ISO Today vs Alerts by SDGE
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ISO Today
Track California's power grid status, energy prices, and renewable production. Receive alerts for conservation needs and monitor supply adequacy up to seven days ahead. View detailed supply breakdowns and historical data.
- Monitor resource adequacy capacity
- View grid status and demand
- Renewables and supply graphs
- Wholesale energy price map
- Receive Flex Alerts
- Track calendar events
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Monitor California ISO power grid conditions, prices and renewable production, receive notifications and track calendar events with this free mobile application. Features: · Monitor available resource adequacy capacity to identify when energy supply might be tight, up to 7 days in advance. · View grid status and available capacity measured against the current demand and the forecasted peak. · View renewables and supply graphs as stacked charts. · View peak and daily production data for past dates on the renewables trend graph. · View breakdown of supply and renewables serving the ISO. · Monitor emissions. · View wholesale energy prices on the price map. Use the slider to easily filter out nodes based on Location Marginal Prices (LMP). · Compare demand and net demand plus historic data. · Users can receive Flex Alerts to notify them when conservation is needed, get energy system notifications, along with ability to add ISO meetings and events to their calendar. About the California ISO: As the nonprofit public-benefit corporation ensuring reliability for most of California's and a portion of Nevada's high-voltage power grid, the California Independent System Operator (ISO) is helping advance a smarter, cleaner, and more reliable energy future. The ISO operates a competitive energy market that balances supply with demand and has a key role in achieving clean energy goals in the West. For more information about California ISO, visit www.caiso.com.
Alerts by SDGE
Receive timely updates and information about potential and active Public Safety Power Shutoffs (PSPS) in your area. Track outages affecting saved locations, find nearby resource centers, and get estimated restoration times.
- PSPS notifications
- Outage tracking
- Saved location alerts
- Resource center locator
- Estimated restoration times
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Alerts by SDG&E will help you get information and updates regarding potential and active Public Safety Power Shutoff (PSPS) affecting your area. Easily get the status and timely updates for PSPS affecting saved locations, understand the resource centers available near your outage location and get real-time information regarding your estimated restoration time.
Screenshots
Verdict
The clearest difference is update cadence: Alerts by SDGE at monthly against ISO Today's every 3 months. On price, rating, review sentiment and ratings volume 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. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 4.2 for ISO Today against 4.2 for Alerts by SDGE. Both are backed by a comparable volume of ratings — 103 and 47 respectively. Written reviews are what separate them: 74% of ISO Today's written reviews are positive against 73% of Alerts by SDGE's.
ISO Today ships an update every 3 months, Alerts by SDGE monthly. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.
| Parameter | ISO Today | Alerts by SDGE |
|---|---|---|
| Price | Free | Free |
| Rating | 4.2 (103 ratings) — better | 4.2 (47 ratings) |
| Positive reviews | 74.1% of reviews — better | 72.7% of reviews |
| Number of ratings | 103 — better | 47 |
| Update frequency | Every 3 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 13.0 — better | 14.0 |
| Further details — not scored | ||
| Size | 11 MB | 17 MB |
| Age rating | 4+ | 4+ |
| Developer | California Independent System Operator Corporation | San Diego Gas & Electric |
Customer experience
ISO Today
Alerts by SDGE
Bugs and requests
ISO Today
Reported bugs
10 issues- App crashes on launch
- Calendar crashes instantly
- Alerts cannot be cleared
- Page does not scroll properly with alerts
- Items below Calendar unreachable on smaller screens
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- Text size for alerts too small and not adjustable
- App crashes when trying to view alert
- Alerts persist after reading
- Notifications are persistent even after refreshing
- App exits multiple times in a minute
Requested features
7 requests- Localized alerts
- Ability to turn on/off alerts for specific locales
- Multi-day and seasonal trends
- Home-screen widget
- See today's demand vs. last year/week
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- More differentiation on negative pricing levels
- 7-day history for a node
Alerts by SDGE
Not enough reviews yet to summarise bugs or requests.
In-app purchases
ISO Today
No in-app purchases
Alerts by SDGE
No in-app purchases
Questions
Is ISO Today free?
Is Alerts by SDGE free?
Which has better reviews, ISO Today or Alerts by SDGE?
Do ISO Today or Alerts by SDGE have ads?
Which is updated more often, ISO Today or Alerts by SDGE?
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