Comparison

RMS Calculator vs GeerGap

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

RMS Calculator

Features
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How should the effective value be calculated? What is the amplitude of the effective value of 100V? In such a case, do you have any experience of calculating the effective value while checking the calculation formula every time? This app can quickly convert the effective value and amplitude of AC waveforms. There are 4 types of conversion units: rms value, average value, amplitude, and Peak to Peak Amplitude. By inputting the amplitude or effective value of the AC waveform and selecting the unit of the input value, the value converted into 4 types of units will be displayed.

About

GeerGap

Features
Read full description

GeerGap 是一款专为车队编队出行设计的智能导航工具,需配合 GeerGap 专属硬件设备使用。 核心功能 蓝牙一键连接:手机通过蓝牙快速配对 GeerGap 设备,连接稳定、操作简单。 位置一键发送:队长在地图上选定目的地,点击发送即可将位置信息传输至设备。 群体导航广播:设备自动将目的地信息广播至所有成员,全队同步导航目标。 地点收藏管理:常用目的地一键收藏,下次出行直接调用,省时高效。 地点搜索:支持关键词搜索目标地点,精准定位目的地。 适用场景 企业商务车队出行、物流运输编队调度、自驾游车队组队出行、户外越野编队探险、婚庆车队统一导航。 使用说明 本应用需配合 GeerGap 专属蓝牙硬件设备使用。使用前请确保设备已开机并靠近手机,开启手机蓝牙后在 App 内搜索并连接设备,即可开始使用。 告别对讲机报地址的烦恼,让车队每一辆车都清楚知道目的地。

Screenshots

RMS Calculator2 screens
GeerGap3 screens

Verdict

The call

The clearest difference is price: GeerGap at Free against RMS Calculator's $1.99. GeerGap also leads on update cadence (weekly vs every 15 months). RMS Calculator's advantage is iOS requirement (12.0 vs 15.6). On ads, in-app purchases and device support 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

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

RMS Calculator ships an update every 15 months, GeerGap weekly. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 3 level
RMS Calculator versus GeerGap: the parameters behind the verdict, then further details
ParameterRMS CalculatorGeerGap
Price$1.99Free — better
Update frequencyEvery 15 monthsWeekly — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS12.0 — better15.6
Further details — not scored
Size8 MB1 MB
Age rating+44+
DeveloperKei SuefujiNancy Benoit

In-app purchases

None

RMS Calculator

No in-app purchases

None

GeerGap

No in-app purchases

Questions

Is RMS Calculator free?
RMS Calculator costs $1.99, with no in-app purchases.
Is GeerGap free?
GeerGap is free to download, with no in-app purchases.
Do RMS Calculator or GeerGap have ads?
Neither RMS Calculator nor GeerGap shows ads.
Which is updated more often, RMS Calculator or GeerGap?
RMS Calculator ships an update every 15 months, and GeerGap weekly. Most recently, RMS Calculator was updated on November 3, 2026 and GeerGap on October 31, 2026.

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