Microtask crowd · Gamified labeling contests
DiagnosUs
DiagnosUs, built by Boston-based Centaur Labs (now centaur.ai), turns medical image, ECG, and clinical-text labeling into daily accuracy contests that medical students, nurses, and physicians compete in for cash prizes, withdrawn by PayPal or bank transfer. It is actively maintained (App Store version updated 20 Oct 2026, 4.8 stars) and anyone can play, but its contest terms say prizes are meant for legal residents of the US, Puerto Rico and DC aged 18 or over, and players elsewhere may have prizes withheld. Prizes are small and performance-based rather than a fixed hourly or per-label rate. A referral program exists, but its terms restrict links to personal, non-commercial use with a $20 combined referrer cap, so it is not a link a public directory can publish.
Third-party reports
Is DiagnosUs legit?
Centaur Labs (Centaur Diagnostics, Inc.), Boston, raised a $15M Series A led by Matrix Partners; its site, now centaur.ai, says customers can select from 100,000+ subject matter experts (read 29 Oct 2026). The DiagnosUs app holds 4.8 stars from 1,014 Apple App Store ratings and was last updated on 20 Oct 2026 (App Store, read 2 Nov 2026). Worker sentiment is broadly positive as a legitimate coffee-money side activity, with recurring complaints about withdrawal friction, identity checks and case-scoring disputes. It pays Contest prizes (small, performance-based) (third-party reports).
Joined through its own application (it publishes no job postings)
Prizes are withdrawn in the app by PayPal ($10 minimum) or bank transfer ($30 minimum), per its support page (read 2 Nov 2026); winners may be asked for an address and tax ID.
4.8 on the Apple App Store (1,014 ratings, read 2 Nov 2026); developer Centaur Diagnostics
Anyone can play (iOS and Android; the app is not offered in every country's app store, its support page says), but prizes are meant for legal residents of the US, Puerto Rico and DC aged 18 or over: its Contest Terms say players elsewhere may take part, yet prizes are not guaranteed to them and may be withheld (read 2 Nov 2026). Centaur's own documentation says roughly half of its users are US-based.
Honest catches
- Pay here is third-party reports, not measured live from a job feed, so treat it as a benchmark rather than a guaranteed rate.
What DiagnosUs pays
Third-party reports · as of 2026-11-02Researched rate card, third-party reports, as of 2026-11-02
DiagnosUs states no rate: its site says you 'win cash prizes when you play' and its App Store listing says the prizes are subsidized by the research partners and customers whose datasets are labeled (both read 29 Oct 2026, the site again 2 Nov 2026). Its support page (diagnosus.com/support, read 2 Nov 2026) sets the withdrawal minimums: $10 in prizes to withdraw by PayPal, $30 by bank transfer. Its Contest Terms (effective 22 Apr 2024, read 2 Nov 2026) say contests are intended only for legal residents of the US, Puerto Rico and DC aged 18+, and that players outside them may take part but prizes are not guaranteed and may be withheld; its Terms of Service (effective 29 Aug 2026) say winners may have to give an address and tax ID. What players report, in dated US App Store reviews (read 29 Oct 2026): on 21 Dec 2025 one says they were 'able to cash out twice with $40.00 to $140.00'; on 25 Dec 2025 another had 50 cents after days of trying and could not get through identity checks to withdraw; on 9 Apr 2021 one had won about $70 in a month. The undated personal-finance blog figures this card carried before (up to about $50 in a strong day, $200 in a good week) were not found again and are dropped. All figures are players' own reports, not platform-stated.
| Role | Kind of work | Researched pay |
|---|---|---|
| Medical image labeling contests | Data Annotation | Cash prizes (accuracy-based) |
| ECG and waveform annotation | Data Annotation | Contest prizes |
| Clinical notes and pathology review | Domain Experts | Contest prizes |
Live DiagnosUs roles
DiagnosUs does not publish a public job feed.
You apply on DiagnosUs directly, then get matched to work from your account.
Join DiagnosUs (opens the job details)Some links on AITraining.jobs are referral links. If you sign up through one, AITraining.jobs may earn a commission at no extra cost to you. It never changes what a platform pays you.
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The work DiagnosUs hires for
Each links to what the work involves, who hires for it, and what it pays across the market.
New to this? Start with the learning guides or compare pay across every platform.
From the forum
Ask the people doing DiagnosUs work what only they can tell you.
