Solve SF vs purrify Smart pH Insight
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Solve SF
Easily report issues to the city of San Francisco. Submit requests for street cleaning, graffiti, illegal parking, and more by taking a photo. AI automatically analyzes and categorizes your reports for the 311 service.
- Report street cleaning issues
- Submit graffiti reports
- Log illegal parking
- Report damaged public property
- AI-powered report analysis
- View submitted requests
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Report any issue to the city of San Francisco! An alternative 311 app for the residents of San Francisco. Solve SF is the easiest way to submit street cleaning, graffiti, illegal parking, street and sidewalk issues, damaged public property, park issues, tree maintenance, homeless encampment reports, and more to the San Francisco 311 service. To submit a request just take a photo and click submit. AI analyzes, describes, and categorizes your reports - so you don't have to. You can view your recently submitted requests within the app or on the official 311 service. This app has the necessary approval to use the San Francisco 311 API to submit requests to the San Francisco 311 service, but it is not affiliated with the official SF 311 app or the City of San Francisco government.
purrify Smart pH Insight
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Purrify Smart pH Insight is the companion app for our innovative color-change cat litter. Easily log your cat’s urine pH, track long-term health trends, and manage multiple cats with personalized profiles. Stay informed with easy-to-read insights and helpful recommendations – all designed to support your cat’s well-being. Features: • Smart urine pH monitoring with instant color-change reference • Health trend charts to track your cat’s progress over time • Multi-cat profiles with individual pH logs • Clean, simple interface designed for cat owners
Screenshots
Verdict
The clearest difference is device support: purrify Smart pH Insight at 3 against Solve SF's 1. purrify Smart pH Insight also leads on iOS requirement (15.1 vs 17.6). On price, update cadence, ads and in-app purchases 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.
Solve SF ships an update every 3 days, purrify Smart pH Insight every 5 days. The most recent releases landed on November 4, 2026 and October 30, 2026 respectively.
| Parameter | Solve SF | purrify Smart pH Insight |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (67 ratings) — better | — |
| Positive reviews | 78.6% of reviews | — |
| Number of ratings | 67 — better | — |
| Update frequency | Every 3 days — better | Every 5 days |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 17.6 | 15.1 — better |
| Further details — not scored | ||
| Size | 179 MB | 22 MB |
| Age rating | 12+ | 4+ |
| Developer | Woah Finally LLC | SPRINGDAWN PET SUPPLIES |
In-app purchases
Solve SF
No in-app purchases
purrify Smart pH Insight
No in-app purchases
Questions
Is Solve SF free?
Is purrify Smart pH Insight free?
Do Solve SF or purrify Smart pH Insight have ads?
Which is updated more often, Solve SF or purrify Smart pH Insight?
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