WattBench for FNIRSI FNB58 Downloads & RevenueWattBench for FNIRSI FNB58 · App Store
31 days old
WattBench for FNIRSI FNB58 is #118 in Utilities Paid in United States and charting in 1 of 30 countries we track.
Updated 9 Nov 2026 · rankings refresh through the day
DeveloperSeth Egger
CategoryUtilities
Price2.99 USD
Released
Rating★ 5.0 (1)
Version1.4.1
Age rating4+
First seen by us
14 Oct 2026
14 Oct 2026WattBench for FNIRSI FNB58 update history & changes
Last change · 17 events since 9 Oct 2026Full timeline ↓✏️Description updated✏️New screenshots📦Updated to version 2.0📈Entered the top 100📦Updated to version 1.4.1📈Charting in a new country🆕First spotted by AppInsider🆕Released on the App Store
Full timeline · 17 events
- ✏️WattBench for FNIRSI FNB58: description updated· US
- ✏️WattBench for FNIRSI FNB58: new screenshots9 screenshots (was 9) · US
- 📦WattBench for FNIRSI FNB58 updated to version 2.0NEW
WattBench now runs on iPad and Mac. It is a free update for everyone who owns WattBench, and one purchase covers iPhone, iPad and Mac.
• iPad: the app turns to every orientation. In a wide window, Live shows two columns, and Sessions shows the list beside the open session.
• Mac: WattBench runs on Apple-silicon Macs. While a recording runs, the Mac stays awake (the screen can still sleep).
• Recording files: share a whole session (both meters, markers, notes, tags and the test) as one file. It opens as a session in anyone's WattBench. A shared file leaves out your meters' Bluetooth IDs. It keeps their names, and an FNB58's name usually ends in its serial number.
• A session's Share button is now a menu: PDF report, Spreadsheet (CSV) or WattBench recording.
FIXES
A meter you've just switched on or plugged back in now starts sending readings by itself. Before, it could connect and then stay silent until you switched it off and on again.
• Two meters on separate devices: WattBench now says they aren't on one line and suggests Compare. Before, it could show an efficiency far above 100 % with no warning.
• Match Meters: when the two currents differ by more than a meter uses for itself, it now says by how much and asks whether something else is connected between the meters.
• Meter names you haven't changed now follow the app's language.
• Counts of one now read correctly ("1 page", not "1 pages").… more - 📈WattBench for FNIRSI FNB58 entered the top 100Top Paid · Utilities · US
- ✏️WattBench for FNIRSI FNB58: description updated· US
- ✏️WattBench for FNIRSI FNB58: new screenshots9 screenshots (was 10) · US
- ✏️WattBench for FNIRSI FNB58: renamedWattBench → WattBench for FNIRSI FNB58 · US
- ✏️WattBench for FNIRSI FNB58: description updated· DE
- ✏️WattBench for FNIRSI FNB58: new screenshots9 screenshots (was 10) · DE
- ✏️WattBench for FNIRSI FNB58: renamedWattBench → WattBench für FNIRSI FNB58 · DE
- ✏️WattBench for FNIRSI FNB58 added 9 languages+ DE + ES + FR + IT + JA + KO + PT + ZH + ZH
- ✏️WattBench for FNIRSI FNB58: app got bigger6 MB → 11 MB (+91%)
- 📦WattBench for FNIRSI FNB58 updated to version 1.4.1WattBench now speaks your language. Along with English, the app is now in German, French, Spanish, Italian, Portuguese (Brazil), Japanese, Korean and Chinese (Simplified and Traditional): every screen, PDF report, widget, Live Activity and notification. It follows your iPhone's language; to use a different one for WattBench alone, open Settings → Apps → WattBench → Language.
• Siri and Shortcuts phrases work in every language.
• The USB data lines and the meter's temperature now use your region's decimal separator, like the other readings.
