# Formulate vs Ostara Mobile

The clearest difference is update cadence: Formulate at every 2 weeks against Ostara Mobile's every 4 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Formulate ships an update every 2 weeks, Ostara Mobile every 4 months. The most recent releases landed on September 19, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Formulate | Ostara Mobile |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 4 months |
| Size | 117 MB | 52 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Triangle Software](https://appshunter.io/developer/903838428) | [Ostara Systems Ltd](https://appshunter.io/developer/830539538) |

## What reviewers say

### Formulate

[App page](https://appshunter.io/ios/app/formulate/id1497742393)

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

**In-app purchases:** none


### Ostara Mobile

[App page](https://appshunter.io/ios/app/ostara-mobile/id1545563422)

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

**In-app purchases:** none


## Frequently asked questions

### Is Formulate free?

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

### Is Ostara Mobile free?

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

### Do Formulate or Ostara Mobile have ads?

Neither Formulate nor Ostara Mobile shows ads.

### Which is updated more often, Formulate or Ostara Mobile?

Formulate ships an update every 2 weeks, and Ostara Mobile every 4 months. Most recently, Formulate was updated on September 19, 2026 and Ostara Mobile on September 9, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*