# Blip Daily vs 21DaysOfChange

The clearest difference is in-app purchases: Blip Daily at none against 21DaysOfChange's 4. Blip Daily also leads on iOS requirement (12.0 vs 16.4). 21DaysOfChange's advantage is ads (none vs shown) and update cadence (every 9 months vs every 49 months). On price and device support there is nothing between them.

Both are free to download. 21DaysOfChange sells 4 in-app purchases, starting at $5.99 per month. Blip Daily asks for nothing beyond the download.

Blip Daily ships an update every 49 months, 21DaysOfChange every 9 months. The most recent releases landed on September 16, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Blip Daily | 21DaysOfChange |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 49 months | **Every 9 months** |
| Size | 12 MB | 59 MB |
| Requires iOS | **12.0** | 16.4 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [gangadhar goud](https://appshunter.io/developer/898647800) | [Hong Son Vu](https://appshunter.io/developer/1767993431) |

## What reviewers say

### Blip Daily

[App page](https://appshunter.io/ios/app/blip-daily/id1291776297)

**Features:** macOS Compatibility

**In-app purchases:** none


### 21DaysOfChange

[App page](https://appshunter.io/ios/app/21daysofchange/id6677019535)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 21DaysOfChange Monthly Premium | $5.99 | per month |
| 21DaysOfChange Monthly Business | $17.99 | per month |
| 21DaysOfChange Yearly Premium | $71.99 | per year |
| 21DaysOfChange Yearly Business | $214.99 | per year |


## Frequently asked questions

### Is Blip Daily free?

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

### Is 21DaysOfChange free?

21DaysOfChange is free to download, with in-app purchases available.

### Do Blip Daily or 21DaysOfChange have ads?

Blip Daily shows ads; 21DaysOfChange does not.

### Which is updated more often, Blip Daily or 21DaysOfChange?

Blip Daily ships an update every 49 months, and 21DaysOfChange every 9 months. Most recently, Blip Daily was updated on September 16, 2026 and 21DaysOfChange on September 18, 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.*