TDDA vs Testr
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TDDA
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The drug detection app (TDDA) provides a useful practical tool to be utilised in the workplace. It includes useful drug information for people who have attended specialised drug awareness training with TDDA. Developed by The Drug Detection Agency (TDDA), a specialist drug testing company working in both New Zealand and Australia, this app provides general drug information and also has a reasonable cause checklist used to help determine if a person may be on drugs based on recorded relevant considerations or observations. In order to use this app, you must login with a provided username and password, given when your training is finished. Key features of the app: • What is this drug? • Drug effects • Drug paraphernalia • Reasonable cause checklist
Testr
Order certified drug testing conveniently at your location. Track your collector's arrival in real-time and receive your results securely. Suitable for individuals and employers needing rapid or lab-confirmed testing.
- On-demand certified drug testing
- Real-time collector tracking
- Rapid at-home tests
- Lab-confirmed results
- Private digital records
- Employer dashboard
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Drug testing, delivered. Testr brings certified drug testing to your door. Order a test in seconds, watch your collector arrive live on the map - just like your ride - and get your results released straight to your private records. IN AS LITTLE AS 3 HOURS Order now and a certified collector can be at your door in as little as 3 hours, anywhere in the Los Angeles area. TWO TESTS, ONE TAP • At-Home Rapid Test - 14-panel instant-read results on the spot. • Rapid Test with Laboratory Confirmation - rapid read on site, then the specimen is sealed and sent to a CAP-accredited laboratory for quantitative LC-MS/MS confirmation, with results in about 72 hours. Every confirmation includes the laboratory's complete 81-substance menu. TRACK EVERY STEP See your collector assigned, en route, and arriving in real time, with a live ETA and a full chain-of-custody code on every order. Verify your collector at the door with a 4-digit PIN before collection begins. YOUR RECORDS, PRIVATE Results are released directly to your account - and only yours. View the full 14-panel breakdown, download a certified PDF record when YOU choose, and keep your complete testing history in one place. BOOK FROM ANYWHERE Prefer the web? Book and track at testrla.com with the same account - everything stays in sync between the app and the site. Now serving the Los Angeles area - more locations coming soon.
Screenshots
Verdict
The clearest difference is update cadence: Testr at every 3 days against TDDA's monthly. TDDA's advantage is iOS requirement (13.4 vs 18.0). 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.
TDDA ships an update monthly, Testr every 3 days. The most recent releases landed on September 28, 2026 and October 8, 2026 respectively.
| Parameter | TDDA | Testr |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (5 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 5 — better |
| Update frequency | Monthly | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 13.4 — better | 18.0 |
| Further details — not scored | ||
| Size | 30 MB | 17 MB |
| Age rating | 17+ | 12+ |
| Developer | INTERNATIONAL DRUG DETECTION AGENCY LIMITED | Daniel Rimer |
In-app purchases
TDDA
No in-app purchases
Testr
No in-app purchases







