EKO POWER APP vs Sun Sizer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
EKO POWER APP
Manage your electricity account, pay bills, and track energy usage. Request utility services like meter installations and maintenance. Stay connected to your provider with this official platform.
- Energy usage insights and alerts
- Secure electricity bill payments
- Utility service request submission
- Track service request progress
- Manage electricity accounts
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EKO POWER APP is the official platform for engaging with your electricity provider. It enables customers to manage electricity payments, track energy usage, and request essential utility services — all in one place. Whether you’re monitoring consumption, settling your electricity bills, or submitting service requests, Eko Power App provides a reliable and efficient way to stay connected to your utility. Key Features 1) Energy Insights View usage patterns, receive alerts, and understand your electricity consumption to better manage costs. 2) Electricity Bill Payments Pay prepaid and postpaid electricity bills securely for supported distribution companies. 3) Utility Service Requests Submit requests for meter installation, upgrades, and maintenance, and track their progress easily.
Sun Sizer
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Sun Sizer Pro is a solar design toolkit for installers, DIY builders and off-grid homesteaders. Size the array, check the wiring, measure the site and hand the client a clean PDF — all on your phone, even with no signal on the roof. Everything runs on the device. No account, no cloud, no ads, and nothing you enter ever leaves your phone. DESIGN THE ARRAY • String Sizing — minimum and maximum panels per string from your coldest and hottest site temperatures, checked against the inverter's voltage window. • Inverter Match — DC:AC ratio, current per MPPT input and combiner checks. • Area → Panels — enter roof length, width and fire setbacks and see a to-scale layout of how many panels fit, in portrait or landscape. • Row Spacing — shade-free row pitch for a 9 am–3 pm window on the shortest day, now including sloped ground. WIRE IT SAFELY • Voltage Drop — AWG or mm², copper or aluminum, AC or DC. • Ampacity & OCPD — NEC-style conductor sizing with temperature and conduit-fill derating, and the breaker to match. • Battery Cables & Fuses — DC cable size, fuse rating and interrupt rating for battery banks. READ THE SITE • Sun Path & Tilt — a watch-face dial of the sun's path for any day, sunrise and sunset, and the best tilt for year-round, summer or winter production. • Measure Tilt & Azimuth — lay the phone on a panel to read its angle and the direction it faces, with roof pitch in twelfths. • Shade & Obstructions — mark a tree or chimney with the camera to get its height and see exactly when it shades the array. • Roof & Ground Plane — capture a roof's tilt, facing and size with the camera. • Built-in NASA climate data for most of the world, so production estimates use real monthly sunlight and temperatures for the site. ESTIMATE THE PAYBACK • Production & ROI — monthly and annual kWh, savings and payback, shown as an honest range rather than a single hopeful number. • Over the system's life — panel degradation, rising electricity prices and an optional inverter replacement, with lifetime output and cost per kWh. • Off-Grid Sizing — appliance loads, days of autonomy, battery bank, worst-month array size and inverter surge. • Charge Controller — MPPT or PWM sizing with cold-weather voltage checks. ON THE JOB • Conduit & Cable Run — walk the route with the camera and send the length straight to Voltage Drop. • Working Space — check the clearance in front of an inverter or panelboard against NEC 110.26. • Projects — enter the site and equipment once and every calculator uses them. Duplicate a project to compare two designs. • PDF reports — share a clear report with code checks, estimates and assumptions. • Equipment library — save your panels, inverters and batteries, and share whole projects with a colleague by AirDrop. BUILT FOR THE FIELD • Works completely offline. • Imperial or metric units. • A high-contrast sunlight mode for bright days on the roof. • Designed for iPhone and iPad. Camera measuring is sharpest on iPhone Pro and iPad Pro models with LiDAR, and every camera tool also accepts typed measurements. FREE AND PREMIUM String Sizing and Sun Path & Tilt are free. A one-time Premium purchase unlocks every other tool — no subscription. Sun Sizer Pro is a design aid. Always confirm your results against the equipment manufacturer's specifications and your local electrical code before installing.
Screenshots
Verdict
The clearest difference is in-app purchases: EKO POWER APP at none against Sun Sizer's 2. EKO POWER APP also leads on iOS requirement (13.0 vs 17.0). On price, update cadence, ads 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
Both are free to download. Sun Sizer sells 2 one-off in-app purchases. EKO POWER APP asks for nothing beyond the download.
EKO POWER APP ships an update every 2 weeks, Sun Sizer every 10 days. The most recent releases landed on November 5, 2026 and November 10, 2026 respectively.
| Parameter | EKO POWER APP | Sun Sizer |
|---|---|---|
| Price | Free | Free |
| Rating | 2.6 (5 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 5 — better | — |
| Update frequency | Every 2 weeks | Every 10 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Requires iOS | 13.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 125 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | Beacon Power Services | Tachena Nhubu |
In-app purchases
EKO POWER APP
No in-app purchases
Sun Sizer
- 14-day TrialFree
- Sun Sizer Pro Premium$19.99
Questions
Is EKO POWER APP free?
Is Sun Sizer free?
Do EKO POWER APP or Sun Sizer have ads?
Which is updated more often, EKO POWER APP or Sun Sizer?
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