SSB Lithium vs OnSun
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
SSB Lithium
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This app monitors your SSB Lithium Starting battery status and BMS parameters. Equipped with brand new technology - JUMP START button to wake up your battery when the BMS low voltage protection is triggered.
OnSun
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OnSun predicts your rooftop solar seven days ahead and tells you the best time to use power. Use the app to look ahead and schedule the laundry, the dishwasher and the EV charger on energy you already made, instead of buying it back at night. WHAT ONSUN DOES โข 7-day solar forecast: solar generation in kWh, showing how much your panels will produce, and when, through each day of the week ahead, customized for your system โข Predicts solar output and solar irradiance for your panels and your location โข A confidence range on every solar prediction, so you see best and worst case โข Tells you when to run appliances, then sends a solar reminder โข Solar savings per appliance - what you save, in dollars and in kWh โข Solar usage and solar self consumption shown over time โข Sunny days flagged a week out, with the peak hours worth planning around โข Rainfall overlaid on the sunshine, so you can pick the best time to dry the laundry if you don't use a dryer SOLAR APPLIANCES YOU CAN SCHEDULE โข Washer and dryer โข Dishwasher โข Solar EV charging - an EV charging schedule built around the sunniest days โข Solar pool pump timing โข Air conditioning and space heater โข Oven and dehumidifier WORKS WITH ANY INVERTER It makes no difference whose inverter you have. OnSun never connects to your inverter. No hardware, no wiring, no login. Your location, panel size and the local weather are all it needs. Compare the forecast against what you actually get and adjust the performance setting to sharpen it. An inverter app only shows what already happened, when the chance to do anything is gone. OnSun looks ahead instead - part calculator, part planner, part weather app. WHY TIMING BEATS EXPORTING Every kWh you use while the sun is up is a kWh you don't buy from the grid at the electricity prices your utility charges. Solar export earns a net metering credit worth a fraction of that, and even off-peak rates cost more than sunshine. Shift the load into daylight and you reduce your electricity bill. SOLAR SCHEDULING, SET ONCE Every appliance draws a different number of watts. A dishwasher runs in short bursts, an EV charger pulls for hours. OnSun matches each power profile against your PV forecast, works out when to run appliances, then sends the notification or alert when it is time. HOW THE PV FORECAST WORKS Professional weather data, modelled against the sunlight your panels actually capture. The same modelling used for large commercial rooftop PV systems, now in your pocket. There is no cheap electricity like the power you already own. FREE vs PRO Free: 3-day forecast, 2 appliances. Pro: full 7-day forecast, unlimited appliances, more frequent forecast updates, and long-term home energy insights so you can watch the power bill and the energy bill come down. You paid for the panels. Download OnSun free and put your home solar to work. Terms of Use: https://onsun.app/terms-of-service.html Review: "I'm terrible at remembering to make the most of my solar and end up giving it all away to the grid, but this sends me reminders and plans the next few days for me. The notifications are great, I actually get up and put the washer on! Even started meal prepping with the oven at peak solar time. Can see this saving me from wasting power real quick." - Andytar
Screenshots
Verdict
The clearest difference is in-app purchases: SSB Lithium at none against OnSun's 3. SSB Lithium also leads on update cadence (every 4 days vs every 11 days) and iOS requirement (9.0 vs 16.0). On price, ads and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. OnSun sells 3 in-app purchases, starting at $2.99 per month. SSB Lithium asks for nothing beyond the download.
SSB Lithium ships an update every 4 days, OnSun every 11 days. The most recent releases landed on November 8, 2026 and November 9, 2026 respectively.
| Parameter | SSB Lithium | OnSun |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 4 days โ better | Every 11 days |
| Ads | No | No |
| In-app purchases | No โ better | Yes |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 9.0 โ better | 16.0 |
| Further details โ not scored | ||
| Size | 7 MB | 47 MB |
| Age rating | 4+ | 4+ |
| Developer | Super Start Batteries Pty Ltd | VIREO ENERGY PTY LTD |
In-app purchases
SSB Lithium
No in-app purchases
OnSun
- Pro$2.991 Month
- OnSun Pro (Yearly)1 Year trial$24.991 Year
- Pro7 Days trial$24.991 Year