• Fixes: Match Meters now allows for the small current a meter uses to run itself, and a meter that connects but sends no readings now tells you to switch it off and on.… more - 📈WattBench for FNIRSI FNB58 charting in a new countryUnited States
- 🆕WattBench for FNIRSI FNB58 first spotted by AppInsider#56 in Top Paid · Utilities · Germany
- 📦WattBench for FNIRSI FNB58 version 1.2No release notes
- 🆕WattBench for FNIRSI FNB58 released on the App Store
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Rating
5.0 ★
1 ratings
Measured
Best rank now
#118
Utilities PaidMeasured
WattBench for FNIRSI FNB58 on the App Store
App details
App ID
6816404264
Publisher
Seth Egger
On the store since
Oct 2026
Under a year
Minimum OS
iOS 17.0+
iPhone XS and later
Devices
iPhone · iPad
Content rating
4+
Languages
10
EN FR DE IT JA KO PT ZH ES ZH
Size
11 MB
Also listed in
Developer Tools
Where WattBench for FNIRSI FNB58's downloads come from Modelled
Last 30 days: organic search, browsing the store, features and paid ads.
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| United States | UtilitiesPaid | #118 |
Apps near WattBench for FNIRSI FNB58 on the chart
Utilities Paid, around #118.
Ratings
App Store, worldwide.
Rating
5.0 ★
1 ratings
Measured
Ratings
1
Measured
Review momentum
ⓘ How we measure thisNew ratings a week
under 1
4-week average
Lifetime rating
5.0★
recent stars not readable yet: new ratings are a tiny share of the total
Review momentum
55/100
faster than 59% of Utilities apps
Review 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.
About WattBench for FNIRSI FNB58
DO NOT PURCHASE THE APP IF YOU DO NOT ALREADY HAVE THE FNB58 DEVICE.
WattBench works only with the FNIRSI FNB58 USB meter. It is an independent app, not made by, affiliated with or endorsed by FNIRSI.
WattBench turns your iPhone into a wireless display, data logger and test bench for the FNIRSI FNB58 USB power meter.
Connect over Bluetooth and watch voltage, current and power live. See what your charger is doing on the USB data lines. Record a whole charge cycle with the phone locked. Then run guided tests that answer real questions: how much a power bank actually holds, how fast a phone really charges, and whether a cable is wasting power.
LIVE
• Big, glanceable voltage, current and power with peak hold
• USB data lines: D+ and D− voltages and the meter's temperature
• Charger detection: Quick Charge, USB PD, Apple, Samsung and BC 1.2 patterns named automatically
• Chart of V, A or W, or All: voltage, current and power as three stacked charts on one time axis, each with its own scale
• Full-screen chart up to the last 60 minutes, in portrait or landscape, with pinch to zoom and one cursor across all three charts
• Trip counter for energy (Wh) and capacity (mAh) without starting a recording
TESTS
• Power Bank Capacity: compares what a bank really delivers with the mAh on its label
• Device Charge: shows the fast, tapering and trickle phases of a charge, with a battery estimate
• Cable & Charger Check: guides you through load steps with a USB electronic load and grades the resistance of the cable and charger
• Data Cable Check: finds out in about a minute whether a USB cable can carry data or only charge, using a charger that signals on its data wires
TWO METERS
• Use two FNB58s at once, one before and one after a charger, cable or adapter (turn on Use two meters in Settings)
• Efficiency: power in, power out, efficiency and the energy lost
• Cable: the cable's resistance from the voltage drop between the two meters
• Compare: two ports or devices side by side
• Match Meters takes out the small offset between your two meters
• Record both meters into one session, with both in the CSV and PDF report
RECORDINGS AND REPORTS
• Recordings keep running with the screen locked and survive a crash or a Bluetooth drop; dropouts are shown honestly as gaps
• Lock Screen, Dynamic Island and Apple Watch Smart Stack show live readings while you record
• Home Screen, Lock Screen and StandBy widgets show your latest recording or the one in progress; Control Center buttons start a recording or open live readings (iOS 18)
• Automatic markers when the charger changes mode or voltage
• Session reports with zoomable charts (V, A, W or all three stacked), range statistics, a power histogram, a voltage-versus-current plot, cumulative energy, temperature and D+/D− over time
• Compare up to four sessions on one chart
• Export PDF reports and CSV files
ALERTS
• Over- and under-voltage, over-current, over-power, current below, voltage drop, disconnect, over-temperatu
WattBench works only with the FNIRSI FNB58 USB meter. It is an independent app, not made by, affiliated with or endorsed by FNIRSI.
WattBench turns your iPhone into a wireless display, data logger and test bench for the FNIRSI FNB58 USB power meter.
Connect over Bluetooth and watch voltage, current and power live. See what your charger is doing on the USB data lines. Record a whole charge cycle with the phone locked. Then run guided tests that answer real questions: how much a power bank actually holds, how fast a phone really charges, and whether a cable is wasting power.
