# Countdown Days Since & Until vs Testify

The clearest difference is ads: Testify at none against Countdown Days Since & Until's shown. Testify also leads on rating (5.0 vs 4.8). Countdown Days Since & Until's advantage is ratings volume (2.5K vs 1) and device support (4 vs 2). On price, in-app purchases and monetization model there is nothing between them.

Both are free to download. Countdown Days Since & Until sells 5 one-off in-app purchases and Testify sells 1 in-app purchase, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

Testify holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Countdown Days Since & Until has 2.5K ratings behind it against 1, so its average is the more settled of the two.

## The numbers

| Metric | Countdown Days Since & Until | Testify |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (2.5K ratings)](https://appshunter.io/ios/app/countdown-days-since-and-until/id732814593/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/testify-ab-testing-tool/id6761442039/reviews)** |
| Number of ratings | **2.5K** | 1 |
| Positive reviews | 80.2% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Fortnightly | — |
| Monetization | Free with in-app purchases | Freemium |
| Size | 52 MB | 4 MB |
| Requires iOS | **15.0** | 26.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Joseph Sferrazza](https://appshunter.io/developer/575418111) | [Rowena Ricalde](https://appshunter.io/developer/634576161) |

## What reviewers say

### Countdown Days Since & Until

[App page](https://appshunter.io/ios/app/countdown-days-since-and-until/id732814593)

Track important dates by counting down or up in various time units. Customize events with photos and icons, and receive timely reminders. Sync across devices and share your countdowns easily.

**Highlights:** Unlimited event tracking, Customizable event visuals, Calendar event import, Customizable alerts, Cross-device synchronization, Home and Lock Screen widgets

**Features:** macOS Compatibility, Apple Watch app, iMessage stickers, Vision Pro support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Let it Snow | $1.99 | one-time |
| Falling Object Pack | $1.99 | one-time |
| Remove Ads | $2.99 | one-time |
| Color and Effect Pack | $2.99 | one-time |
| Unlock All | $4.99 | one-time |

**What reviewers like**

- 🚀 Terrific app
- 👍 Great app
- 👍 Useful app
- 👍 Simple and with all great features
- 👍 Perfect compared to others

**What reviewers complain about**

- 🐛 Backward Step
- 🐛 Can't delete a countdown
- 🐛 Bad
- 🐛 Horrible App
- 🐛 App is broken

**Reported bugs**

- Widget won't unlock
- Countdowns not updating
- Widget isn't working
- The 'Day' Bar isn't scaled right
- New update and still crashes

**Requested features**

- One request
- ADD More features please
- Include start date
- Duration function for events
- Dark mode option


### Testify

[App page](https://appshunter.io/ios/app/testify-ab-testing-tool/id6761442039)

This app helps you conduct scientific experiments in your daily life. Define a hypothesis, track your results, and get clear, statistical explanations of whether your findings are significant. It supports various statistical tests and offers visual data analysis.

**Highlights:** Create experiments with hypotheses, Track daily results and notes, Automatic statistical analysis, Visual charts and confidence intervals, Plain-English result explanations, CSV import/export (Pro), PDF report export (Pro)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock all features | $1.99 | per month |


## Frequently asked questions

### Is Countdown Days Since & Until free?

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

### Is Testify free?

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

### Which has better reviews, Countdown Days Since & Until or Testify?

Testify is rated higher. Countdown Days Since & Until averages 4.8 out of 5 from 2.5K ratings, while Testify averages 5.0 from 1 ratings.

### Do Countdown Days Since & Until or Testify have ads?

Countdown Days Since & Until shows ads; Testify does not.

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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.*