Messiah Elementary vs RPN Memory Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Messiah Elementary
This app serves as a central communication tool for Messiah Lutheran School, providing access to calendars, newsletters, and important event notifications. It aims to foster community engagement and facilitate sharing school information.
- School calendars
- Newsletter access
- Event notifications
- Community engagement tools
- Information sharing
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This app is the communications hub for families at Messiah Lutheran School -Find our calendars -Access newsletter content -Jump to your FACTS account
RPN Memory Calculator
This application provides a straightforward reverse Polish notation (RPN) calculator with essential functions and memory operations. It also includes integrated unit conversions for various measurements, allowing for quick conversions directly within the app. The calculator remembers your session, preserving all registers and memory values for future use.
- Reverse Polish Notation (RPN) input
- Seven core calculator functions
- Memory operations
- Integrated unit conversions (Speed, Mass, Temperature, Pressure)
- Persistent state saving
- Three visible registers
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RPN Memory Calculator is a simple to use reverse polish notation calculator with seven functions and memory operations including a memory value display and three visible registers. This is not intended to be a full scientific function calculator, it is a handy implementation of basic calculator operations using RPN. The calculator also integrates unit conversions, so you can convert the value in the x register. This allows you to choose a type (Speed, Mass, Temperature, Pressure etc) and then pick a from and to type. The converted number can either be accepted back into the x register, or discarded. The calculator remembers state so that calculations you have been working on, with results stored in either the memory field or any of the registers, will still be present when re-open the app any time in the future. All registers, even the hidden ones above z are stored.
Screenshots
Verdict
The clearest difference is in-app purchases: Messiah Elementary at none against RPN Memory Calculator's 1. RPN Memory Calculator's advantage is iOS requirement (11.3 vs 15.0). On price, update cadence, 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. RPN Memory Calculator sells 1 one-off in-app purchase. Messiah Elementary asks for nothing beyond the download.
Both ship on a similar rhythm, roughly every 4 months. The most recent releases landed on October 7, 2026 and October 24, 2026 respectively.
| Parameter | Messiah Elementary | RPN Memory Calculator |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (8 ratings) — better | — |
| Positive reviews | — | 0.0% of reviews |
| Number of ratings | 8 — better | — |
| Update frequency | Every 4 months | Every 4 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 11.3 — better |
| Further details — not scored | ||
| Size | 56 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | Messiah Lutheran Church & School Inc. | Neverest Limited |
Customer experience
Messiah Elementary
RPN Memory Calculator
In-app purchases
Messiah Elementary
No in-app purchases
RPN Memory Calculator
- Calculator Unit Conversions$0.99
Questions
Is Messiah Elementary free?
Is RPN Memory Calculator free?
Do Messiah Elementary or RPN Memory Calculator have ads?
Which is updated more often, Messiah Elementary or RPN Memory Calculator?
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