# sTEM controller vs Habit Tracker

The clearest difference is in-app purchases: sTEM controller at none against Habit Tracker's 4. sTEM controller also leads on iOS requirement (13.0 vs 17.0). Habit Tracker's advantage is update cadence (every 5 days vs every 5 months). On price, ads and device support there is nothing between them.

Both are free to download. Habit Tracker sells 4 in-app purchases, starting at $4.99 per month. sTEM controller asks for nothing beyond the download.

sTEM controller ships an update every 5 months, Habit Tracker every 5 days. The most recent releases landed on October 12, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | sTEM controller | Habit Tracker |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 5 days** |
| Size | 31 MB | 17 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 17+ | 12+ |
| Developer | [Temcompany ApS](https://appshunter.io/developer/1700820640) | [Nico Schroeder](https://appshunter.io/developer/432790036) |

## What reviewers say

### sTEM controller

[App page](https://appshunter.io/ios/app/stem-controller/id6457210066)

**Features:** macOS Compatibility

**In-app purchases:** none


### Habit Tracker

[App page](https://appshunter.io/ios/app/habit-tracker-track-your-day/id6772600216)

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| One Month Premium | $4.99 | per month |
| One Week Premium | $5.99 | per 7 days |
| One Year Premium | $19.99 | per year |
| Lifetime Premium | $29.99 | one-time |


## Frequently asked questions

### Is sTEM controller free?

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

### Is Habit Tracker free?

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

### Do sTEM controller or Habit Tracker have ads?

Neither sTEM controller nor Habit Tracker shows ads.

### Which is updated more often, sTEM controller or Habit Tracker?

sTEM controller ships an update every 5 months, and Habit Tracker every 5 days. Most recently, sTEM controller was updated on October 12, 2026 and Habit Tracker on October 8, 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.*