Citrus ID vs NCI Ethics
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Citrus ID
This application helps identify citrus pests and diseases found on various plant species. It focuses on the citrus family (Rutaceae) and is designed for those working in citrus orchards, gardens, or conducting pest surveys.
- Citrus pest and disease identification
- Focus on Rutaceae family
- Aids orchard and garden surveys
- Identifies to cultivar group level
- Includes original illustrations and photography
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Citrus pests and diseases may be found on a number of plant species in various plant families. The Citrus ID Key is primarily intended to help people working or conducting pest surveys in citrus orchards, variety collections, and home gardens, so its focus is limited exclusively to the citrus family (Rutaceae). Although eight genera of Rutaceae are native to the continental United States (Amyris, Choisya, Cneoridium, Esenbeckia, Helietta, Ptelea, Thamnosma, and Zanthoxylum), most of these are unlikely to be encountered in our target locations and can be keyed using regional guides. The cultivars and taxa of citrus and relatives that have been introduced and released for cultivation are the most likely to be encountered in cultivated settings, so the Citrus ID Key concentrates on these taxa. Cultivars of citrus and its relatives are released in the United States through state agencies and to a lesser extent the USDA-ARS National Clonal Germplasm Repository for Citrus & Dates. Our target list of entities was synthesized from the cultivar lists provided by the California Citrus Clonal Protection Program, the Florida Citrus Arboretum, the Florida Chiefland Budwood Distribution Center, the Florida Bureau of Citrus Budwood Registration, and the Texas Budwood Certification Program. Arizona no longer certifies budwood, instead relying on the California program. The resulting target list includes over 500 entities of citrus and relatives cultivated in the United States. Field identification to the level of cultivar remains impossible in most cases. This is partially due to the complicated reticulate breeding history of citrus, but also, selection has generally focused on characters such as taste, disease and stress resistance, and fruiting phenology rather than on characters of ornamental (and thus morphological) value. This key facilitates identification to at least the cultivar group level within citrus (e.g., sweet oranges, sour oranges, etc.), if not beyond for select cultivars. Original illustrations and photography: Unless specifically indicated otherwise, the source for plant images included in Citrus ID Key should be cited as "Herbarium (NCSC)." NCSC is the official abbreviation for the North Carolina State University Herbarium. Any commercial use is prohibited without express written permission. Requests may be addressed to: Herbarium, Department of Plant Biology, North Carolina State University, Raleigh, NC 27695-7612. Original source for Lucid Mobile Key: Saville, A.C., A. Krings, T. Kahn, M.D. Trice, and A.J. Redford. 2011. Citrus ID, Edition 2. USDA APHIS PPQ ITP, Fort Collins and North Carolina State University. http://idtools.org/id/citrus/citrusid/ Key authors: Amanda Saville, Alexander Krings, Tracy Kahn, Matthew Trice, and Amanda Redford
NCI Ethics
This app helps National Cancer Institute personnel understand federal ethics laws and policies. It provides access to news, training, FAQs, and guidance on topics like conflicts of interest, official duties, travel, and gifts.
- Federal ethics law and policy understanding
- Conflict of interest guidance
- Official duties information
- Travel and gift regulations
- Access to news and FAQs
- Training resources
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The NCI Ethics app is intended to help personnel of the National Cancer Institute (NCI) understand Federal ethics laws and policies – from conflicts of interest to official duties to travel and gifts – and guide them in fulfilling their ethics obligations. Users have access to news, PDFs, contact and training information, FAQS, and much more.
Screenshots
Verdict
The clearest difference is rating: NCI Ethics at 5.0 against Citrus ID's 2.0. NCI Ethics also leads on update cadence (every 3 months vs every 10 months) and ratings volume (4 vs 1). Citrus ID's advantage is iOS requirement (10.0 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.
NCI Ethics holds the better App Store score, 5.0 against 2.0. Both are backed by a comparable volume of ratings — 1 and 4 respectively.
Citrus ID ships an update every 10 months, NCI Ethics every 3 months. The most recent releases landed on November 1, 2026 and November 4, 2026 respectively.
| Parameter | Citrus ID | NCI Ethics |
|---|---|---|
| Price | Free | Free |
| Rating | 2.0 (1 ratings) | 5.0 (4 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 1 | 4 — better |
| Update frequency | Every 10 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 10.0 — better | 18.6 |
| Further details — not scored | ||
| Size | 341 MB | 58 MB |
| Age rating | 4+ | 4+ |
| Developer | United States Department of Agriculture-APHIS | National Cancer Institute |
Customer experience
Citrus ID
NCI Ethics
In-app purchases
Citrus ID
No in-app purchases
NCI Ethics
No in-app purchases








