AsTagFinder vs Tags CrystalSound
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
AsTagFinder
Locate RAIN UHF RFID tags with precision using this application and a compatible AsReader device. The app provides visual and auditory cues to pinpoint tag locations, displaying horizontal and vertical positions, and measuring relative distance.
- RAIN UHF RFID tag location
- Visual position display (top and side views)
- Auditory tag finding cues
- Relative distance measurement
- TagList screen for selection
Read full descriptionHide full description
By using this app and an AsReader device, you can find the position of RAIN UHF RFID tags with high accuracy. ============================ How to search for a tag: 1. Select the RFID tag you want to find on the TagList screen 2. The position of the RFID tag can be determined by looking at the display on the search screen or by listening to the sounds made by the app. Top view represents horizontal position information. Side view represents vertical position information. 3. You can find the relative distance to the RFID tag on the Measure screen.
Tags CrystalSound
Read full descriptionHide full description
Tags CrystalSound is an application for monitoring CrystalSound bluetooth tags. You can scan your tags and find out the tag's status and battery level.
Screenshots
Verdict
The clearest difference is update cadence: AsTagFinder at every 3 months against Tags CrystalSound's every 21 months. Tags CrystalSound's advantage is iOS requirement (13.0 vs 15.6). 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.
AsTagFinder ships an update every 3 months, Tags CrystalSound every 21 months. The most recent releases landed on November 3, 2026 and October 24, 2026 respectively.
| Parameter | AsTagFinder | Tags CrystalSound |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 3 months — better | Every 21 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.6 | 13.0 — better |
| Further details — not scored | ||
| Size | 28 MB | 18 MB |
| Age rating | 4+ | 4+ |
| Developer | Asterisk Corporation | Crystal Sound S.R.L. |
In-app purchases
AsTagFinder
No in-app purchases
Tags CrystalSound
No in-app purchases
Questions
Is AsTagFinder free?
Is Tags CrystalSound free?
Do AsTagFinder or Tags CrystalSound have ads?
Which is updated more often, AsTagFinder or Tags CrystalSound?
Other comparisons
