# Days Since vs Testify

The clearest difference is rating: Testify at 5.0 against Days Since's 3.3. Days Since's advantage is monetization model (free vs freemium) and ratings volume (153 vs 1). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Days Since sells 3 in-app purchases, starting at $2.99 per 7 days 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 3.3. That said, the two scores are not equally well evidenced: Days Since has 153 ratings behind it against 1, so its average is the more settled of the two.

## The numbers

| Metric | Days Since | Testify |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.3 (153 ratings)](https://appshunter.io/ios/app/days-since-track-memories/id1634218216/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/testify-ab-testing-tool/id6761442039/reviews)** |
| Number of ratings | **153** | 1 |
| Positive reviews | 25.5% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Monetization | **Free** | Freemium |
| Size | 29 MB | 4 MB |
| Requires iOS | 26.0 | 26.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Good Snooze](https://appshunter.io/developer/1154986448) | [Rowena Ricalde](https://appshunter.io/developer/634576161) |

## What reviewers say

### Days Since

[App page](https://appshunter.io/ios/app/days-since-track-memories/id1634218216)

This app helps you track the number of days since significant life events or habits. Set reminders and use widgets to stay motivated in building new routines or breaking old ones.

**Highlights:** Unlimited event counters, Customizable reminders, Home screen widgets, Organize events by category, Customizable color themes and app icons

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Subscription | $2.99 | per 7 days |
| DaysSince Monthly | $4.99 | per month |
| Annual Subscription | $19.99 | per year |


### 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 Days Since free?

Days Since 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, Days Since or Testify?

Testify is rated higher. Days Since averages 3.3 out of 5 from 153 ratings, while Testify averages 5.0 from 1 ratings.

### Do Days Since or Testify have ads?

Neither Days Since nor Testify shows ads.

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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.*