# 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 September 12, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | MySensor² | OTB Clock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (4 ratings)](https://appshunter.io/ios/app/mysensorbike-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 | 29 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/mysensorbike-sensor-battery/id6504740377)

Effortlessly monitor the battery levels of all your cycling sensors, including power meters, heart rate monitors, and shifters, in one convenient app. Get quick access to battery status via desktop widgets or Apple Watch Stacks without needing to open the application.

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

**Features:** macOS Compatibility, Apple Watch app, Vision Pro 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 September 12, 2026 and OTB Clock on September 19, 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.*