Comparison

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.

Head to head
About

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.

Highlights
  • Report street cleaning issues
  • Submit graffiti reports
  • Log illegal parking
  • Report damaged public property
  • AI-powered report analysis
  • View submitted requests
Read full description

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.

About

purrify Smart pH Insight

Features
Read full description

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

Solve SF4 screens
purrify Smart pH Insight4 screens

Verdict

The call

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

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

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.

Scorecard2 real differences · 8 level
Solve SF versus purrify Smart pH Insight: the parameters behind the verdict, then further details
ParameterSolve SFpurrify Smart pH Insight
PriceFreeFree
Rating4.5 (67 ratings) — better—
Positive reviews78.6% of reviews—
Number of ratings67 — better—
Update frequencyEvery 3 days — betterEvery 5 days
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS17.615.1 — better
Further details — not scored
Size179 MB22 MB
Age rating12+4+
DeveloperWoah Finally LLCSPRINGDAWN PET SUPPLIES

In-app purchases

None

Solve SF

No in-app purchases

None

purrify Smart pH Insight

No in-app purchases

Questions

Is Solve SF free?
Solve SF is free to download, with no in-app purchases.
Is purrify Smart pH Insight free?
purrify Smart pH Insight is free to download, with no in-app purchases.
Do Solve SF or purrify Smart pH Insight have ads?
Neither Solve SF nor purrify Smart pH Insight shows ads.
Which is updated more often, Solve SF or purrify Smart pH Insight?
Solve SF ships an update every 3 days, and purrify Smart pH Insight every 5 days. Most recently, Solve SF was updated on November 4, 2026 and purrify Smart pH Insight on October 30, 2026.

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