Max Zs Values Downloads & RevenueMax Zs Values · App Store
Max Zs Values is #27 in Reference Paid in United Kingdom and charting in 1 of 30 countries we track.
Updated 11 Nov 2026 · rankings refresh through the day
25 Sep 2026Full timeline · 4 events in the last 12 months
- 📈Max Zs Values new best rank in the overall chart: #149Top Paid · All Apps · GB
- 📈Max Zs Values entered the top 10Top Paid · Reference · GB
- 🆕Max Zs Values first spotted by AppInsider#48 in Top Paid · Reference · United Kingdom
- 🆕Max Zs Values released on the App Store
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Reference PaidMax Zs Values at a glance
AI summary written from our chart and store data, 2026-10-16. It can be wrong: check the numbers above.
A specialized reference tool for UK electricians that calculates and lists maximum permitted earth loop impedance (Zs) values according to BS 7671 standards. The app holds the #3 position in the GB Paid Reference category, indicating strong niche dominance despite a low overall volume of user ratings.
Similar apps: Electrical Calculator, Cable Sizing Calculator, Pro Certs Electrical Certification
Max Zs Values on the App Store
App details
Max Zs Values downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Where Max Zs Values's downloads come from Modelled
Last 30 days: organic search, browsing the store, features and paid ads.
Active users
All platforms, worldwide. Free with an account.
How this is calculated
Business model: Ad-led
How Max Zs Values makes money: subscriptions, one-off purchases and ads.
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| United Kingdom | ReferencePaid | #27 |
Apps near Max Zs Values on the chart
Reference Paid, around #27.
Ratings
App Store, worldwide.
Review momentum
ⓘ How we measure thisReview momentum (0-100) blends how fast the app collects ratings compared with other apps in its category (60%), whether that pace is speeding up (25%) and what recent raters give it (15%; recent stars well below lifetime pull it down). Ratings counts are read daily. A jump usually means a launch, a feature, ads or a new review prompt.
What users say about Max Zs Values
From recent reviews.
About Max Zs Values
- 100% BS 7671 Zs Values
- 80% On Site Guide Zs Values
- 0.4 (s) second disconnection times
- 0.2 (s) second disconnection times
- 5 (s) second disconnection times
- Common BS EN Devices:
Scroll through the list of protective devices and select the device rating to calculate the maximum permitted Zs value for your selected protective device and rating combination.
- 60947-2 MCCB's Zs Tables:
Look up the maximum permitted Zs tables for a selection of MCCB manufacture devices (some).
- Maximum Zs Features:
+ Maximum Disconnection Times
+ BS 7671 18th Edition Zs Tables
+ Fuse's
+ MCB's
+ RCBO's
+ RCD's in TT earthing systems
+ Max REC Ze values
+ 100% values
+ 80% values
+ 0.4 second disconnection times
+ 0.2 second disconnection times
+ 5 second disconnection times
+ Uo 55v (U 110v) single phase and Uo 63.5v (three
phase) Zs values
+ BS EN 60947-2 MCCB manufacture device charts
(some)
There is now a new "Zs Converter" to convert old Zs values to the new 18th edition 230v Cmin Zs values.
Check out our collection of electrical apps such as the "Pro Certs" Electrical Certification App for iPad.
