# Challenges vs MultiSens

The clearest difference is in-app purchases: MultiSens at none against Challenges's 1. Challenges's advantage is update cadence (every 8 days vs every 2 months) and iOS requirement (13.4 vs 15.6). On price, ads and device support there is nothing between them.

Both are free to download. Challenges sells 1 one-off in-app purchase. MultiSens asks for nothing beyond the download.

Challenges ships an update every 8 days, MultiSens every 2 months. The most recent releases landed on September 8, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Challenges | MultiSens |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/multisens-1234/id1533837949/reviews)** |
| Number of ratings | — | **3** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 8 days** | Every 2 months |
| Monetization | — | Free |
| Size | 5 MB | 99 MB |
| Requires iOS | **13.4** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Felipe Braunger Valio Desenvolvimento de Sistemas Ltda](https://appshunter.io/developer/615749291) | [Sens-OS](https://appshunter.io/developer/1533837951) |

## What reviewers say

### Challenges

[App page](https://appshunter.io/ios/app/challenges-activity-tracker/id1517250920)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium access | $0.99 | one-time |


### MultiSens

[App page](https://appshunter.io/ios/app/multisens-1234/id1533837949)

This application allows users to test various machine condition monitoring sensors. It connects to sensors, displays Time Waveform and Vibration Spectrum graphs, and auto-calibrates for data acquisition.

**Highlights:** Test machine condition monitoring sensors, Connect to sensors, Plot Time Waveform graph, Plot Vibration Spectrum (Acceleration, dB, Velocity), Auto-calibrate to sensors, Data acquisition with adjustable sampling rates and sample counts

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

**In-app purchases:** none


## Frequently asked questions

### Is Challenges free?

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

### Is MultiSens free?

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

### Do Challenges or MultiSens have ads?

Neither Challenges nor MultiSens shows ads.

### Which is updated more often, Challenges or MultiSens?

Challenges ships an update every 8 days, and MultiSens every 2 months. Most recently, Challenges was updated on September 8, 2026 and MultiSens on September 17, 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.*