# Bluetooth Serial Connect vs Days Since

The clearest difference is in-app purchases: Bluetooth Serial Connect at none against Days Since's 2. Bluetooth Serial Connect also leads on iOS requirement (16.2 vs 18.0). Days Since's advantage is ads (none vs shown) and update cadence (daily vs every 10 months). On price 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. Bluetooth Serial Connect asks for nothing beyond the download.

Bluetooth Serial Connect ships an update every 10 months, Days Since daily. The most recent releases landed on September 29, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Bluetooth Serial Connect | Days Since |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (7 ratings)](https://appshunter.io/ios/app/bluetooth-serial-connect/id6449396821/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 10 months | **Daily** |
| Monetization | Free | — |
| Size | 24 MB | 4 MB |
| Requires iOS | **16.2** | 18.0 |
| Devices | iPhone, iPad | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Henry Abrahamsen](https://appshunter.io/developer/1544660671) | [Steven Zilberberg](https://appshunter.io/developer/385470424) |

## What reviewers say

### Bluetooth Serial Connect

[App page](https://appshunter.io/ios/app/bluetooth-serial-connect/id6449396821)

Control your Arduino projects with your phone. Design custom interfaces with buttons, joysticks, and displays to send and receive data via Bluetooth low-energy modules. An integrated library simplifies the connection process.

**Highlights:** Customizable control boards, Button and joystick inputs, Display integration, Bluetooth low-energy module support, Arduino library for easy integration

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

**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 Bluetooth Serial Connect free?

Bluetooth Serial Connect 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 Bluetooth Serial Connect or Days Since have ads?

Bluetooth Serial Connect shows ads; Days Since does not.

### Which is updated more often, Bluetooth Serial Connect or Days Since?

Bluetooth Serial Connect ships an update every 10 months, and Days Since daily. Most recently, Bluetooth Serial Connect was updated on September 29, 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.*