Federal Noxious Weeds Key vs USDA Ethics
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Federal Noxious Weeds Key
This app provides interactive keys for identifying federal noxious weed angiosperm disseminules. It's designed for officials at U.S. ports and useful for seed professionals and anyone interested in noxious weed identification.
- Interactive identification keys
- Focus on angiosperm disseminules
- Designed for U.S. port officials
- Useful for seed professionals
- Covers grasses, legumes, and other families
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Officials in the United States Department of Agriculture (USDA) have determined that certain species not native to the U.S. are at risk of becoming invasive should they enter this country. As part of its effort to prevent the introduction of invasive or potentially invasive weeds, the USDA maintains an official list of "federal noxious weeds" (FNW) (7 CFR 360.200 and 361.6). Many taxa on this list are currently serious weeds elsewhere in the world, and about two-thirds of the taxa are currently found in the U.S. Most of the FNW taxa are angiosperms, but a few are ferns and one is a green alga. NOTE that the ferns and alga are not included in this app. Fruits and seeds are the plant disseminules most responsible for the spread of weeds to new regions. Federal Noxious Weed Disseminules of the U.S. Keys was developed to enable accurate identification of FNW angiosperm disseminules. The three keys (Grasses=Poaceae; Legumes=Fabaceae; and Other Angiosperm Plant Families) were designed to be used by officials at U.S. ports responsible for identification of plant pests. It may also be a useful resource for seed professionals and anyone else with an interest in, or a need to know about, noxious weed disseminules. Thirty-one families are currently represented on the FNW list as of 2013. Most of the taxa are individual species, but two are species complexes, Rubus fruticosus L. agg. and Salvinia auriculata complex (not included in the app key since an aquatic ferm), and one is an infraspecific taxon (Setaria pumila (Poir.) Roem. & Schult. ssp. pallidefusca (Schumach) B. K. Simon). Note that fact sheets for the FNW species of six genera Aeginetia, Alectra, Cuscuta, Moraea, Orobanche, Striga have been treated together in their own "genus-level" fact sheets. The three interactive family keys include only those FNW taxa that produce seed and fruit disseminules (i.e., angiosperms). Eight taxa are not included in the interactive keys either because they lack angiosperm reproduction altogether or they produce seed only rarely. One group lacking fruits and seeds are the ferns, which reproduce via spores as well as by vegetative means. Reproduction via vegetative disseminules is the primary means of dispersal for some non-ferns (three angiosperms and an alga) as well. The eight taxa not in the keys are the terrestial ferns Lygodium flexuosum (L.) Sw. and Lygodium microphyllum (Cav.) R. Br., the aquatic ferns Azolla pinnata R.Br. and the Salvinia auriculata complex, the aquatic angiosperms Hydrilla verticillata (L.f.) Royle and Lagarosiphon major (Ridley) Moss, the sterile angiosperm hybrid Opuntia aurantiaca Lindl., and the alga Caulerpa taxifolia (Vahl) Agardh. All photographic images were produced by the authors except where acknowledged in image captions. See FNW tool for proper guidelines for use and citation of images. The majority of original illustrations were drawn by Lesley Randall. The remainder were drawn by Ingrid Hogle and Julia Scher. Drawings by Lynda E. Chandler are from Gunn and Ritchie (1988). Drawings by Regina O. Hughes are from Terrell and Peterson (1993) and Reed (1977). Key authors: Julia Scher and Deena Walters This key is part of a complete FNW tool: http://itp.lucidcentral.org/id/fnw/ Lucid Mobile key developed by USDA APHIS ITP
USDA Ethics
This app offers federal employees, particularly USDA staff, concise summaries of ethics rules and Hatch Act regulations. It features an organized Ethics Library, a video library with ten short educational videos, and a Resources section to connect with ethics advisors.
- Federal ethics rules summaries
- Hatch Act limitations
- Organized Ethics Library
- Ethics Video Library
- Contact Ethics advisors
- Resource section
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This interactive mobile app provides USDA employees – and other Federal government employees – with short easy-to-read summaries of the Federal ethics rules and the Hatch Act's limitations on political activity. This information is available, at your fingertips, in a well-organized Ethics Library. The app also includes a series of ten short videos in a comprehensive Ethics Video Library, so that employees can quickly become more aware about these important rules, anytime, whether in the office, off-site, or on official travel. The app contains a handy Resources sections for USDA employees to be able to readily contact an Ethics advisor at the USDA Office of Ethics. IMPORTANT NOTICE: Since ethics determinations are often fact-specific, employees are strongly encouraged to contact their respective agency Ethics Advisors with any ethics questions. The app is a useful tool to raise awareness, but is not a substitute for the individual advice provided by an experienced Ethics Advisor.
Screenshots
Verdict
The clearest difference is review sentiment: USDA Ethics at 100% against Federal Noxious Weeds Key's 0%. USDA Ethics also leads on rating (5.0 vs 1.0) and update cadence (every 4 months vs every 10 months). Federal Noxious Weeds Key's advantage is iOS requirement (13.1 vs 18.6). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
USDA Ethics holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 4 respectively. Written reviews point the same way: 0% of Federal Noxious Weeds Key's written reviews are positive against 100% of USDA Ethics's.
Federal Noxious Weeds Key ships an update every 10 months, USDA Ethics every 4 months. The most recent releases landed on October 24, 2026 and October 14, 2026 respectively.
| Parameter | Federal Noxious Weeds Key | USDA Ethics |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (1 ratings) | 5.0 (4 ratings) — better |
| Positive reviews | 0.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 1 | 4 — better |
| Update frequency | Every 10 months | Every 4 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.1 — better | 18.6 |
| Further details — not scored | ||
| Size | 48 MB | 67 MB |
| Age rating | 4+ | 4+ |
| Developer | United States Department of Agriculture-APHIS | United States Department of Agriculture |
Customer experience
Federal Noxious Weeds Key
USDA Ethics
In-app purchases
Federal Noxious Weeds Key
No in-app purchases
USDA Ethics
No in-app purchases





