# Power Save Me vs MainframeMonitor

The clearest difference is in-app purchases: MainframeMonitor at none against Power Save Me's 1. MainframeMonitor also leads on update cadence (fortnightly vs every 2 months). Power Save Me's advantage is iOS requirement (15.0 vs 18.6). On price, ads and device support there is nothing between them.

Both are free to download. Power Save Me sells 1 one-off in-app purchase. MainframeMonitor asks for nothing beyond the download.

Power Save Me ships an update every 2 months, MainframeMonitor fortnightly. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Power Save Me | MainframeMonitor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/mainframemonitor/id6809454680/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | — | Free |
| Size | 6 MB | 22 MB |
| Requires iOS | **15.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [LineSpotting AB](https://appshunter.io/developer/1326519237) | [Ralf Langhoff](https://appshunter.io/developer/1706183785) |

## What reviewers say

### Power Save Me

[App page](https://appshunter.io/ios/app/power-save-me/id6474456731)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Power Save Me Pro | $3.99 | one-time |


### MainframeMonitor

[App page](https://appshunter.io/ios/app/mainframemonitor/id6809454680)

Transform your iPhone into a vintage mainframe with a nostalgic CRT display. Monitor live system stats like battery, CPU, and memory, all within an authentic retro console experience. Includes hidden classic text-based games.

**Highlights:** Live system monitoring (battery, CPU, memory, storage), Home screen widgets, Authentic CRT effects (glow, scanlines), Retro boot sequence, Hidden classic text-based games, Customizable color themes (Green, Amber)

**Features:** macOS Compatibility, iPhone Duo support

**In-app purchases:** none


## Frequently asked questions

### Is Power Save Me free?

Power Save Me is free to download, with in-app purchases available.

### Is MainframeMonitor free?

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

### Do Power Save Me or MainframeMonitor have ads?

Neither Power Save Me nor MainframeMonitor shows ads.

### Which is updated more often, Power Save Me or MainframeMonitor?

Power Save Me ships an update every 2 months, and MainframeMonitor fortnightly. Most recently, Power Save Me was updated on October 30, 2026 and MainframeMonitor on October 31, 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.*