# MySensor² vs OTB Clock

The clearest difference is update cadence: OTB Clock at every 2 weeks against MySensor²'s monthly. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. MySensor² sells 4 in-app purchases, starting at $2.99 per 7 days and OTB Clock sells 1 in-app purchase, starting at $19.99 per year. Whichever you choose, the download price is not the number that matters.

MySensor² ships an update monthly, OTB Clock every 2 weeks. The most recent releases landed on November 8, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | MySensor² | OTB Clock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (4 ratings)](https://appshunter.io/ios/app/mysensor-bike-sensor-battery/id6504740377/reviews)** | — |
| Number of ratings | **4** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 2 weeks** |
| Monetization | Freemium | — |
| Size | 28 MB | 1 MB |
| Requires iOS | 17.5 | **17.0** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [兴华 范](https://appshunter.io/developer/440983944) | [杰 向](https://appshunter.io/developer/1860305678) |

## What reviewers say

### MySensor²

[App page](https://appshunter.io/ios/app/mysensor-bike-sensor-battery/id6504740377)

Effortlessly monitor the battery levels of all your cycling sensors in one place. View status directly from your home screen or Apple Watch with convenient widgets. Avoid mid-ride surprises and ensure your gear is always ready.

**Highlights:** All sensor batteries in one view, Power meter monitoring, Heart rate monitor support, Speed and cadence sensor tracking, Electronic shifter battery status, Home screen widgets, Apple Watch Stack widget

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium (Weekly) | $2.99 | per 7 days |
| Premium (Monthly) | $6.99 | per month |
| Premium (Annual) | $19.99 | per year |
| Premium (Lifetime) | $39.99 | one-time |


### OTB Clock

[App page](https://appshunter.io/ios/app/otb-clock/id6762344990)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium — Yearly | $19.99 | per year |


## Frequently asked questions

### Is MySensor² free?

MySensor² is free to download, with in-app purchases available.

### Is OTB Clock free?

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

### Do MySensor² or OTB Clock have ads?

Neither MySensor² nor OTB Clock shows ads.

### Which is updated more often, MySensor² or OTB Clock?

MySensor² ships an update monthly, and OTB Clock every 2 weeks. Most recently, MySensor² was updated on November 8, 2026 and OTB Clock on November 5, 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.*