# Dog Birthday Tracker vs Linea

The clearest difference is in-app purchases: Dog Birthday Tracker at none against Linea's 1. Linea's advantage is update cadence (every 2 days vs every 4 months) and iOS requirement (16.6 vs 18.0). On price, ads and device support there is nothing between them.

Both are free to download. Linea sells 1 one-off in-app purchase. Dog Birthday Tracker asks for nothing beyond the download.

Dog Birthday Tracker ships an update every 4 months, Linea every 2 days. The most recent releases landed on October 25, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Dog Birthday Tracker | Linea |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 days** |
| Size | 6 MB | 2 MB |
| Requires iOS | 18.0 | **16.6** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Sogro, LLC](https://appshunter.io/developer/1099524882) | [Lene Nordheggen](https://appshunter.io/developer/1896400274) |

## What reviewers say

### Dog Birthday Tracker

[App page](https://appshunter.io/ios/app/dog-birthday-tracker/id6761439899)

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

**In-app purchases:** none


### Linea

[App page](https://appshunter.io/ios/app/linea-age-tracker/id6767146079)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Linea Pro | $5.99 | one-time |


## Frequently asked questions

### Is Dog Birthday Tracker free?

Dog Birthday Tracker is free to download, with no in-app purchases.

### Is Linea free?

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

### Do Dog Birthday Tracker or Linea have ads?

Neither Dog Birthday Tracker nor Linea shows ads.

### Which is updated more often, Dog Birthday Tracker or Linea?

Dog Birthday Tracker ships an update every 4 months, and Linea every 2 days. Most recently, Dog Birthday Tracker was updated on October 25, 2026 and Linea 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.*