Frequently asked questions
Is DiagnosUs legit?
Centaur Labs (Centaur Diagnostics, Inc.), Boston, raised a $15M Series A led by Matrix Partners; its site, now centaur.ai, says customers can select from 100,000+ subject matter experts (read 29 Oct 2026). The DiagnosUs app holds 4.8 stars from 1,014 Apple App Store ratings and was last updated on 20 Oct 2026 (App Store, read 2 Nov 2026). Worker sentiment is broadly positive as a legitimate coffee-money side activity, with recurring complaints about withdrawal friction, identity checks and case-scoring disputes.
Does DiagnosUs pay?
Yes. Centaur Labs (Centaur Diagnostics, Inc.), Boston, raised a $15M Series A led by Matrix Partners; its site, now centaur.ai, says customers can select from 100,000+ subject matter experts (read 29 Oct 2026). The DiagnosUs app holds 4.8 stars from 1,014 Apple App Store ratings and was last updated on 20 Oct 2026 (App Store, read 2 Nov 2026). Worker sentiment is broadly positive as a legitimate coffee-money side activity, with recurring complaints about withdrawal friction, identity checks and case-scoring disputes. Payouts: Prizes are withdrawn in the app by PayPal ($10 minimum) or bank transfer ($30 minimum), per its support page (read 2 Nov 2026); winners may be asked for an address and tax ID.
How much does DiagnosUs pay?
Contest prizes (small, performance-based). DiagnosUs states no rate: its site says you 'win cash prizes when you play' and its App Store listing says the prizes are subsidized by the research partners and customers whose datasets are labeled (both read 29 Oct 2026, the site again 2 Nov 2026). Its support page (diagnosus.com/support, read 2 Nov 2026) sets the withdrawal minimums: $10 in prizes to withdraw by PayPal, $30 by bank transfer. Its Contest Terms (effective 22 Apr 2024, read 2 Nov 2026) say contests are intended only for legal residents of the US, Puerto Rico and DC aged 18+, and that players outside them may take part but prizes are not guaranteed and may be withheld; its Terms of Service (effective 29 Aug 2026) say winners may have to give an address and tax ID. What players report, in dated US App Store reviews (read 29 Oct 2026): on 21 Dec 2025 one says they were 'able to cash out twice with $40.00 to $140.00'; on 25 Dec 2025 another had 50 cents after days of trying and could not get through identity checks to withdraw; on 9 Apr 2021 one had won about $70 in a month. The undated personal-finance blog figures this card carried before (up to about $50 in a strong day, $200 in a good week) were not found again and are dropped. All figures are players' own reports, not platform-stated.
Is DiagnosUs worth it?
DiagnosUs pays Contest prizes (small, performance-based) (third-party reports). It suits flexible microtask income rather than a dependable hourly wage. Worker sentiment: 4.8 on the Apple App Store (1,014 ratings, read 2 Nov 2026); developer Centaur Diagnostics.
How does DiagnosUs pay out?
Prizes are withdrawn in the app by PayPal ($10 minimum) or bank transfer ($30 minimum), per its support page (read 2 Nov 2026); winners may be asked for an address and tax ID.
Where can you work for DiagnosUs?
Anyone can play (iOS and Android; the app is not offered in every country's app store, its support page says), but prizes are meant for legal residents of the US, Puerto Rico and DC aged 18 or over: its Contest Terms say players elsewhere may take part, yet prizes are not guaranteed to them and may be withheld (read 2 Nov 2026). Centaur's own documentation says roughly half of its users are US-based.
Compare DiagnosUs with
The original microtask crowd: earn per HIT at requester-set rates.
~$2–$3/hr effective (2018 study); closedThird-party reports
Crypto data-labeling crowd that closed its paid task app in March 2026 for expert validation (Proof of Quality).
Task app closed Mar 2026; validator pay set per project, none postedPlatform-stated
Project-based AI training platform (prompts, coding challenges, evals) that is closing: it wound down its annotation work in October 2026.
Closing (Oct 2026); paid $25/hr+ while openPlatform-stated
A large global contributor crowd, strong on multilingual speech and evaluation.
$2.40–$100/hr; CrowdGen experts up to $450/hrPlatform-statedOrdered by what applying is worth, lifted by a referral boost for the platforms that pay us a referral fee; it never changes what a platform pays you.
Short of experts at DiagnosUs? We find the experts (you contract them yourself) or we run the project (we deliver the expert work).