gjICE vs Stackis RPN
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
gjICE
Display crucial emergency contact information directly on your Lock Screen. This utility allows for customizable text, including basic formatting and emojis, ensuring vital details are accessible at a glance. It supports system dark and light modes for seamless integration.
- Lock Screen widget
- ICE contact details
- Basic markdown support
- Emoji support
- System dark/light mode support
- iOS 17.5+ required
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Use gjICE to display your In Case of Emergency (ICE) contact details in a widget on the Lock Screen. Features: - Requires iOS 17.5 or later. - Up to 3 lines of text, empty lines are ignored. - Support for basic markdown: - To bold text, add two asterisks or underscores before and after a word or phrase. - To italicise text, add one asterisk or underscore before and after a word or phrase. - To strikeout text, add two tildes (~) before and after a word or phrase. - Emojis may be used but they will appear washed out since iOS applies a tint to all Lock Screen widgets. - Supports system dark and light modes.
Stackis RPN
A calculator designed for users who prefer Reverse Polish Notation (RPN). It offers a familiar interface for RPN users and includes support for duodecimal calculations.
- RPN calculation style
- Duodecimal (dozenal) support
- Familiar interface for RPN users
- Simple and pleasant user experience
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This is an RPN calculator in the style of, for instance, old HP models. It will feel familiar if you are used to RPN, otherwise it will probably be a little confusing at first. It's not programmable and it doesn't try to mimic older hardware; it's just meant to be a pleasant calculator for those who prefer to use RPN. Also, if you want to perform calculations in duodecimal (dozenal), this app is for you!
Screenshots
Verdict
The clearest difference is in-app purchases: gjICE at none against Stackis RPN's 1. Stackis RPN's advantage is update cadence (every 4 days vs every 4 months). On price, review sentiment, ads and monetization model 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. Stackis RPN sells 1 one-off in-app purchase. gjICE asks for nothing beyond the download.
gjICE ships an update every 4 months, Stackis RPN every 4 days. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.
| Parameter | gjICE | Stackis RPN |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (2 ratings) — better |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | — | 2 — better |
| Update frequency | Every 4 months | Every 4 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | Free |
| Devices | iPhone | iPhone, iPod — better |
| Requires iOS | 17.5 — better | 17.6 |
| Further details — not scored | ||
| Size | 2 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | Gavin Jerman | Skimra |
Customer experience
gjICE
Stackis RPN
In-app purchases
gjICE
No in-app purchases
Stackis RPN
- Advanced Mode$1.99