LIVE
• Big, glanceable voltage, current and power with peak hold
• USB data lines: D+ and D− voltages and the meter's temperature
• Charger detection: Quick Charge, USB PD, Apple, Samsung and BC 1.2 patterns named automatically
• Chart of V, A or W, or All: voltage, current and power as three stacked charts on one time axis, each with its own scale
• Full-screen chart up to the last 60 minutes, in portrait or landscape, with pinch to zoom and one cursor across all three charts
• Trip counter for energy (Wh) and capacity (mAh) without starting a recording
TESTS
• Power Bank Capacity: compares what a bank really delivers with the mAh on its label
• Device Charge: shows the fast, tapering and trickle phases of a charge, with a battery estimate
• Cable & Charger Check: guides you through load steps with a USB electronic load and grades the resistance of the cable and charger
• Data Cable Check: finds out in about a minute whether a USB cable can carry data or only charge, using a charger that signals on its data wires
TWO METERS
• Use two FNB58s at once, one before and one after a charger, cable or adapter (turn on Use two meters in Settings)
• Efficiency: power in, power out, efficiency and the energy lost
• Cable: the cable's resistance from the voltage drop between the two meters
• Compare: two ports or devices side by side
• Match Meters takes out the small offset between your two meters
• Record both meters into one session, with both in the CSV and PDF report
RECORDINGS AND REPORTS
• Recordings keep running with the screen locked and survive a crash or a Bluetooth drop; dropouts are shown honestly as gaps
• Lock Screen, Dynamic Island and Apple Watch Smart Stack show live readings while you record
• Home Screen, Lock Screen and StandBy widgets show your latest recording or the one in progress; Control Center buttons start a recording or open live readings (iOS 18)
• Automatic markers when the charger changes mode or voltage
• Session reports with zoomable charts (V, A, W or all three stacked), range statistics, a power histogram, a voltage-versus-current plot, cumulative energy, temperature and D+/D− over time
• Compare up to four sessions on one chart
• Export PDF reports and CSV files
ALERTS
• Over- and under-voltage, over-current, over-power, current below, voltage drop, disconnect, over-temperatu
Latest updates
2.0
NEW
WattBench now runs on iPad and Mac. It is a free update for everyone who owns WattBench, and one purchase covers iPhone, iPad and Mac.
• iPad: the app turns to every orientation. In a wide window, Live shows two columns, and Sessions shows the list beside the open session.
• Mac: WattBench runs on Apple-silicon Macs. While a recording runs, the Mac stays awake (the screen can still sleep).
• Recording files: share a whole session (both meters, markers, notes, tags and the test) as one file. It opens as a session in anyone's WattBench. A shared file leaves out your meters' Bluetooth IDs. It keeps their names, and an FNB58's name usually ends in its serial number.
• A session's Share button is now a menu: PDF report, Spreadsheet (CSV) or WattBench recording.
FIXES
A meter you've just switched on or plugged back in now starts sending readings by itself. Before, it could connect and then stay silent until you switched it off and on again.
• Two meters on separate devices: WattBench now says they aren't on one line and suggests Compare. Before, it could show an efficiency far above 100 % with no warning.
• Match Meters: when the two currents differ by more than a meter uses for itself, it now says by how much and asks whether something else is connected between the meters.
• Meter names you haven't changed now follow the app's language.
• Counts of one now read correctly ("1 page", not "1 pages").
1.4.1
WattBench now speaks your language. Along with English, the app is now in German, French, Spanish, Italian, Portuguese (Brazil), Japanese, Korean and Chinese (Simplified and Traditional): every screen, PDF report, widget, Live Activity and notification. It follows your iPhone's language; to use a different one for WattBench alone, open Settings → Apps → WattBench → Language.
• Siri and Shortcuts phrases work in every language.
• The USB data lines and the meter's temperature now use your region's decimal separator, like the other readings.
• Fixes: Match Meters now allows for the small current a meter uses to run itself, and a meter that connects but sends no readings now tells you to switch it off and on.
1.2
Store changes
What WattBench for FNIRSI FNB58 changed on its store page: name, icon, screenshots, price, size, languages, requirements.
Description updated
New screenshots
9 screenshots (was 9)
Description updated