Comparison

Volt vs GMS

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

Head to head
About

Volt

Features
Read full description

Volt is a generator management app for the private neighbourhood generators of Iraq. It puts in one place what used to be spread between a notebook, a loose page and memory: who subscribes, how many amperes he takes, what he owes this month, what was collected from him, and how much is still in the collector's pocket tonight. ■ Who it is for • The owner of a private generator who wants an honest figure every month. • The collector who takes cash door to door and needs a receipt for every amount and a clear settlement. • Small generators with dozens of subscribers, and large ones with hundreds. ■ The subscriber register • Register a subscriber once: name, phone, amperes, subscription type, area. • Find him by name or meter number in a second, with his state in plain view: active or cut, in debt or clear. • His balance builds from his own invoices and payments, so there is no hand arithmetic and no second notebook. ■ Pricing and invoices • Set the ampere price for each subscription type, month by month. • Generate every subscriber's invoice in one tap, computed from his amperes and his type. • An issued invoice keeps its figures: a later change to the price never rewrites it. ■ Collection without leakage • Settle a bill in full, or take part of it and carry the rest as debt on the subscriber's balance. • Write off the remainder when you choose to, as a recorded line that is not forgotten. • Every collection produces a receipt you can share with the subscriber on the spot. ■ Collectors and the generator's cash • Each collector has an account and a wallet: what he takes at the door appears in it the moment he takes it. • Your first screen shows what is in the collectors' hands right now. • At settlement he hands over what he holds and his account closes on one unambiguous line. ■ Expenses and real profit • Record fuel, maintenance, salaries and the rest. • The month states its honest figure: collected minus spent, and where the difference went. • Outstanding dues ranked from largest to smallest, so you know whose door to knock on first. ■ Pairing a subscriber without a printed slip • Show the pairing code on your screen for the subscriber to read with the Volt Subscriber app. • He stays signed in with no password, and sees his invoices, his balance and his receipts. • Changed his phone? Issue a new code in seconds. ■ Announcements in one place • Announce the month's pricing, a maintenance window, or any operating news. • Every paired subscriber reads it in his own app, so you call nobody one by one. ■ Transparency with the subscriber • He sees his invoice, his balance and the date of every collection, so questions and disputes fall away. • The receipt you share carries the invoice number, the amount and the remainder, readable on any phone. ■ Your data is safe • Kept on our servers and backed up, so a lost or replaced phone loses nothing. • You sign in with your phone number and your password, and nobody reads your ledger but you and whom you allow. • You can request deletion of your account and your data at any time from inside the app. ■ Built for daily use • A full Arabic interface with English for those who prefer it, switched from the very first screen. • Readable in sunlight and on small screens, and tolerant of a weak network without losing what you typed. Try it free: the demo door inside the app opens a complete generator with its data before you create an account. Activation and questions: WhatsApp +964 774 840 0001

About

GMS

Features
Read full description

Generator App connects subscribers with neighbourhood generator owners in Iraq and makes subscribing, paying and tracking bills simple for everyone. For subscribers: - Find a generator on the map or scan the QR code on it. - Request a subscription with your amps and start date — you're notified when the owner approves. - See your monthly bills and the per-amp price clearly. - Pay the way that suits you: – Cash at the generator: show your code and the cashier sees what you owe instantly. – Transfer to the owner's wallet or account with a receipt photo. – Online with ZainCash. - Get the payment receipt on your phone instantly, with a full payment history. - Send and follow complaints in the app. - Subscribe to several generators from one account. For generator owners: - Manage subscribers, subscription requests and amp changes. - Set the per-amp price for this month, several months or permanently — subscribers are notified automatically. - Automatic monthly bills at the start or end of the month, your choice. - A fast cash desk at the generator: search by subscriber number or scan their code, then tap "Received". - Confirm transfers once they reach your wallet. - Multiple payout accounts, staff and permissions, complaints and collection reports. Payments go straight to the generator owner's own account — the app never holds money. Available in Arabic and English. By B-Tech, Baghdad.

Screenshots

Volt4 screens
GMS4 screens

Verdict

The call

The clearest difference is update cadence: Volt at daily against GMS's every 10 days. 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

Volt ships an update daily, GMS every 10 days. The most recent releases landed on October 8, 2026 and October 24, 2026 respectively.

Scorecard1 real difference · 5 level
Volt versus GMS: the parameters behind the verdict, then further details
ParameterVoltGMS
PriceFreeFree
Update frequencyDaily — betterEvery 10 days
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.015.0
Further details — not scored
Size7 MB5 MB
Age rating4+4+
DeveloperSajjad AhmedMohammed Attiyah

In-app purchases

None

Volt

No in-app purchases

None

GMS

No in-app purchases

Questions

Is Volt free?
Volt is free to download, with no in-app purchases.
Is GMS free?
GMS is free to download, with no in-app purchases.
Do Volt or GMS have ads?
Neither Volt nor GMS shows ads.
Which is updated more often, Volt or GMS?
Volt ships an update daily, and GMS every 10 days. Most recently, Volt was updated on October 8, 2026 and GMS on October 24, 2026.

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