | KENTARO SOGA |
In-app purchases
DeepDo
- DeepDo Premium$2.991 Month
- DeepDo Premium Description$2.99
- 3000 AI Points$2.99
- 35000 AI Points$29.99
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- 75000 AI Points$59.99
InkCalc
- InkCalc Monthly1 Month trial$1.991 Month









