Comparison

OPGMobility IOT vs MultiBMS

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

Head to head
About

OPGMobility IOT

Features
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OPG Mobility: A Strong Legacy of Innovation,Inspiring Every Journey with Clean and Smart Solutions At OPG Mobility (formerly known as Okaya EV), we are transforming the future of transportation in India. With over 4 decades of expertise in battery technology and electronics, we are now leading the charge in the electric vehicle revolution. Our mission is clear, to provide clean, affordable, smart, and safe mobility solutions that empower individuals and businesses while driving a greener and more sustainable future. With a legacy of trust and innovation, OPG Mobility is your complete solution provider for all EV needs, offering 100% in-house components aligned with the Make in India initiative. Every journey with OPG Mobility is powered by innovation, performance, and reliability, inspiring a smarter and sustainable tomorrow.

About

MultiBMS

Monitor multiple Bluetooth-enabled battery management systems from your iPhone. View detailed pack voltage, cell voltages, current, power, state of charge, and temperature. Build custom battery groups and visualize charging activity.

Highlights
  • Connect to multiple BMS devices
  • Detailed pack and cell diagnostics
  • Build custom parallel/series battery groups
  • Visualize charging and discharging
  • Apple Watch companion preview
  • Supports JiKong and JBD/Xiaoxiang hardware
Features
Currently charting
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Most battery apps show you one pack. MultiBMS shows you the whole system. Connect every Bluetooth BMS you own, group them the way they're actually wired, and watch the entire bank behave as one — voltage, current, power, state of charge, temperature, capacity and every individual cell, live. SEE THE WHOLE BANK AT ONCE Build a group from any number of packs and MultiBMS aggregates it properly — parallel banks sum their current and capacity, series strings sum their voltage. One gauge for the bank, and every pack underneath it. Six batteries in an off-grid build read as one system instead of six apps you keep switching between. EVERY CELL, FOUR WAYS Bars, heat map, rows or grid. Minimum, maximum and delta across the whole bank or per pack, with the weak cell called out before it becomes a problem. Watch the balancer work in real time. RECORD WHAT ACTUALLY HAPPENED Start a recording and MultiBMS logs the run at one-second resolution. Pick a Battery Bank preset for a house system or a Vehicle preset for a ride, choose exactly which metrics to capture, and add per-cell and per-pack detail when you want the full picture. A live dyno cockpit shows the run as it happens — speed, volts, amps, kilowatts, state of charge, G-force — with peak draw, peak power and energy pulled tracked as you go. REPLAY IT LIKE FOOTAGE Cinema Replay plays any recorded run back as a scrubbing timeline with every channel drawn together. Find the moment the voltage sagged, the moment the pack got hot, the moment you hit peak power. Then export it: CSV for a spreadsheet, a formatted PDF report, or a share card that fits in a message. ON YOUR WRIST The Apple Watch app is a full second screen, not a notification relay. A live dyno cockpit that mirrors the run on your phone. Race Control with lap timing and per-lap energy. Ride profiles for e-bikes, karts and carts with GPS speed, distance and G-force. Fleet and cell views for the whole bank. Start and stop a recording from your wrist and the phone follows. ALERTS THAT MATTER Set your own limits for pack temperature, low pack voltage and low cell voltage. MultiBMS tells you the moment something crosses the line, whether you're looking at the app or not. MAKE IT LOOK LIKE YOUR RIG Thirteen interface skins, from an off-grid instrument bay to a racing cluster, marine, aviation, industrial and a retro terminal. Four dyno themes for the recorder. Four charge-flow animations — rail, orbit, mist and plasma — so charging and discharging read at a glance from across the room. WORKS WITH YOUR HARDWARE MultiBMS speaks 30 Bluetooth Low Energy BMS protocols covering drop-in lithium packs, server-rack storage, active balancers, shunt meters and portable power stations. Support varies by model and firmware — the full, current compatibility list lives at multibms.com. Not sure yours is covered? Email support@multibms.com with your battery and BMS model. We add protocols, and we're quick about it. READ-ONLY BY DESIGN MultiBMS reads telemetry. It does not write settings, change limits or reconfigure your BMS. Your battery keeps doing exactly what it was doing. NO ACCOUNT, NO SUBSCRIPTION No sign-up, no cloud, no recurring charge. Your data stays on your device. Premium skins are optional one-time purchases.

Screenshots

OPGMobility IOT3 screens
MultiBMS4 screens

Verdict

The call

The clearest difference is price: OPGMobility IOT at Free against MultiBMS's $0.99. OPGMobility IOT also leads on in-app purchases (none vs 11). MultiBMS's advantage is update cadence (every 4 days vs every 5 weeks) and chart position (#190 vs unranked). On ads, device support and iOS requirement 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

OPGMobility IOT is free to download; MultiBMS costs $0.99 up front. MultiBMS sells 11 one-off in-app purchases. OPGMobility IOT asks for nothing beyond the download.

UpkeepUpdate frequency

OPGMobility IOT ships an update every 5 weeks, MultiBMS every 4 days. The most recent releases landed on September 19, 2026 and September 22, 2026 respectively.

Scorecard4 real differences · 7 level
OPGMobility IOT versus MultiBMS: the parameters behind the verdict, then further details
ParameterOPGMobility IOTMultiBMS
PriceFree — better$0.99
Rating—4.0 (4 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—4 — better
Update frequencyEvery 5 weeksEvery 4 days — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Paid
Best chart rank—#190 — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Apple Watch — better
Requires iOS15.615.0 — better
Further details — not scored
Size51 MB36 MB
Age rating4++4
DeveloperEFFICIENT IT AND ELECTRONICS SERVICES PRIVATE LIMITEDstefan peters

In-app purchases

None

OPGMobility IOT

No in-app purchases

11 purchases

MultiBMS

One-time11
  • E-Bike Rally$0.99
  • Bus Life$0.99
  • Off Grid$0.99
Show 8 more
  • Minimal White$0.99
  • Retro Terminal$0.99
  • Marine$0.99
  • Arctic Ice$0.99
  • Matrix Code$0.99
  • Emergency$0.99
  • CAT Equipment$0.99
  • Aviation$0.99

Questions

Is OPGMobility IOT free?
OPGMobility IOT is free to download, with no in-app purchases.
Is MultiBMS free?
MultiBMS costs $0.99, and also offers in-app purchases.
Do OPGMobility IOT or MultiBMS have ads?
Neither OPGMobility IOT nor MultiBMS shows ads.
Which is updated more often, OPGMobility IOT or MultiBMS?
OPGMobility IOT ships an update every 5 weeks, and MultiBMS every 4 days. Most recently, OPGMobility IOT was updated on September 19, 2026 and MultiBMS on September 22, 2026.

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