# SIM vs Dan

The clearest difference is in-app purchases: SIM at none against Dan's 5. SIM also leads on device support (3 vs 1) and iOS requirement (15.1 vs 26.0). On price, update cadence and ads there is nothing between them.

Both are free to download. Dan sells 5 one-off in-app purchases. SIM asks for nothing beyond the download.

SIM ships an update monthly, Dan fortnightly. The most recent releases landed on October 17, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | SIM | Dan |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/dan-storage-battery-and-checks/id6801898286/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Fortnightly** |
| Monetization | — | Free with in-app purchases |
| Size | 35 MB | 32 MB |
| Requires iOS | **15.1** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | +4 |
| Developer | [Vegait Tecnologia da Informacao Ltda EPP](https://appshunter.io/developer/1418711581) | [Marcel Alves](https://appshunter.io/developer/1133220395) |

## What reviewers say

### SIM

[App page](https://appshunter.io/ios/app/sim/id6445855775)

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

**In-app purchases:** none


### Dan

[App page](https://appshunter.io/ios/app/dan-storage-battery-and-checks/id6801898286)

This app helps you understand and optimize your device's performance. It provides step-by-step guidance for managing storage, battery life, and charging reliability, empowering you with knowledge about your device's health.

**Highlights:** Storage guidance for reclaimable space, Battery usage and charging habit analysis, Charging reliability checks, Step-by-step tutorials for device management, App and device history management

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CPU Monitor | $0.99 | one-time |
| RAM Monitor | $0.99 | one-time |
| Temperature Status Monitor | $0.99 | one-time |
| Storage Monitor | $0.99 | one-time |
| All Monitors | $2.99 | one-time |


## Frequently asked questions

### Is SIM free?

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

### Is Dan free?

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

### Do SIM or Dan have ads?

Neither SIM nor Dan shows ads.

### Which is updated more often, SIM or Dan?

SIM ships an update monthly, and Dan fortnightly. Most recently, SIM was updated on October 17, 2026 and Dan on October 25, 2026.

---

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