# Calculator Silver vs GEMINI Pump System

The clearest difference is price: GEMINI Pump System at Free against Calculator Silver's $1.99. GEMINI Pump System also leads on iOS requirement (12.4 vs 26.0). Calculator Silver's advantage is rating (4.4 vs 2.3) and review sentiment (89% vs 50%). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

GEMINI Pump System is free to download; Calculator Silver costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Calculator Silver holds the better App Store score, 4.4 against 2.3. Both are backed by a comparable volume of ratings — 5 and 3 respectively. Written reviews point the same way: 89% of Calculator Silver's written reviews are positive against 50% of GEMINI Pump System's.

Calculator Silver ships an update every 2 months, GEMINI Pump System every 43 months. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | Calculator Silver | GEMINI Pump System |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[4.4 (5 ratings)](https://appshunter.io/ios/app/calculator-silver/id432572975/reviews)** | [2.3 (3 ratings)](https://appshunter.io/ios/app/gemini-pump-system/id1314043670/reviews) |
| Number of ratings | **5** | 3 |
| Positive reviews | **88.9% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 43 months |
| Monetization | Free | Free |
| Size | 16 MB | 10 MB |
| Requires iOS | 26.0 | **12.4** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Hannes Sverrisson](https://appshunter.io/developer/428851947) | [WAYNE/SCOTT FETZER COMPANY](https://appshunter.io/developer/964180144) |

## What reviewers say

### Calculator Silver

[App page](https://appshunter.io/ios/app/calculator-silver/id432572975)

This utility app offers a comprehensive calculator experience with features like a backspace key, printable/emailable calculation history, and Apple Watch integration. Customize the look and feel, and easily copy results to other applications.

**Highlights:** Apple Watch calculator, Today View Extension, Printable/emailable history, Backspace key, Copy/paste functionality, Customizable display and themes

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

**In-app purchases:** none


### GEMINI Pump System

[App page](https://appshunter.io/ios/app/gemini-pump-system/id1314043670)

Monitor your sump pump system remotely. Check water levels, battery status, and pump operations. Features Local Link technology for offline connectivity.

**Highlights:** Remote water level check, Battery health monitoring, Pump status updates, Local Link offline connectivity, Wi-Fi restoration notification

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Calculator Silver free?

Calculator Silver costs $1.99, with no in-app purchases.

### Is GEMINI Pump System free?

GEMINI Pump System is free to download, with no in-app purchases.

### Which has better reviews, Calculator Silver or GEMINI Pump System?

Calculator Silver is rated higher. Calculator Silver averages 4.4 out of 5 from 5 ratings, while GEMINI Pump System averages 2.3 from 3 ratings.

### Do Calculator Silver or GEMINI Pump System have ads?

Neither Calculator Silver nor GEMINI Pump System shows ads.

### Which is updated more often, Calculator Silver or GEMINI Pump System?

Calculator Silver ships an update every 2 months, and GEMINI Pump System every 43 months. Most recently, Calculator Silver was updated on November 1, 2026 and GEMINI Pump System on November 2, 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.*