# Antodo vs Challenge21

The clearest difference is in-app purchases: Challenge21 at none against Antodo's 4. Antodo's advantage is device support. On price and iOS requirement there is nothing between them.

Both are free to download. Antodo sells 4 one-off in-app purchases. Challenge21 asks for nothing beyond the download.

## The numbers

| Metric | Antodo | Challenge21 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (7 ratings)](https://appshunter.io/ios/app/antodo-simple-todo-plan-memo/id1553604322/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 96.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | — |
| Update frequency | Monthly | — |
| Monetization | Free with in-app purchases | — |
| Size | 91 MB | 31 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | **iPhone, iPod** | — |
| Age rating | 4+ | 4+ |
| Developer | [seungmin lee](https://appshunter.io/developer/1553604324) | [Astra Zenith Ltd.](https://appshunter.io/developer/1834145226) |

## What reviewers say

### Antodo

[App page](https://appshunter.io/ios/app/antodo-simple-todo-plan-memo/id1553604322)

This app helps you stay organized and motivated by breaking down tasks into manageable steps. Earn rewards for completing to-dos and discover the lives of ant characters as you progress. It's designed to encourage consistent effort, even for small tasks.

**Highlights:** Task management, Daily planning, Gamified rewards (star candies), Character collection, Motivation for lazy users, Small task tracking

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 25 candies | $0.99 | one-time |
| 55 candies | $1.99 | one-time |
| 90 candies | $2.99 | one-time |
| Pro | $3.99 | one-time |


### Challenge21

[App page](https://appshunter.io/ios/app/challenge21/id6759655419)

**In-app purchases:** none


## Frequently asked questions

### Is Antodo free?

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

### Is Challenge21 free?

Challenge21 is free to download, with no in-app purchases.

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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.*