Slow Them Down vs Angle Finder
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Slow Them Down
This tool transforms your iPhone into a traffic speed study device. Record passing vehicles, mark their positions frame by frame, and obtain precise speed estimates. Generate detailed reports for community advocacy and traffic calming initiatives.
- Record passing traffic videos
- Frame-by-frame vehicle position marking
- Accurate speed estimation (MPH)
- Log vehicle type, direction, and timestamp
- Generate PDF traffic reports
- Automatic face and license plate blurring
- Data for traffic calming advocacy
Read full descriptionHide full description
Slow Them Down turns your iPhone into a traffic speed study tool. Record vehicles on your street, mark their positions frame by frame, and get accurate speed estimates — no radar gun required. How it works 1. Calibrate your camera using a known reference distance (vehicle length, lane width, or a manual measurement) 2. Record a video of passing traffic 3. Select two frames and mark the vehicle's position in each 4. Get an instant speed estimate in MPH Track every vehicle Log each measurement with vehicle type, travel direction, street name, and timestamp. Build a complete picture of traffic patterns in your neighborhood over days, weeks, or months. Automated reports Generate detailed PDF reports with V85 speeds, traffic volume breakdowns, speed distribution charts, and vehicle type summaries. Filter by street to isolate problem areas. Share reports directly with your city council, HOA, or neighborhood group. Privacy built in Faces and license plates are automatically detected and blurred before you share anything. The app errs on the side of caution because a blurred street sign is better than a visible plate. We also don't store the images, videos beyond the processing needed to calculate a speed. Built for advocacy Speed data is what cities use to justify traffic calming measures like speed bumps, stop signs, and road diets. Slow Them Down gives your community the same data, collected from the streets you actually live on.
Angle Finder
This tool measures angles, aligns surfaces, and reads slopes using your iPhone's sensors. It offers laser level guidance, clinometer readings, and quick calibration for various DIY tasks like hanging frames or leveling shelves. Its clean interface is designed for fast, practical use without unnecessary clutter.
- Angle measurement with real-time readings
- Laser level guidance
- Clinometer mode for slope
- Quick calibration
- Sound and haptic feedback
- Clean interface
Read full descriptionHide full description
Angle Finder helps you measure angles, align surfaces, and read slope with your iPhone. Use laser level guidance, clinometer readings, and quick calibration in one clean tool. It is built for hanging frames, leveling shelves, adjusting furniture, checking ramps, and other everyday DIY tasks. Features: - Angle measurement with clear real-time readings - Laser level guidance for horizontal and vertical alignment - Clinometer mode for slope and tilt checks - Quick calibration and zero reference - Sound and haptic feedback options - Clean interface designed for fast use Angle Finder is made for practical, everyday measuring. It helps you work faster without the clutter of a large toolbox app.
Screenshots
Verdict
The clearest difference is rating: Angle Finder at 5.0 against Slow Them Down's 3.0. Slow Them Down's advantage is in-app purchases (none vs 1). On price, ratings volume, ads and monetization model 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. Angle Finder sells 1 one-off in-app purchase. Slow Them Down asks for nothing beyond the download.
Angle Finder holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 2 and 2 respectively.
| Parameter | Slow Them Down | Angle Finder |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (2 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 2 | 2 |
| Update frequency | Every 2 months | — |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | Free |
| Devices | iPhone | iPhone |
| Requires iOS | 17.0 | 17.0 |
| Further details — not scored | ||
| Size | 4 MB | 3 MB |
| Age rating | 12+ | 4+ |
| Developer | Duncan Grazier | 林华 曹 |
In-app purchases
Slow Them Down
No in-app purchases
Angle Finder
- Pro Lifetime Unlock$4.99









