# Mountain Stream Cold Tracker vs Altaflip

The clearest difference is iOS requirement: Altaflip at 15.1 against Mountain Stream Cold Tracker's 17.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Mountain Stream Cold Tracker sells 2 in-app purchases, starting at $1.99 per month and Altaflip sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Mountain Stream Cold Tracker | Altaflip |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | — | Every 6 weeks |
| Size | 5 MB | 58 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, Apple Watch | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Kasper Kraegpoeth](https://appshunter.io/developer/1709983012) | [Zen Zero Pty Ltd](https://appshunter.io/developer/1803788845) |

## What reviewers say

### Mountain Stream Cold Tracker

[App page](https://appshunter.io/ios/app/mountain-stream-cold-tracker/id6502903586)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $1.99 | per month |
| Premium Annually | $17.99 | per year |


### Altaflip

[App page](https://appshunter.io/ios/app/altaflip-sauna-and-cold-tracker/id6756031717)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $4.99 | per month |
| Premium Yearly | $29.99 | per year |
| Premium Lifetime | $79.99 | one-time |


## Frequently asked questions

### Is Mountain Stream Cold Tracker free?

Mountain Stream Cold Tracker is free to download, with in-app purchases available.

### Is Altaflip free?

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

### Do Mountain Stream Cold Tracker or Altaflip have ads?

Neither Mountain Stream Cold Tracker nor Altaflip shows ads.

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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.*