# Odometer Data Observer vs Odo

The clearest difference is in-app purchases: Odo at none against Odometer Data Observer's 10. Odo also leads on iOS requirement (17.0 vs 26.2). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Odometer Data Observer sells 10 in-app purchases, starting at $2.99 per month. Odo asks for nothing beyond the download.

Odometer Data Observer ships an update every 5 days, Odo every 8 days. The most recent releases landed on September 13, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | Odometer Data Observer | Odo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 8 days |
| Size | 4 MB | 3 MB |
| Requires iOS | 26.2 | **17.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Sotiris Sotiriou](https://appshunter.io/developer/1885769517) | [TEJEN KRISHNA SHRESTHA](https://appshunter.io/developer/6780982413) |

## What reviewers say

### Odometer Data Observer

[App page](https://appshunter.io/ios/app/odometer-data-observer/id6760692984)

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 ADDITIONAL CAR (Monthly) | $2.99 | per month |
| COST MANAGEMENT (Monthly) | $2.99 | per month |
| BASIC (Monthly) | $4.99 | per month |
| 2 ADDITIONAL CARS (Monthly) | $4.99 | per month |
| 3 ADDITIONAL CARS (Monthly) | $7.99 | per month |
| 1 ADDITIONAL CAR (Yearly) | $24.99 | per year |
| COST MANAGEMENT (Yearly) | $24.99 | per year |
| BASIC (Yearly) | $49.99 | per year |
| 2 ADDITIONAL CARS (Yearly) | $49.99 | per year |
| 3 ADDITIONAL CARS (Yearly) | $79.99 | per year |


### Odo

[App page](https://appshunter.io/ios/app/odo-car-maintenance-tracker/id6780982411)

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

**In-app purchases:** none


## Frequently asked questions

### Is Odometer Data Observer free?

Odometer Data Observer is free to download, with in-app purchases available.

### Is Odo free?

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

### Do Odometer Data Observer or Odo have ads?

Neither Odometer Data Observer nor Odo shows ads.

### Which is updated more often, Odometer Data Observer or Odo?

Odometer Data Observer ships an update every 5 days, and Odo every 8 days. Most recently, Odometer Data Observer was updated on September 13, 2026 and Odo on September 7, 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.*