Ruler vs uFTP Server2
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Ruler
Measure lengths and distances in the real world using your device's camera. This app utilizes augmented reality to let you draw lines, measure multiple segments, and calculate perimeters with ease.
- Augmented reality measurement
- Single line measurement
- Chain measurement for multiple segments
- Perimeter calculation
- Color-coded measures
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New AR technology make easy to measure lenght on the fly with Ruler. Single measure ruler - draw one line with length. Chain measure ruler - measure several lines one by one. Perimeter measure ruler - several lines with close perimeter form last point to first. Colors - for separate different measures.
uFTP Server2
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This is the iOS version of uFTP Server, a very small FTP Server designed for fast file transferring without hair struggling. Anonymous user or a single user authentication, without complex and boring configuration. The mainly purpose to develop this small utility is to make it easy when transfer files between Apple products and other devices. Although it is really very small, but it supports almost all FTP commands and has very high performance when transferring files. A simple filter file can be used to hide file and directories for FTP client, and another file use the same rules can be used to speed up big folder searching.
Screenshots
Verdict
The clearest difference is price: Ruler at $1.99 against uFTP Server2's $6.99. Ruler also leads on iOS requirement (13.1 vs 15.6). On update cadence, 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
Ruler costs $1.99 and uFTP Server2 $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Ruler ships an update every 9 days, uFTP Server2 weekly. The most recent releases landed on November 11, 2026 and November 8, 2026 respectively.
| Parameter | Ruler | uFTP Server2 |
|---|---|---|
| Price | $1.99 — better | $6.99 |
| Rating | 4.3 (597 ratings) — better | — |
| Positive reviews | 73.9% of reviews | — |
| Number of ratings | 597 — better | — |
| Update frequency | Every 9 days | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.1 — better | 15.6 |
| Further details — not scored | ||
| Size | 1 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Anna Koynova | 斌 虞 |
Bugs and requests
Ruler
Reported bugs
3 issues- Crashes when changing color
- Photos come out black
- Measurements are inaccurate
Requested features
5 requests- Allow setting units of measurement
- Improve edge detection for better accuracy
- Add option to view measurements in the center of the screen
- Improve compatibility with older devices
- Add option to disable review prompts
uFTP Server2
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Ruler
No in-app purchases
uFTP Server2
No in-app purchases
Questions
Is Ruler free?
Is uFTP Server2 free?
Do Ruler or uFTP Server2 have ads?
Which is updated more often, Ruler or uFTP Server2?
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