Iddera vs Hydra OS
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Iddera
Connect with licensed primary care doctors instantly, 24/7, for health questions, prescriptions, and referrals. Receive personalized wellness plans and follow-ups to manage your health effectively.
- Instant doctor messaging 24/7
- Prescriptions and medical referrals
- Daily health and wellness actions
- Treatment follow-ups
- Personalized meal and fitness plans
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Iddera: Healthcare for Humans. Free instant messaging with real doctors 24.7 Iddera is a licensed full-service primary care clinic; designed around your life. Dedicated doctors to hear you, answer your questions, help you make sense of a diagnosis, research solutions with you, and direct your overall care; in sickness and in health. - Instant answers to health questions, 24.7 - Prescriptions, Sick Note, and Medical Referral Letters - Daily health & wellness actions; and Public Health Alerts - Treatment follow-ups, medication reviews and health updates - Personalized meal plans, fitness plans and therapy sessions (T&Cs apply)
Hydra OS
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Hydra OS provides personalised high-quality health care necessary to take control of your health with a plethora of patient resources from the comfort of a smartphone. The app also enhances your well-being by utilising cutting-edge technology and modern medicine, designed for convenience. NOTE: Remember to seek a doctor’s advice before using this app or making any medical decisions.
Screenshots
Verdict
The clearest difference is update cadence: Iddera at every 2 weeks against Hydra OS's every 2 months. Hydra OS's advantage is iOS requirement (12.0 vs 15.0). 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.
Iddera ships an update every 2 weeks, Hydra OS every 2 months. The most recent releases landed on October 5, 2026 and October 19, 2026 respectively.
| Parameter | Iddera | Hydra OS |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (8 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 8 — better | — |
| Update frequency | Every 2 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 152 MB | 52 MB |
| Age rating | 17+ | 4+ |
| Developer | IDDERA LIFE LTD | Afrihealth LTD |
In-app purchases
Iddera
No in-app purchases
Hydra OS
No in-app purchases
