The Last 5% vs System Rx
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
The Last 5%
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A small act of thoughtfulness before your phone goes dark. "The Last 5%" is a communication support tool that automatically sends your location and a message to someone you care about — right before your iPhone battery dies. [Perfect for situations like these] ・Coming home from work or a night out: Automatically lets someone know "I'm on my way home" or "My battery's about to die, so I'll be out of reach" — before it's too late. ・Your child's phone: When your kid's phone is about to die after school or hanging out with friends, their last-known location is quietly sent to you before the connection is lost. ・Meeting up with friends: If your battery might not make it to the meetup, share your current location in advance for a smoother rendezvous. [Key Features] ・Detects low battery (5% or below) and automatically sends a message. ・Includes a map link with your current location so the recipient knows exactly where you are. [Simple to Set Up] This app works in tandem with iOS Shortcuts. Just follow the in-app guide to set up your own personal communication protocol — no tech skills required. ※ This app is a supplemental tool that leverages iOS system features. It may not function in all network conditions, so please use it as one of your everyday communication options rather than as a primary lifeline.
System Rx
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System Rx is the professional-grade diagnostic tool designed for power users who need exact hardware transparency. Monitor your system's vitals across iOS, and iPadOS with precise hardware identification and real-time telemetry. Key Features: Precise Hardware Identity: Accurate identification of your device model, chip (including M4, A18 Pro, and A17 Pro), and technical specs. CPU & RAM Monitoring: Monitor processor load and memory footprint in real-time with technical-grade accuracy. System Thermal States: Keep an eye on your device's temperature and thermal throttling status. Storage & Battery: Detailed insights into SSD health, read/write rates, and battery cycles. Privacy First: No telemetry leaves your device. All data is processed locally.
Screenshots
Verdict
The clearest difference is device support: System Rx at 3 against The Last 5%'s 1. On price, update cadence, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
The Last 5% ships an update every 2 weeks, System Rx every 3 weeks. The most recent releases landed on October 25, 2026 and October 11, 2026 respectively.
| Parameter | The Last 5% | System Rx |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 weeks — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone | iPhone, iPad, Mac — better |
| Requires iOS | 18.4 | 17.0 — better |
| Further details — not scored | ||
| Size | 56 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | hiroki mori | Mohamed Saud |
In-app purchases
The Last 5%
No in-app purchases
System Rx
No in-app purchases









