Comparison

MASTECH vs Meteor for 121GW

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

Head to head
About

MASTECH

Features
Read full description

Taking and reading measurements are now easier with the Mastech app. Whether you’re at home, on the go, or working in the field, the Mastech app allows you to easily take and view your readings on your iPod, iPhone or iPad. - Stream measurements in real time - App displays reading and units - Shows function switch position and button presses - Save readings to device - Switch between multiple meters quickly and easily

About

Meteor for 121GW

This app connects to a specific Bluetooth multimeter to display readings and offers enhanced control features. It includes options for spoken measurements, a continuity buzzer, and dark mode, while currently lacking multi-meter support.

Highlights
  • Landscape mode control buttons
  • Spoken measurement readings
  • Continuity buzzer option
  • Dark mode support
  • Connect/disconnect functionality
Read full description

Meteor is an indie, third-party* app for use with the EEVBlog 121GW Bluetooth-LE multimeter. It performs most of the same functions as the EEVBlog app, but adds some new features: + Control buttons available in landscape mode + Option for spoken measurements (using iOS voice synthesizer) + Option for continuity buzzer + Dark mode option + Connect/disconnect button and disconnect-status labels There are, however, a couple of features missing from the EEVBlog app: - Does not yet support multiple meters - No math mode for multiple meters This is a public beta, designed to get as much feedback and testing from 121GW users as possible. While I believe any public version is as bug-free as possible, please be aware that this is beta software and should not be relied on for critical uses until actual v1.0 release. At app startup, you should see a page listing any 121GWs that are advertising near you. Or, at any time you can tap and hold the meter icon at the bottom-left of the main screen to bring up the meter-scan page. (This page is also available from the app menu, which you access through the button at the bottom-right of the main screen.) The meter icon at the bottom-left of the screen should turn blue when you are connected to a meter. If you don't get any readings from the meter, please try tapping the meter button once to disconnect, and then again to reconnect.   If you tend to switch between an iPhone and iPad, or between two phones, you may find that it's easier to establish a new connection by turning the meter itself off and back on, and/or turning the meter's BT off and back on. * Love it or hate it, Meteor was not produced, endorsed, or licensed by EEVBlog. Please do not contact EEVBlog for support - instead email support@westerncomputational.com with any bugs, help requests, and feature suggestions. Thanks!

Screenshots

MASTECH4 screens
Meteor for 121GW4 screens

Verdict

The call

The clearest difference is update cadence: Meteor for 121GW at every 11 months against MASTECH's every 76 months. Meteor for 121GW also leads on iOS requirement (10.0 vs 12.0). On price, 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

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

MASTECH ships an update every 76 months, Meteor for 121GW every 11 months. The most recent releases landed on November 6, 2026 and November 2, 2026 respectively.

Scorecard2 real differences · 8 level
MASTECH versus Meteor for 121GW: the parameters behind the verdict, then further details
ParameterMASTECHMeteor for 121GW
PriceFreeFree
Rating—4.7 (3 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—3 — better
Update frequencyEvery 76 monthsEvery 11 months — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS12.010.0 — better
Further details — not scored
Size7 MB22 MB
Age rating4+4+
DeveloperMGL APPA CORPORATIONWestern Computational, Inc.

In-app purchases

None

MASTECH

No in-app purchases

None

Meteor for 121GW

No in-app purchases

Questions

Is MASTECH free?
MASTECH is free to download, with no in-app purchases.
Is Meteor for 121GW free?
Meteor for 121GW is free to download, with no in-app purchases.
Do MASTECH or Meteor for 121GW have ads?
Neither MASTECH nor Meteor for 121GW shows ads.
Which is updated more often, MASTECH or Meteor for 121GW?
MASTECH ships an update every 76 months, and Meteor for 121GW every 11 months. Most recently, MASTECH was updated on November 6, 2026 and Meteor for 121GW on November 2, 2026.

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