# BlueHHT vs Days Since

The clearest difference is in-app purchases: BlueHHT at none against Days Since's 2. BlueHHT also leads on iOS requirement (13.0 vs 18.0). Days Since's advantage is update cadence (daily vs every 12 months). On price, ads and device support there is nothing between them.

Both are free to download. Days Since sells 2 in-app purchases, starting at $1.99 per month. BlueHHT asks for nothing beyond the download.

BlueHHT ships an update every 12 months, Days Since daily. The most recent releases landed on October 2, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | BlueHHT | Days Since |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 12 months | **Daily** |
| Size | 15 MB | 4 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Dohmann Engineering Services](https://appshunter.io/developer/401682475) | [Steven Zilberberg](https://appshunter.io/developer/385470424) |

## What reviewers say

### BlueHHT

[App page](https://appshunter.io/ios/app/bluehht/id1551056680)

**Features:** macOS Compatibility

**In-app purchases:** none


### Days Since

[App page](https://appshunter.io/ios/app/days-since-event-tracker/id6798489152)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Day Since Premium (Monthly) | $1.99 | per month |
| Days Since Premium Lifetime | $19.99 | one-time |


## Frequently asked questions

### Is BlueHHT free?

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

### Is Days Since free?

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

### Do BlueHHT or Days Since have ads?

Neither BlueHHT nor Days Since shows ads.

### Which is updated more often, BlueHHT or Days Since?

BlueHHT ships an update every 12 months, and Days Since daily. Most recently, BlueHHT was updated on October 2, 2026 and Days Since on October 13, 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.*