# Countdown vs Datum

The clearest difference is update cadence: Datum at every 2 days against Countdown's every 4 days. Countdown's advantage is device support (5 vs 2) and iOS requirement (17.4 vs 26.0). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. Countdown sells 3 in-app purchases, starting at $1.99 per month and Datum sells 7 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.6 for Countdown against 4.7 for Datum. Both are backed by a comparable volume of ratings — 5 and 3 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Countdown ships an update every 4 days, Datum every 2 days. The most recent releases landed on October 10, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Countdown | Datum |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (5 ratings)](https://appshunter.io/ios/app/countdown-days-until-widget/id6768804877/reviews) | **[4.7 (3 ratings)](https://appshunter.io/ios/app/datum-private-data-tracker/id6784786088/reviews)** |
| Number of ratings | **5** | 3 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 days | **Every 2 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 26 MB | 98 MB |
| Requires iOS | **17.4** | 26.0 |
| Devices | **iPhone, iPad, Mac, Apple TV, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Hello Good Day LLC](https://appshunter.io/developer/1720039558) | [EKPQA, LLC](https://appshunter.io/developer/383063546) |

## What reviewers say

### Countdown

[App page](https://appshunter.io/ios/app/countdown-days-until-widget/id6768804877)

Track upcoming events and past milestones with customizable countdowns and count-ups. Offers a free tier with essential features and a premium upgrade for advanced visualizations and integrations. Designed for a calm, glanceable experience.

**Highlights:** Unlimited countdowns and count-ups, Home-screen widget, Customizable visualizations, Workdays-only counting, Pattern dates for floating holidays, Apple Calendar sync, Lock Screen widgets

**Features:** Family Sharing, Apple Watch app

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Countdown Premium (Monthly) | $1.99 | per month |
| Countdown Premium (Annual) | $6.99 | per year |
| Countdown Premium | $9.99 | one-time |


### Datum

[App page](https://appshunter.io/ios/app/datum-private-data-tracker/id6784786088)

This app allows you to track virtually anything, from daily habits to specific metrics, with customizable input methods and data visualization. It prioritizes user privacy by keeping all data on your device and offers extensive personalization options.

**Highlights:** Track anything with custom units, Multiple input styles (stepper, tally, dial), Bundle trackers into check-ins, Pre-made check-in templates, Customizable dashboard and charts, Attach photos, voice notes, and text, Integrates with Siri and Shortcuts

**Features:** Family Sharing

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Calculated Fields | $7.99 | one-time |
| Attachments | $7.99 | one-time |
| Automations | $7.99 | one-time |
| Unlimited Trackers | $7.99 | one-time |
| Connected Trackers | $7.99 | one-time |
| Datum Pro | $19.99 | one-time |
| Early Adopter | $49.99 | one-time |


## Frequently asked questions

### Is Countdown free?

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

### Is Datum free?

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

### Which has better reviews, Countdown or Datum?

Datum is rated higher. Countdown averages 4.6 out of 5 from 5 ratings, while Datum averages 4.7 from 3 ratings.

### Do Countdown or Datum have ads?

Neither Countdown nor Datum shows ads.

### Which is updated more often, Countdown or Datum?

Countdown ships an update every 4 days, and Datum every 2 days. Most recently, Countdown was updated on October 10, 2026 and Datum on October 2, 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.*