SF Study vs CaseStamp
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SF Study
This app provides parents of youth with Autism Spectrum Disorder (ASD) with resources to learn about and discuss various topics. It aims to facilitate communication and understanding between parents and their children.
- Learn about topics relevant to youth with ASD
- Facilitate communication with youth
- Support for parents of children with ASD
- Resource hub for ASD-related discussions
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SF Study - Parent Hub helps parents of youth with ASD learn about and talk to their youth regarding various topics. --------------------------------------- PRIVACY POLICY: https://dfusioninc.com/privacy.html CONTACT SUPPORT: https://dfusioninc.com/connect/
CaseStamp
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Some things you only get one chance to prove. CaseStamp makes sure you can. Free to download and free to document — everything you capture stays on your device at no cost. When you're ready to share or export your record, one $9.99 unlock covers it, permanently. No subscription, no per-report fees, no renewals. CaseStamp is your personal proof machine. Whatever you need to capture, remember, or be able to show later — do it the instant it happens. CaseStamp stamps every entry with the exact time you saved it. That's the point. FREE TO DOCUMENT - Unlimited cases and unlimited entries - Locked timestamps — every photo, video, note, and logged conversation is stamped the moment you save it, and sealed against tampering afterward - Photos and video with GPS — tagged with the time and your location. Video includes audio — know your local recording consent laws - Tamper-evident by design — every photo and video gets a SHA-256 fingerprint the instant it's saved. If even one byte of that file changes later, it's detectable - Know where each photo came from — entries show whether a photo or video was captured in CaseStamp or added from your library - Communication log — who you talked to, when, how you reached them, their contact info, any reference number, and what was said - Notes where you need them — a running narrative for the whole record, plus a short note on any individual photo or video - One-touch dates — tap any date field for a quick calendar picker, no typing required - Status tracking — mark each case Open, In Progress, No Action, or Resolved, with a days-open counter - Organize by situation — housing and landlord issues, workplace, insurance claims, vehicle incidents, purchases and warranties, service providers, medical billing, neighbor and HOA disputes, public infrastructure, government agencies, property, incidents, or other UNLOCK SHARING & EXPORT — $9.99 ONCE One purchase covers every way to get your record out of the app, forever: export and print the formal PDF report, share an individual photo or video, and copy your report as text. No subscription, no renewals, no charge per document. Your exported report is clean and formal — every entry numbered in order with its timestamp, GPS coordinates and accuracy radius where available, and file fingerprint, your photos embedded, and your logged conversations underneath. Share it with your photos and video attached, save it as a PDF, or print it. Ready for whoever needs to see it. Anyone who receives your report can verify it themselves. The SHA-256 fingerprint printed beside each entry can be checked with a command already built into any computer — no app, no account, and no CaseStamp required. Your report keeps working whether or not we do. YOUR DATA STAYS YOURS Everything lives on your phone. No account. No sign-up. No cloud. No servers. No analytics. No tracking. Nothing you log ever leaves your device unless you choose to send it. Works completely offline — in the parking garage, on the back road, in the basement with no bars. Document anything. CaseStamp remembers exactly when. CaseStamp is a record-keeping tool. It does not provide legal advice and does not guarantee any record will be accepted as evidence in any proceeding. You're responsible for gathering information lawfully. See our privacy policy and terms at www.casestamp.com
Screenshots
Verdict
The clearest difference is update cadence: CaseStamp at every 9 days against SF Study's every 6 weeks. On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
SF Study ships an update every 6 weeks, CaseStamp every 9 days. The most recent releases landed on November 4, 2026 and October 28, 2026 respectively.
| Parameter | SF Study | CaseStamp |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 6 weeks | Every 9 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 14.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 26 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | dfusion, Inc | Jesus Cardenas |
In-app purchases
SF Study
No in-app purchases
CaseStamp
No in-app purchases









