# 100 Days Tracker vs Days Countdown

The clearest difference is update cadence: Days Countdown at daily against 100 Days Tracker's every 6 weeks. Days Countdown also leads on iOS requirement (12.0 vs 17.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. 100 Days Tracker sells 1 one-off in-app purchase and Days Countdown sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

100 Days Tracker ships an update every 6 weeks, Days Countdown daily. The most recent releases landed on August 2, 2026 and June 4, 2026 respectively.

## The numbers

| Metric | 100 Days Tracker | Days Countdown |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Daily** |
| Monetization | Free | — |
| Size | 11 MB | 123 MB |
| Requires iOS | 17.6 | **12.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Chad Goodyear](https://appshunter.io/developer/1448496611) | [Onat Cipli](https://appshunter.io/developer/1499186364) |

## What reviewers say

### 100 Days Tracker

[App page](https://appshunter.io/ios/app/100-days-tracker/id6470750665)

This app helps you build lasting habits by tracking your daily progress on up to 100-day challenges. Customize your goals with themes and layouts, and share your achievements. Widgets offer at-a-glance progress updates.

**Highlights:** Track multiple 100-day challenges, Home screen widgets for progress, Customizable color themes, Grid and overview layouts, Share progress snapshots

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Lifetime | $6.99 | one-time |


### Days Countdown

[App page](https://appshunter.io/ios/app/days-countdown-eventbirthday/id6743321613)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Lifetime | $9.99 | one-time |


## Frequently asked questions

### Is 100 Days Tracker free?

100 Days Tracker is free to download, with in-app purchases available.

### Is Days Countdown free?

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

### Do 100 Days Tracker or Days Countdown have ads?

Neither 100 Days Tracker nor Days Countdown shows ads.

### Which is updated more often, 100 Days Tracker or Days Countdown?

100 Days Tracker ships an update every 6 weeks, and Days Countdown daily. Most recently, 100 Days Tracker was updated on August 2, 2026 and Days Countdown on June 4, 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.*