Comparison

WinUw ROLLTECH vs iMeter Reader

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

Head to head
About

WinUw ROLLTECH

Features
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WinUw ROLLTECH ist ein Programm zur Berechnung von Wärmedurchgangskoeffizienten von Fenstern nach EN ISO 10077-1. Features: - Uw-Werte von einflügeligen und zweiflügeligen Fenstern nach DIN EN ISO 10077-1 - Temperatur der Glasscheibenoberfläche - PDF-Erstellung der Berechnungen

About

iMeter Reader

Features
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iMeter Reader is the smart way to track your electricity, gas, and water meters. Add a meter, scan readings with the camera, and see exactly how much energy you use — and what it costs you. Energy contracts are optional add-ons you attach to a meter for full tariff tracking. Whether you rent, own your home, or share a flat, iMeter Reader helps you document meter readings consistently, avoid surprise back-payments, and spot unusual consumption spikes early. — WHAT iMETER READER DOES — • AI METER SCANNING Point your camera at the meter display and the reading is captured automatically. It runs on your device first — instant, offline, and private. When a meter is hard to read, optional cloud AI steps in for a confident result. Works with analog (Ferraris), digital, and smart meters. • ELECTRICITY, GAS & WATER Track electricity and gas meters — and hot and cold water meters too. Single- and dual-tariff (day/night) electricity meters are supported. Manage your main home, holiday flat, small business or heat pump meter, all in parallel. • AI ASSISTANT Ask the built-in AI assistant questions about your meters, contracts, bills, and consumption in plain language. • UPLOAD OR PHOTOGRAPH A CONTRACT OR INVOICE Upload a PDF — or photograph a paper contract or bill — and AI fills the form for you. iMeter Reader automatically detects whether the document is a contract or an invoice, then extracts tariff name, provider, base price, price per kWh, annual consumption, monthly payment, contract length, notice period, price guarantees, and sign-up bonuses. • RUNNING COSTS & USAGE PER CONTRACT The meter comes first — add a contract whenever you like. iMeter Reader then tracks the consumption inside the contract period, recalculated automatically each time you add a reading dated within it. Enter your prices and it shows your accumulated running costs and total usage to date — and reminds you before the contract ends or a price guarantee expires. • EMAIL YOUR PROVIDER Need to contact your energy provider? If they're listed in the app you can email them directly; if not, start from a built-in template. When your contract details (provider, meter number) and your saved profile address are filled in, they're placed into the email automatically — you just check it and send from your own device. It all happens locally, so your data stays private. • USAGE ANALYSIS & CHARTS Generate bar, line, or area charts per meter. Compare months and spot seasonal patterns at a glance. • READING REMINDERS Set weekly, bi-weekly, or every-4-weeks reminders. • ELECTRICITY & GAS TARIFF COMPARISON — PER METER Compare tariffs for a specific meter without leaving the app, powered by CHECK24 (Germany) — no account needed. Open it from the meter or its usage chart: the postal code and an annual consumption estimate come from that meter, and ten common filters start with a pre-set selection you can change, clear or reset. Filters are saved per meter on your device. Loads only with your explicit consent. • PRIVATE BY DEFAULT Readings stored locally — AI features opt-in only. No forced sign-up, no ads, no background tracking. Optional AI features and the tariff comparison use the cloud only with your explicit consent — everything else runs locally. **Manage your devices** in Settings — see where iMeter Reader is installed and sign out remotely. Anonymous usage statistics (counts only) can be turned off any time in Settings. — WHO IT'S FOR — • Renters who want to check utility bills • Homeowners with heat pumps or solar PV • Flatshares with shared electricity, gas, or water meters • Small businesses and home offices • Anyone planning to switch providers who needs reliable usage data — ACCESSIBILITY & LANGUAGES — iMeter Reader is available in English, German, Arabic, and Turkish — including full RTL layout for Arabic. Dynamic font sizes, high contrast, and system dark mode are built in.

Screenshots

WinUw ROLLTECH3 screens
iMeter Reader4 screens

Verdict

The call

The clearest difference is update cadence: iMeter Reader at every 6 days against WinUw ROLLTECH's every 25 months. 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

WinUw ROLLTECH ships an update every 25 months, iMeter Reader every 6 days. The most recent releases landed on September 17, 2026 and September 21, 2026 respectively.

Scorecard1 real difference · 5 level
WinUw ROLLTECH versus iMeter Reader: the parameters behind the verdict, then further details
ParameterWinUw ROLLTECHiMeter Reader
PriceFreeFree
Update frequencyEvery 25 monthsEvery 6 days — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.5 — better15.0
Further details — not scored
Size50 MB121 MB
Age rating4+12+
DeveloperSommer Informatik GmbHAhmad AlAlloush

In-app purchases

None

WinUw ROLLTECH

No in-app purchases

None

iMeter Reader

No in-app purchases

Questions

Is WinUw ROLLTECH free?
WinUw ROLLTECH is free to download, with no in-app purchases.
Is iMeter Reader free?
iMeter Reader is free to download, with no in-app purchases.
Do WinUw ROLLTECH or iMeter Reader have ads?
Neither WinUw ROLLTECH nor iMeter Reader shows ads.
Which is updated more often, WinUw ROLLTECH or iMeter Reader?
WinUw ROLLTECH ships an update every 25 months, and iMeter Reader every 6 days. Most recently, WinUw ROLLTECH was updated on September 17, 2026 and iMeter Reader on September 21, 2026.

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