# IDB ONE vs InkThink

The clearest difference is in-app purchases: IDB ONE at none against InkThink's 1. InkThink's advantage is update cadence (every 2 days vs every 6 weeks) and device support (3 vs 1). On price and ads there is nothing between them.

Both are free to download. InkThink sells 1 one-off in-app purchase. IDB ONE asks for nothing beyond the download.

IDB ONE ships an update every 6 weeks, InkThink every 2 days. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | IDB ONE | InkThink |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/inkthink-handwritten-planner/id6757943346/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 2 days** |
| Monetization | — | Free with in-app purchases |
| Size | 100 MB | 214 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Integrated Design & Build Sdn Bhd](https://appshunter.io/developer/497888659) | [Sundaram Applied Technologies](https://appshunter.io/developer/1418740697) |

## What reviewers say

### IDB ONE

[App page](https://appshunter.io/ios/app/idb-one/id1525498924)

**Features:** Vision Pro support

**In-app purchases:** none


### InkThink

[App page](https://appshunter.io/ios/app/inkthink-handwritten-planner/id6757943346)

This app offers a stylus-first planner for creative minds, allowing users to manage tasks, calendars, notes, and mind maps using handwriting. It features intelligent ink reflow and a pen-powered canvas for organizing thoughts without typing.

**Highlights:** Stylus-first handwriting input, Intelligent ink reflow for tasks and calendar, All-in-one planner (Diary, Calendar, Tasks, Mind Maps, Notes), Interactive handwritten calendar entries, Freeform thinking canvas for brainstorming, Modular and intuitive design

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| InkThink Base App | $24.99 | one-time |


## Frequently asked questions

### Is IDB ONE free?

IDB ONE is free to download, with no in-app purchases.

### Is InkThink free?

InkThink is free to download, with in-app purchases available.

### Do IDB ONE or InkThink have ads?

Neither IDB ONE nor InkThink shows ads.

### Which is updated more often, IDB ONE or InkThink?

IDB ONE ships an update every 6 weeks, and InkThink every 2 days. Most recently, IDB ONE was updated on November 3, 2026 and InkThink on November 5, 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.*